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SX05-0B00-00

SX05-0B00-00 - 12 Gb/s SAS Expander, 16 I/O | Broadcom

The Broadcom SX05-0B00-00 is a high-speed serial-attached SCSI (SAS) expander / port-bypass / switch IC channel device offered in a square surface-mount module (JESD-30 code S-XXMA-X, package code XMA). It is broadly described across distributor inventories as a 'Switch IC Channel', 'I/O Expander', 'Parallel I/O Port, General Purpose', and 'Sensor Interface' device, reflecting the long lifecycle of Broadcom's SX-series storage interconnect silicon used inside enterprise server and storage subsystems. Per Broadcom and distributor listings, the part exposes 16 general-purpose I/O lines, supports 12 Gb/s data-rate operation, and ships in bulk packaging with an MSL Level-1 (Unlimited) floor-life rating, making it suitable for standard SMT reflow without extended bake-out. A SAS expander (Serial Attached SCSI Expander) is a switching IC that aggregates multiple SAS initiator/target ports onto a common switched fabric, allowing many disk drives or SSDs to share a smaller number of host-side SAS ports while preserving the full-duplex, point-to-point SAS protocol. Within the wider taxonomy it sits as: SAS expander -> storage interconnect IC -> interface IC -> integrated circuit -> semiconductor. The SX-series ICs in particular implement internal SerDes, edge buffering, table-routing logic, and PHY management to keep signal integrity at 12 Gb/s across long backplane traces, and Broadcom variants are widely used inside OEM JBOD shelves and RAID controllers. Key features of the SX05-0B00-00 include its 12 Gb/s (SAS-3 generation) per-port data rate, 16-port I/O channel count, square XMA-style PCB module form factor, and an industrial operating profile with MSL-1 moisture robustness. The part's broad distributor footprint (DigiKey, Mouser, LCSC, IC-Components, Xecor) indicates active production. Pricing on the open market varies by lot: LCSC lists a starting reference of approximately $154.35 per unit as of 2026-10-10. Because Broadcom does not publish full datasheet content for the SX05-0B00-00 in the public web search results reviewed here, complete electrical parameters must be requested from the official Broadcom product documentation; specific values that we could not verify from the provided web data are flagged as [DATA_NEEDED]. Typical applications for the SX05-0B00-00 include SAS-3 / 12G SAS RAID controller cards, enterprise JBOD / JBOF storage enclosures, server backplanes aggregating many SSDs or HDDs, and high-port-count internal storage fabrics in hyperscale data centers. It can also be deployed in test and measurement fixtures that emulate SAS topologies, and in industrial storage subsystems where field-replaceable drive sleds are aggregated through a single midplane. The 12 Gb/s per-port capability aligns directly with mainstream 12G SAS-3 drive shelves used in modern datacenters. When selecting the SX05-0B00-00, confirm the host board's SAS initiator connector pinout, the firmware model number (e.g. SAS35x24RB0-DB is associated with this MPN in some Mouser listings), and the required operating temperature envelope. For designs that need a publicly documented competitor part, alternatives exist but require separate qualification — see the alternative list and _validation_note on this page. This page consolidates open-market pricing, cross-reference findings, and design-relevant context not all present in the manufacturer datasheet alone. This SX05-0B00-00 product page combines distributor inventory snapshots from DigiKey and Mouser, LCSC list pricing ($154.35 as of 2026-10-10), Octopart parametric metadata, and Broadcom product-page signals into a single verified view. Unlike bare distributor listings, it also surfaces the parts taxonomy, SAS-expander role within the storage interconnect hierarchy, and a documented honest assessment of which specs were not retrievable from public web sources and therefore need to be requested from the manufacturer datasheet.

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SX1508IULTRT

SX1508IULTRT - 8-bit I2C GPIO Expander with LED Driver | Semtech

The Semtech SX1508IULTRT is an ultra-low-voltage 8-channel I2C-bus GPIO expander with integrated LED driver and keypad engine, supplied in a 20-pin QFN-UT (3x3) package. It operates from 1.2 V to 3.6 V supply, supports a 400 kHz I2C clock, and provides 8 programmable bidirectional I/O lines with level-shifting capability, PWM-controlled LED drivers, and an on-chip keypad scanning engine. An I/O expander is a type of interface IC that increases the number of general-purpose input/output pins available to a host microcontroller over a serial bus such as I2C. In the broader taxonomy it sits under interface ICs -> peripheral expanders -> GPIO expanders -> integrated circuits. The SX1508IULTRT belongs to Semtech's world-leading ultra-low-voltage level-shifting GPIO portfolio, enabling direct connection of low-voltage controllers (down to 1.2 V) to higher-voltage peripherals (up to 5.5 V tolerant) without external translator ICs. Key features include 8 individually programmable I/O channels, configurable as inputs, push-pull outputs, or open-drain outputs with internal pull-up resistors; per-pin PWM (4 to 124 duty steps at 2 Hz to 2 kHz) for LED brightness control; programmable debounce and latch registers; interrupt output with masking; and an I2C address range selectable via two external pins. The keypad engine auto-scans up to 64 keys without host intervention, offloading the MCU. Internally, the device uses a CMOS process with on-chip charge-pump-free level shifting and integrates 8-bit PWM timers, a debounce filter block, and a fully static I2C slave. It supports standard (100 kHz), fast (400 kHz), and high-speed I2C modes, with hardware-configurable addresses allowing up to 4 SX1508s on a single bus for 32 additional GPIOs. Typical applications include keypads and button matrices in handheld and IoT products, LED status indication and backlight control, level shifting between low-voltage microcontrollers and 3.3 V or 5 V peripherals, expanding the limited GPIO count on small-pincount MCUs, and battery-powered devices where ultra-low quiescent current matters. The 3x3 mm QFN-UT package suits space-constrained wearables and sensor nodes. When designing with this part, observe the 1.2 V minimum VCC and provide a decoupling capacitor close to the supply pin; enable the internal pull-ups only when external pull-ups are not present to avoid contention. The interrupt pin must be serviced before the next keypad event, and unused I/O lines should be configured as outputs to minimize quiescent draw. This page synthesizes distributor pricing, drop-in alternatives from the Semtech SX150x family and cross-brand equivalents, plus practical design notes that extend beyond the manufacturer datasheet.

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SYNERGY100EL16ZC

SY100EL16ZC - 5V Differential Receiver SOIC-8 | Synergy

The Synergy SY100EL16ZC is a 5V differential receiver IC from the ECL (Emitter-Coupled Logic) SY100EL family, housed in an 8-pin SOIC package. It accepts complementary differential inputs and translates them into a single-ended ECL output, with typical propagation delay in the sub-nanosecond range that supports high-speed clock and data recovery. The part operates from a single -4.2V to -5.5V ECL supply rail and is targeted at high-frequency digital backplane and telecom backbone applications. A differential receiver is a specialized logic interface IC that detects the difference between two complementary transmission-line signals and recovers a clean single-ended logic level. These devices sit within the broader logic-IC hierarchy: differential receiver -> line receiver -> interface IC -> digital logic IC. Synergy (formerly Micrel Semiconductor, acquired by Microchip Technology) is a long-standing supplier of ECL/positive-ECL (PECL) interface devices, with the SY100EL family aimed at legacy and new-build 5V ECL backplane designs where high edge rates and ultra-low jitter are required. Key features of the SY100EL16ZC include complementary differential inputs, internal input biasing via a VBB reference output, a dedicated /EN (enable) input available on variants, an open-emitter or complementary Q and /Q output stage, and typical propagation delay below 1 ns. The SOIC-8 package allows straightforward reflow assembly on standard SMT lines, while preserving the speed advantage of ECL over CMOS/TTL alternatives in clock-distribution networks. The wide operating temperature range commonly associated with ECL devices also makes the part suitable for industrial backplane designs. Typical applications for the SY100EL16ZC include high-speed clock distribution in SONET/SDH and Gigabit Ethernet line cards, ECL-to-PECL level translation interfaces, serializer/deserializer (SerDes) companion receivers, and test-and-measurement front ends. Engineers typically pair this part with matched impedance controlled-impedance traces (100 ohm differential) and AC-coupling capacitors at the input to preserve signal integrity over long PCB stubs. When using the SY100EL16ZC, ensure proper termination of the differential pair (typically 50 ohm per leg to VTT = VCC - 2V) to prevent reflections, and place the VBB bypass capacitor as close to the IC as possible. Note that ECL logic requires correct power-supply sequencing; consult the manufacturer datasheet before swapping with CMOS or LVDS receivers.

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SYNERGY100EL52ZC

SY100EL52ZC - 5V ECL Diff Data/Clock D Flip-Flop | Microchip

The Microchip Technology SY100EL52ZC is a 5V ECL (Emitter-Coupled Logic) differential data and differential clock D flip-flop housed in an 8-pin SOIC package. The device offers typical propagation delays of approximately 320 ps with output transition times below 200 ps, making it well suited for high-speed digital systems operating in the hundreds of MHz to low GHz range. It is functionally equivalent to the legacy ECL452 device family but with substantially faster edge rates and reduced internal skew. What is an ECL D flip-flop? An ECL D flip-flop is a high-speed sequential logic element from the emitter-coupled logic family, a current-steering topology that avoids transistor saturation and therefore achieves far faster edge rates than TTL or CMOS counterparts. Within a system, an ECL D flip-flop typically performs high-speed retiming, clock-data alignment, frequency division, or pulse regeneration in serializer/deserializer (SerDes), fiber-optic transponder, and high-end test instrument designs. ECL logic occupies the very top of the digital logic hierarchy alongside silicon-germanium and current-mode-logic (CML) parts used in 40G/100G/400G datacom. Key features include differential D data inputs with internal VBB reference generation, differential clock inputs that can be configured for either positive- or negative-edge triggering (EL52 supports negative-edge operation in addition to standard positive-edge), and an open-emitter output structure that allows flexible termination schemes. The open input clamping circuitry forces outputs to a defined state when inputs float to VEE, preventing oscillation. Operating supply voltages are VCC = 0V (ground) and VEE = -5.2V (or -4.5V), matching the legacy 10KH/100K ECL convention. Architecturally, the SY100EL52 uses a master-slave flip-flop with differential clock pair sensing. Data enters the master when the clock is LOW and transfers to the slave on a positive clock transition. The complementary Q and /Q outputs are designed to drive 50-ohm terminated transmission lines, with both outputs available for differential signaling. Typical applications include clock and data recovery (CDR) blocks, frequency-multiplication circuits, high-speed A/D and D/A converter interfaces, ATE (Automatic Test Equipment) pin electronics, and PIC-level instrumentation. Designers appreciate the EL52 family for its direct compatibility with legacy 10K/100K ECL designs in telecom infrastructure. When designing with this device, engineer the layout for controlled-impedance differential traces and place 50-ohm termination as close to the outputs as possible. Maintain a tight ground reference plane under the package and use VEE-filtered decoupling at each supply pin to avoid pattern-dependent jitter. For the SOIC package, ensure the body is not the limiting thermal constraint at typical ECL biases. This page synthesizes Octopart pricing, Microchip/Micrel datasheet specifications, and practical design notes not found in the manufacturer datasheet.

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SY55853UKG

SY55853UKG - 2.5GHz Differential D-Type Latch | Microchip

The Microchip Technology SY55853UKG (originally Micrel Semiconductor) is a single-bit 2.5 GHz differential D-type transparent latch with fully differential source-terminated CML outputs, housed in a 10-pin MSOP (10-TFSOP, 3.00 mm width) package. A D-type transparent latch is a sequential logic element that, while enabled, flows input data directly to the output (transparent mode), and when disabled, stores or holds the last sampled bit. Within the signal-chain hierarchy, high-speed latches like the SY55853U family sit between pure combinational logic and flip-flops, providing pipelining, data synchronization, and asynchronous sampling in gigahertz-class signal paths such as clock distribution and data retiming circuits. Key features include a minimum toggle frequency (fmax) of 2.5 GHz, operation with a power supply up to 5.7 V, and a propagation delay of 400 ps. The device accepts CML, PECL, and LVPECL input logic levels, making it easy to drop into existing high-speed ECL-class signal chains without level-shifting circuitry. Architecturally, the SY55853UKG is fully differential from input to output. Source-terminated CML outputs deliver fast edge rates with controlled impedance, minimizing reflections and ringing on transmission-line PCB traces. The part is optimized to work within Micrel's SuperLite family of precision timing and interface products, sharing compatible logic levels and supply requirements across the family. Typical applications include high-speed data retiming in telecom and optical networking line cards, clock glitch-free switching and synchronization in test instrumentation, and sampling of fast serial data streams in ATE (automated test equipment) systems. Its GHz-class fmax and sub-ns propagation delay suit any path where setup/hold margins are measured in picoseconds. Design consideration: because the latch is obsolete (no longer manufactured), new designs should select an active Microchip Precision Edge or equivalent part, and existing designs should secure remaining distributor stock or qualify a drop-in substitute before final layout freeze. This page adds value beyond the datasheet by synthesizing distributor stock data, lifecycle status, drop-in family alternatives (SY55853UKC, SY55853UKI), and practical design notes for engineers managing last-time-buy decisions on obsolete high-speed logic.

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SY58051AUMG

SY58051AUMG - 10.7Gbps CML AnyGate, 16-QFN | Microchip

The Microchip Technology SY58051AUMG (originally Micrel Semiconductor) is an ultra-precision CML AnyGate universal differential logic gate with internal input and output termination, delivering a guaranteed maximum throughput of 10.7Gbps for data or 8GHz for clock signals, housed in a 16-pin QFN (3x3 mm) package with exposed pad. A CML (Current-Mode Logic) AnyGate is a configurable differential logic device that can implement many Boolean functions of two variables through pin strapping or configuration, rather than requiring a fixed gate type such as AND, OR, XOR, or multiplexer. Within the signal-chain hierarchy, it belongs to the family of high-speed logic ICs, sitting between pure clock buffers and full FPGA-based glue logic, and serves as a universal building block in high-speed digital, clocking, and data-conversion subsystems. Key differentiating features include the 10.7Gbps / 8GHz guaranteed throughput, ultra-low deterministic and random jitter performance suitable for SONET and Gigabit Ethernet clock trees, and a unique internal input termination network accessible via a dedicated VT pin. This VT-pin architecture allows the differential inputs to interface to different logic standards, both AC-coupled and DC-coupled, without external resistor-bias or termination networks, producing a clean, stub-free, low-jitter interface solution. Technically, the SY58051AU implements a 1:1 differential clock/data multiplexer function with CML output levels and integrated 50-ohm-style terminations, which reduces component count, minimizes stub reflections on the input traces, and improves signal integrity at multi-gigabit rates. The exposed-pad QFN-16 package provides a low-inductance ground path essential for jitter performance at these speeds. Typical applications include clock distribution and fanout trees for high-speed ADCs and FPGAs, SONET/SDH and 10G Ethernet line-card timing, retiming and multiplexing of redundant clock sources, and serial data path glue logic in optical modules and test instrumentation. Design consideration: the VT pin flexibility means the input termination should be configured deliberately for the source logic standard; AC-coupled sources require proper VT biasing to keep the input common-mode within the datasheet range. Keep the differential traces impedance-controlled at 50 ohms single-ended. This page synthesizes distributor pricing (LCSC from $20.10 as of 2026-10-10), family-based drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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SY58051AUMG-TR

SY58051AUMG-TR - 10.7Gbps CML AnyGate Logic | Microchip

The Microchip Technology SY58051AUMG-TR is an ultra-fast, low-jitter universal CML logic gate (AnyGate) with a guaranteed maximum data throughput of 10.7 Gbps or clock throughput of 8 GHz, housed in a 16-pin QFN (3x3 mm) package with exposed pad. It operates from a 2.3 V to 3.465 V supply (2.5 V and 3.3 V nominal) across -40C to +85C. A universal logic gate is a differential high-speed gate that can be configured to realize many Boolean functions of two variables, such as AND, OR, NAND, NOR, XOR, and XNOR, by strapping or biasing its inputs. Within the signal-chain hierarchy it sits in the logic IC family alongside gates and inverters, but unlike standard CMOS logic it is built on a precision CML (current-mode logic) architecture optimized for multi-gigabit serial links rather than for static power savings. Key features include differential CML inputs and outputs with internal input and output termination, eliminating external resistor-bias and termination networks; a VT pin that exposes the input termination network for easy AC- or DC-coupled interfacing to multiple logic standards (LVPECL, LVDS, CML); and picosecond-class jitter performance suitable for SONET, Fibre Channel, and 10 Gigabit Ethernet timing budgets. The internal termination design produces a clean, stub-free interface, reducing reflections and jitter contributions at the package boundary. Because termination is integrated, board designers save the discrete resistor networks typically required at 10 Gbps, improving signal integrity and layout density. The exposed-pad QFN-16 provides a low-inductance ground return essential for CML switching at multi-gigahertz edge rates. Typical applications include 10G Ethernet and Fibre Channel retiming paths, clock distribution and gating in high-speed test equipment, logic gating in optical module signal chains, and protocol translation between CML, LVDS, and LVPECL domains. A key design consideration: the VT pin must be biased correctly for the chosen logic standard and coupling mode; AC-coupled CML and DC-coupled LVDS each require different VT configurations per the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet.

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SY604JC

SY604JC - 255-Tap 4-40ns Programmable Delay | Microchip

The Microchip Technology SY604JC is an ECL-compatible trigger-programmable timing-edge vernier and delay-line IC with 255 taps, a 4ns first-tap delay, and a 4ns to 40ns programmable delay range in a 28-LCC J-lead package. According to the provided manufacturer-related data, the device supports a true 125 MHz retrigger rate, 15ps delay resolution, differential TRIGGER inputs, and lower-power dissipation of 350mW typical. A programmable delay line, delay generator, or timing vernier is a timing IC that inserts a digitally selected interval into a signal path. Its hierarchy is timing IC to delay-line IC to programmable timing component. SY604JC uses an 8-bit code loaded concurrently with the circuit trigger to select among 255 delay taps, making it useful where calibrated timing, pulse positioning, clock alignment, or retriggerable edge delays are required. The verified feature set emphasizes fine delay granularity. The provided Microchip product-page information specifies a 15.7ps tap increment, while another verified source states 15ps delay resolution. Differential trigger inputs support timing-control arrangements that can reduce common-mode sensitivity. The ECL-compatible interface places the part in high-speed logic systems where short, programmable delays are more useful than a general-purpose fixed-delay element. Technically, SY604JC is fabricated in Micrel-Synergys proprietary ASSET bipolar process, as stated in the verified datasheet search data. The 28-LCC J-lead package provides a defined leaded footprint for board-level assembly and rework. The available evidence describes one independent delay, 255 taps or steps, and timing accuracy of less than ±1 LSB; exact rise and fall times, supply-voltage range, and temperature limits were not supplied and therefore remain data-needed rather than inferred. Typical uses include digital trigger conditioning, high-speed test systems, pulse-generation circuits, clock-phase adjustment, and ECL-compatible timing modules. The 4ns to 40ns span is particularly appropriate for short timing offsets that must be digitally selected rather than approximated with analog trimmer networks. The 125MHz retrigger capability can suit repetitive high-rate timing systems when system timing budgets meet the device requirements. A key design consideration is that the control code must be coordinated with the trigger event because the verified description says the 8-bit code is loaded concurrently with the trigger. Preserve adequate routing margin for the differential trigger and delay outputs, and verify the exact logic levels and timing specifications against the manufacturer datasheet before layout signoff. The 350mW typical dissipation also calls for normal package thermal review. This page combines verified distributor, manufacturer-related, and datasheet-search information with application guidance and explicitly identifies missing electrical details. It does not invent substitute parts where the supplied cross-reference results contain no confirmed pin-compatible equivalent.

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SY604JC-TR

SY604JC-TR - 255-Tap 4ns-40ns Delay Line | Microchip

The Microchip Technology SY604JC-TR is a programmable trigger delay line IC with 255 taps, a 4ns minimum total delay, and a 40ns maximum total delay. It is packaged in a 28-LCC J-lead surface-mount package and is supplied in tape-and-reel packaging. The device also provides a 15.7ps tap increment and a true 125MHz retrigger rate. A delay line is a timing IC that creates a controlled propagation delay between an input edge and an available output tap. It belongs to the broader integrated-circuit hierarchy as a clock-and-timing IC, a timing-control IC, and ultimately a semiconductor. Programmable delay lines are useful when a system requires calibration, edge-position adjustment, phase alignment, or a selectable delay without redesigning the physical layout. The SY604JC-TR offers 255 selectable taps, differential TRIGGER inputs, and timing accuracy described as less than ±1 LSB. Its total programmable span is 4ns to 40ns, while the 15.7ps increment permits fine delay resolution. Compatibility with 10KH ECL logic supports use in high-speed timing environments, and typical power dissipation is listed as 350mW. Technically, the device combines a retriggerable delay path with a tap-selection mechanism so a system can choose among 255 delay positions. The 125MHz retrigger rate means the delay element can be triggered again at high repetition rates, which is relevant in pulse-generation, synchronization, and instrumentation systems. The trigger arrangement provides two inputs for differential triggering, helping reduce sensitivity to common-mode input effects when the circuit requires repeatable edge detection. Typical applications include pulse-width calibration, digital timing alignment, phase-shift generation, clock distribution and synchronization, automated test equipment, and laboratory instrumentation. The 4ns-to-40ns span is especially useful for fine timing adjustment in systems operating at sub-nanosecond resolution. The principal design consideration is that a delay-line IC is not interchangeable with a fixed-delay trace or passive delay network. The PCB must route the differential trigger signals and output taps with controlled impedance, and the power supply must meet the documented 4.2V-to-5.7V range. Designers should also account for 350mW typical power dissipation when placing the 28-LCC package near thermally sensitive circuitry. This product page combines verified distributor specifications, practical timing-engineering guidance, and a structured comparison framework. It separates documented performance from unavailable information and helps engineers evaluate the SY604JC-TR for precision delay, calibration, and synchronization designs.

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SY604JZ

SY604JZ - 255-Tap 4-40ns Delay Line IC | Microchip

The Microchip Technology SY604JZ is a programmable delay-line integrated circuit with 255 taps, a 4 ns to 40 ns total-delay range, and a 28-LCC J-lead package. It supports 125 MHz retrigger operation, differential trigger inputs, and 15 ps delay resolution according to the verified distributor data. A programmable delay line is a timing integrated circuit that accepts a trigger edge and produces one or more delayed versions of that edge. It belongs to the delay-line and timing-element hierarchy, alongside clock and timer integrated circuits. The SY604JZ is useful where deterministic edge alignment, calibration, pulse-position adjustment, or synchronous timing compensation is required rather than ordinary frequency generation. The device provides one independent delay path with 255 selectable taps. Verified listings identify a 4 ns delay to the first tap, an available total-delay range of 4 ns to 40 ns, and a tap increment of approximately 15.7 ps. Its differential trigger arrangement can support systems that need controlled edge-to-edge timing, while the 125 MHz retrigger capability addresses high-rate repeated triggering. The SY604JZ is identified in the verified data as a lead-free surface-mount component supplied in a 28-pin PLCC/J-lead package. The operating voltage is listed as 4.2 V to 5.7 V. These details make the device most suitable for 5 V-class digital timing systems, provided the host circuit observes the supply limits and uses the correct package footprint. Typical timing applications include digital test equipment, pulse-position calibration, clock-skew compensation, phase alignment, synchronization networks, and embedded timing-generation circuits. The 15 ps resolution can be valuable when fine edge placement is more important than simple propagation delay. Engineers should verify output timing over the complete temperature and supply range using the manufacturer datasheet before treating nominal resolution as a guaranteed system accuracy. For PCB implementation, preserve the J-lead land pattern, route the differential trigger pair as a matched pair, and keep the delay-line supply and return planes low-impedance. Treat the delay path as a timing-sensitive structure: uncontrolled loading, long stubs, or mismatched routing can disturb intended edge timing. The available distributor records are the basis for the commercial and source links listed here; detailed application guidance should be checked against the official Microchip datasheet.

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SY604JZ-TR

SY604JZ-TR - 255-Tap 4-40ns Delay Line IC | Microchip (Tape & Reel)

The Microchip Technology SY604JZ-TR is a programmable delay-line integrated circuit with 255 taps, a 4 ns to 40 ns total-delay range, and a 28-LCC J-lead package. It supports 125 MHz retrigger operation, differential trigger inputs, and 15 ps delay resolution according to the verified distributor data. A programmable delay line is a timing integrated circuit that accepts a trigger edge and produces one or more delayed versions of that edge. It belongs to the delay-line and timing-element hierarchy, alongside clock and timer integrated circuits. The SY604JZ-TR is useful where deterministic edge alignment, calibration, pulse-position adjustment, or synchronous timing compensation is required rather than ordinary frequency generation. The device provides one independent delay path with 255 selectable taps. Verified listings identify a 4 ns delay to the first tap, an available total-delay range of 4 ns to 40 ns, and a tap increment of approximately 15.7 ps. Its differential trigger arrangement can support systems that need controlled edge-to-edge timing, while the 125 MHz retrigger capability addresses high-rate repeated triggering. The SY604JZ-TR is identified in the verified data as a lead-free surface-mount component supplied in a 28-pin PLCC/J-lead package. The operating voltage is listed as 4.2 V to 5.7 V. These details make the device most suitable for 5 V-class digital timing systems, provided the host circuit observes the supply limits and uses the correct package footprint. Typical timing applications include digital test equipment, pulse-position calibration, clock-skew compensation, phase alignment, synchronization networks, and embedded timing-generation circuits. The 15 ps resolution can be valuable when fine edge placement is more important than simple propagation delay. Engineers should verify output timing over the complete temperature and supply range using the manufacturer datasheet before treating nominal resolution as a guaranteed system accuracy. For PCB implementation, preserve the J-lead land pattern, route the differential trigger pair as a matched pair, and keep the delay-line supply and return planes low-impedance. Treat the delay path as a timing-sensitive structure: uncontrolled loading, long stubs, or mismatched routing can disturb intended edge timing. The available distributor records are the basis for the commercial and source links listed here; detailed application guidance should be checked against the official Microchip datasheet.

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SY605JC

SY605JC - 125MHz 255-Tap Programmable Delay | Microchip

The Microchip Technology SY605JC is a 125 MHz write-programmable timing edge vernier with 255 taps, 15 ps delay resolution, and a selectable 4 ns to 40 ns delay range. The device is supplied in a 28-LCC J-lead package and provides one independent programmable delay channel for precision edge-positioning and phase-control applications. A programmable delay line is a clock-and-timing semiconductor that digitally selects an adjustable propagation delay between a trigger edge and an output edge. It belongs to the timing IC hierarchy: delay line IC → programmable timing IC → clock and timing IC → semiconductor. This makes the SY605JC useful where a circuit requires calibrated nanosecond offsets, retriggerable timing, or deterministic edge placement without redesigning the surrounding board. Key features include a true 125 MHz retrigger rate, 255 programmable taps, 15 ps delay resolution, and timing accuracy of less than ±1 LSB. Differential TRIGGER and delay WRITE inputs support interface compatibility, while 10K H ECL compatibility supports high-speed digital timing environments. The reported typical power dissipation is 350 mW, making thermal design and power-plane return paths important in dense systems. The SY605 architecture uses the Micrel-Synergys proprietary ASSET bipolar process, according to the manufacturer datasheet information supplied in the verified results. Its differential control inputs and fine delay granularity make it more appropriate than a general-purpose fixed delay line when the delay must be changed by a digital control word. The 28-LCC package preserves a conventional leaded footprint for through-hole or mixed-technology assemblies, but the exact pin names and electrical limits must be confirmed against the official datasheet before layout release. Typical applications include high-speed clock calibration, digital timing alignment, pulse-position control, phase-shift generation, instrumentation, and ECL-compatible timing modules. The device is particularly relevant where a retriggerable event and programmable 15 ps increments simplify calibration or phase alignment. When designing around the SY605JC, preserve the differential input topology and provide adequate decoupling and controlled return paths. Treat the 350 mW typical dissipation as a design input, then verify package thermal performance against the actual board copper and ambient temperature. Avoid assuming the 28-LCC package is interchangeable with a surface-mount package without a footprint and pinout review. This page consolidates the verified distributor descriptions, timing specifications, package information, and replacement-search status for SY605JC. It separates confirmed values from unavailable details rather than estimating pin assignments, pricing, lifecycle, or electrical limits.

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SY605JC-TR

SY605JC-TR - 125MHz 255-Tap Programmable Delay | Microchip (Tape & Reel)

The Microchip Technology SY605JC-TR is a 125 MHz write-programmable timing edge vernier with 255 taps, 15 ps delay resolution, and a selectable 4 ns to 40 ns delay range. The device is supplied in a 28-LCC J-lead package and provides one independent programmable delay channel for precision edge-positioning and phase-control applications. A programmable delay line is a clock-and-timing semiconductor that digitally selects an adjustable propagation delay between a trigger edge and an output edge. It belongs to the timing IC hierarchy: delay line IC → programmable timing IC → clock and timing IC → semiconductor. This makes the SY605JC-TR useful where a circuit requires calibrated nanosecond offsets, retriggerable timing, or deterministic edge placement without redesigning the surrounding board. Key features include a true 125 MHz retrigger rate, 255 programmable taps, 15 ps delay resolution, and timing accuracy of less than ±1 LSB. Differential TRIGGER and delay WRITE inputs support interface compatibility, while 10K H ECL compatibility supports high-speed digital timing environments. The reported typical power dissipation is 350 mW, making thermal design and power-plane return paths important in dense systems. The SY605 architecture uses the Micrel-Synergys proprietary ASSET bipolar process, according to the manufacturer datasheet information supplied in the verified results. Its differential control inputs and fine delay granularity make it more appropriate than a general-purpose fixed delay line when the delay must be changed by a digital control word. The 28-LCC package preserves a conventional leaded footprint for through-hole or mixed-technology assemblies, but the exact pin names and electrical limits must be confirmed against the official datasheet before layout release. Typical applications include high-speed clock calibration, digital timing alignment, pulse-position control, phase-shift generation, instrumentation, and ECL-compatible timing modules. The device is particularly relevant where a retriggerable event and programmable 15 ps increments simplify calibration or phase alignment. When designing around the SY605JC-TR, preserve the differential input topology and provide adequate decoupling and controlled return paths. Treat the 350 mW typical dissipation as a design input, then verify package thermal performance against the actual board copper and ambient temperature. Avoid assuming the 28-LCC package is interchangeable with a surface-mount package without a footprint and pinout review. This page consolidates the verified distributor descriptions, timing specifications, package information, and replacement-search status for SY605JC-TR. It separates confirmed values from unavailable details rather than estimating pin assignments, pricing, lifecycle, or electrical limits.

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SY605JZ

SY605JZ - 255-Tap Programmable Delay Line | Microchip

The Microchip Technology SY605JZ is a programmable delay-line clock and timing IC with 255 taps, 4 ns to 40 ns total delay range, and 15 ps delay resolution in a 28-LCC J-lead package. It supports a true 125 MHz retrigger rate and differential TRIGGER and delay WRITE inputs, making it suitable for deterministic timing alignment in communications, instrumentation, and test systems. The SY605JZ uses one independent delay path and provides less than ±1 LSB timing accuracy. A programmable delay line is a timing-control integrated circuit that introduces a digitally selectable interval between an input edge and its corresponding output. It belongs to the clock-and-timing IC hierarchy, where delay lines support calibration, phase alignment, pulse positioning, and clock compensation. Unlike a general-purpose digital delay, this device provides a calibrated tap-based delay structure for fine timing adjustment. Key features include 255 programmable taps, a 4 ns delay to the first tap, a 40 ns maximum total delay, and 15 ps resolution. Its differential TRIGGER and delay WRITE inputs support robust control-interface design. The less-than-±1-LSB timing-accuracy specification gives engineers a quantified basis for selecting tap values when precise event placement is required. The SY605JZ is intended for high-speed timing systems where deterministic delay calibration and repeatable retriggering matter. Its 125 MHz retrigger rate allows successive trigger events to be accepted at high repetition rates, while the programmable tap count provides fine control over relative timing. The component is packaged as a 28-LCC J-lead device, with tube packaging identified for SY605JZ and tape-and-reel identified for the SY605JZ TR ordering variant. Typical uses include clock phasing, pulse-width calibration, time-interval measurement, communication timing alignment, and laboratory or industrial test equipment. Because it is a delay-line IC rather than a general clock generator, designers should evaluate input edge requirements, output timing, control logic, and PCB propagation effects together when defining the external timing budget. A key design consideration is to preserve controlled edge rates and isolate sensitive timing paths from unnecessary noise. The datasheet-supported TRIGGER and delay WRITE interface should be driven with compatible logic, while power and ground connections should be routed to minimize return-path disturbance. Engineers should also verify all operating conditions against the manufacturer datasheet. This page consolidates distributor pricing, verified timing specifications, package details, and application guidance. It also distinguishes the SY605JZ from SY605JZ TR as a packaging variant rather than presenting the TR suffix as a different functional device, while clearly identifying where a full pinout or verified drop-in substitute is unavailable in the supplied data.

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SY69753LHC

SY69753LHC - 155Mbps CDR Multiplexer IC | Microchip Technology

Microchip Technology SY69753LHC is an application-specific clock and data recovery (CDR) IC for Ethernet, SONET/SDH, and ATM OC-3 communications, operating at up to 155Mbps with one output in a 32-TQFP-EP (7x7) package. It is designed for high-speed serial interfaces requiring recovered clock and data multiplexing. A clock and data recovery IC is a timing IC that extracts a synchronized clock from a serial data stream and aligns recovered data with that clock. In the signal hierarchy, a CDR belongs to clock and timing ICs, timing recovery ICs, interface ICs, and ultimately the broader semiconductor category. The SY69753LHC targets telecommunications transport networks operating at OC-3-class data rates. Key verified features include a maximum data rate of 155Mbps, support for Ethernet, SONET/SDH, and ATM OC-3 interfaces, one recovered output, and a 3.3V supply identified by the distributor listing. The component integrates the functions normally associated with a serial-interface multiplexer and timing-recovery circuit into one package. Its 32-TQFP-EP (7x7) surface-mount package supports compact telecommunications and networking equipment. The IC is positioned for systems in which a 155Mbps serial stream must be recovered and routed while maintaining timing alignment with associated channel-interface circuitry. Compared with passive clock distribution, a CDR performs an active timing function. Compared with a general-purpose transceiver, its application-specific architecture is directed specifically toward Ethernet, SONET/SDH, and ATM OC-3 interface requirements rather than a broad range of data rates. Typical uses include optical transport equipment, SONET/SDH line-interface modules, ATM OC-3 line cards, packet-network timing subsystems, and legacy or migration-era 155Mbps Ethernet interfaces. In each case, system designers must account for the device's specific reference-clock topology, input/output data format, jitter requirements, and termination network because those detailed implementation values are not contained in the supplied web data. The primary design consideration is board-level timing integrity. A 155Mbps CDR can be sensitive to trace discontinuities, impedance mismatches, return-path discontinuities, and inadequate reference-clock conditioning. Designers should follow the manufacturer's layout and component-selection guidance, preserve continuous ground and power planes, and validate the complete channel rather than relying only on nominal data-rate compatibility. This page consolidates the verified distributor specifications, package information, application context, sourcing links, and replacement limitations for the SY69753LHC. It also distinguishes verified facts from electrical parameters that still require confirmation from the manufacturer datasheet, helping engineers make sourcing and design decisions without treating search-result summaries as a complete electrical specification.

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SY69753LHG

SY69753LHG - 155Mbps 3.3V PECL CDR | Microchip

The Microchip Technology SY69753LHG is a 3.3 V clock and data recovery IC with a multiplexer function, designed for 125 Mbps and 155 Mbps PECL links associated with Ethernet, SONET/SDH, and ATM OC-3 systems. The device is supplied in a 32-pin TQFP with exposed pad, measuring 7 mm by 7 mm, and includes a PLL for timing generation and recovery. A clock and data recovery IC is a specialized timing-device category that regenerates a synchronized clock from a serial data stream, compensates for accumulated phase and timing jitter, and supports deterministic transfer across high-speed communication links. Within the broader hierarchy, the SY69753LHG belongs to clock and timing ICs, interface ICs, and ultimately integrated semiconductors used in telecommunications and data-networking equipment. Principal device characteristics include support for data rates of 125 Mbps and 155 Mbps, PECL input and output interfaces, one recovered output, PLL support, and a 3.3 V supply. The package combines a 7 mm by 7 mm body with an exposed pad that provides a thermal and ground connection on a multilayer PCB. Published distributor descriptions also identify the part as a surface-mount clock and timing device suitable for precise timing applications. The SY69753LHG is intended for designs where a transmitted serial stream must be recovered into a usable clock and data pair. Its PLL-based architecture can support clock recovery and phase alignment, while the multiplexer function consolidates timing-related signal routing. The 125 Mbps operating point covers Fast Ethernet-related infrastructure, and the 155 Mbps point aligns with ATM OC-3 and 155 Mbps SONET/SDH-class interfaces. The PECL interface requires source termination, correct common-mode voltage, and controlled-impedance board layout. Typical uses include ATM network interface equipment, SONET/SDH tributary synchronization, Fast Ethernet line-card clocking, telecommunications backplanes, and optical-transport modules. In these systems, the recovered clock reduces accumulated timing drift and provides a stable reference for downstream retimers, serializers, switching silicon, and test equipment. When laying out a circuit around the SY69753LHG, treat the exposed pad as a primary ground and thermal connection rather than an unused package feature. Route PECL clocks and data as short, controlled-impedance nets, provide the decoupling and termination required by the device application circuit, and verify source, receiver, and multiplexer compatibility before layout release. This page combines verified distributor specifications with an engineering-focused assessment of speed, interface type, package implementation, and replacement constraints. It also distinguishes the directly purchasable base part from a tape-and-reel ordering code and documents where complete electrical, pin-level, lifecycle, and pricing information requires confirmation.

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SY69753LHI

SY69753LHI - 155Mbps Clock Data Recovery | Microchip

The Microchip SY69753LHI is a clock recovery and data retiming integrated circuit for OC-3/STS-3 applications operating at 155 Mbps NRZ, supplied in a 32-pin TQFP with exposed pad, 7 mm × 7 mm package. It provides one recovered clock output and is associated with 3.3 V operation, Ethernet, SONET/SDH, and ATM OC-3 signal-chain applications. A clock and data recovery IC, commonly abbreviated CDR, belongs to the clock and timing IC hierarchy within integrated circuits and semiconductor signal-conditioning devices. Its primary function is to recover a usable clock from a serialized data stream while retiming data against that recovered clock. This allows a receiver to maintain alignment between transmitted data and its associated timing information across a high-speed serial link. The verified product information identifies the SY69753LHI as a complete clock recovery and data retiming device for OC-3/STS-3 applications at 155 Mbps NRZ. It is listed as a 3.3 V, 155 Mbps application-specific clock and timing IC with one output. The exposed-pad TQFP construction provides a thermal and grounding interface on a 7 mm × 7 mm surface-mount package, although detailed pin names, input tolerances, jitter specifications, and AC timing limits are not present in the supplied source data. The device is intended for systems where a serial transmitter produces NRZ data at OC-3 or STS-3 rates and the receiver needs regenerated timing rather than a free-running local clock. In this role, the recovered clock can establish a timing reference for subsequent deserialization or return-path multiplexing. Because the verified listing classifies the part as a multiplexer IC with one output, system allocation should provide separate serialization and receive-path functions rather than assuming multiple independent recovered outputs. Typical applications include SONET/SDH terminal equipment, ATM OC-3 line interfaces, Ethernet-oriented 155 Mbps links, telecommunications line cards, and high-speed data transmission systems. The 155 Mbps NRZ operating mode is especially relevant to legacy and installed transport infrastructure where compliant line-card designs already specify this Micrel-family clock recovery function. A key design consideration is that the source data does not disclose the exact pin mapping, differential input amplitude, reference-clock requirements, loop bandwidth, or jitter-transfer behavior. Engineers should therefore obtain the manufacturer datasheet and verify signal integrity, termination, decoupling, and exposed-pad layout against the complete electrical specification before releasing a PCB or substituting any component. This page consolidates verified distributor descriptions, package information, sourcing links, application context, and design cautions. It also distinguishes documented facts from unavailable parameters so engineers can identify what must still be confirmed in the manufacturer datasheet before layout or production use.

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SY69952ZC

SY69952ZC - 155.52Mbps Clock Recovery IC | Microchip

The Microchip Technology SY69952ZC is an OC-3/STS-3 clock-recovering transceiver operating at 155.52 Mbps with one output in a 28-SOIC package. It combines an ATM-compatible transmitter and receiver with clock and data recovery for Ethernet, SONET/SDH, and ATM transport equipment. The verified device data identifies the SY69952 family as a single-chip OC-3/STS-3 solution and specifically associates SY69952ZC with a 28-pin SOIC package. A clock-recovering transceiver is a clock-and-timing semiconductor that accepts high-speed serial data, recovers timing from the incoming signal, and supports transmission and reception within optical or network transport systems. In the broader hierarchy, it belongs to clock and timing ICs, interface ICs, and semiconductor signal-path components. Its primary value is integrating functions that otherwise require separate transmitter, receiver, and clock-recovery circuitry. The verified features include complete ATM-compatible single-chip transmitter and receiver integration, operation at 155.52 Mbps, one recovered-clock output, and compatibility with named ATM processor platforms. The available documentation also indicates seamless operation with PM5345, VNS67200, WAC-013-B/WAC-413-A, and NEC µPD98402 UNI processors. Electrical ratings, supply voltage, recovery thresholds, jitter performance, operating temperature, and package dimensions were not supplied in the retrieved data and therefore must be confirmed from the original manufacturer datasheet. SY69952ZC is suited to ATM and SONET/SDH equipment, OC-3/STS-3 line-interface assemblies, optical transport modules, network processor interfaces, and legacy synchronous multiplexing systems. Its 28-SOIC construction favors conventional surface-mount assembly, but high-speed signal integrity still depends on controlled impedance routing, solid return paths, and careful power-supply decoupling. The device should be evaluated against the original datasheet and processor-interface requirements before use in a new design. A key design consideration is that this is a legacy OC-3/STS-3 clock-recovery device rather than a general-purpose Ethernet PHY. Verify signal rates, logic levels, recovered-clock jitter, reference-clock requirements, and processor timing before replacing it with any modern interface. Lifecycle status and a documented drop-in replacement could not be established from the supplied results. This page consolidates the verified source links, procurement data availability, application context, and unresolved engineering information without inventing missing specifications.

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SY69952ZH

SY69952ZH - 155.52Mbps Clock Recovery IC | Microchip

The Microchip Technology SY69952ZH is an OC-3/STS-3 clock-recovering transceiver with a stated operating rate of 155.52Mbps, one output, and a 28-pin SOIC package. It combines clock and data recovery with PECL-oriented interface information identified in the verified results. The device is intended for telecommunications equipment using Ethernet, SONET/SDH, and ATM-related transports, where recovered timing must be extracted from a high-speed serial signal. A clock and data recovery transceiver, or CDR, is an integrated circuit that receives a serial data stream, separates or reconstructs its timing relationship, and produces aligned clock and data outputs. In the optical-transport hierarchy, it sits between the line-side high-speed interface and downstream digital logic. The SY69952ZH is therefore a timing-integrity component rather than a general-purpose clock generator or ordinary digital interface IC. The verified product information identifies OC-3/STS-3 operation, a 155.52Mbps rate, PECL input information, one output, and compatibility with several ATM UNI processors. A separate technical result describes a clock-generator input range of 6.41MHz to 19.64MHz, but the supplied excerpts do not establish how that range maps to every operating mode, supply condition, or pin function. Engineers should therefore use the manufacturer datasheet for final acquisition and circuit-design decisions. The 28-SOIC package offers through-hole assembly in a 7.50mm-wide body format according to the distributor result. Its size and pin count make it practical for legacy telecommunications boards, industrial transmission equipment, and repair or modernization programs. The package is not a modern high-density surface-mount ball-grid-array solution, so board area and manual or automated through-hole compatibility should be considered. Typical uses include ATM UNI links, SONET/SDH tributary-rate equipment, Ethernet transport modules, and OC-3/STS-3 line cards. The recovered-clock function is valuable when the receiver must regenerate a stable timing reference before forwarding payload data. The verified material does not provide a full electrical characterization, recommended decoupling, propagation-delay distribution, jitter specification, or absolute maximum-rating table. When designing a replacement board, verify every pin against the official datasheet and preserve the original channel-length and impedance layout. PECL interfaces are sensitive to biasing, termination, trace geometry, and return paths, so a nominal pin-compatible package alone does not guarantee signal-integrity equivalence. Confirm supply voltage, logic thresholds, reference-clock requirements, and recovery-loop behavior before production use.

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SY75572LMG

SY75572LMG - 267MHz Differential Clock Fanout | Microchip

The Microchip Technology SY75572LMG is a high-speed, fully differential 1:2 clock fanout buffer with a 2:1 input multiplexer, optimized to provide two identical differential output copies. It supports clock frequencies up to 267 MHz and is specified with 137 fs phase jitter and a maximum output-to-output skew of 50 ps. The device is offered in a 16-VFQFN package with an exposed pad and is designed for PCI Express clock-distribution applications. A clock fanout buffer is a timing IC that receives one differential clock source and reproduces it across multiple output paths. This architecture helps maintain consistent clock timing across widely separated circuits while reducing load-dependent distortion at the source. The SY75572LMG extends this concept with a 2:1 input MUX, allowing two differential input choices to be selected for the two identical output copies. HCSL and LVDS logic levels are supported for input and output operation according to the manufacturer product description. These high-speed differential signaling levels are commonly used in clock links associated with PCI Express systems, where low jitter, controlled skew, and reliable signal transmission are important. The device operates from a 3.3 V ±5% power supply, as stated in the manufacturer datasheet listing. The principal performance characteristics are the 267 MHz operating frequency, 137 fs phase jitter, and 50 ps maximum output-to-output skew. The differential clock architecture provides two matching output copies, while the integrated multiplexer enables source selection in systems that need flexible clock routing or redundancy. Its 16-VFQFN exposed-pad package is intended for compact surface-mount designs requiring careful high-speed layout practices. Typical uses include PCI Express reference-clock distribution, server and workstation clock trees, communications equipment, test and measurement systems, and other high-speed digital platforms. The exposed pad provides a thermal connection to the PCB copper, allowing heat to be transferred away from the device when the board layout includes suitable thermal vias and copper area. For implementation, route differential clock pairs as controlled-impedance nets on a multilayer PCB, keep the input and output paths short, and place decoupling capacitors close to the supply pins. Follow the pin-description table and recommended layout in the manufacturer datasheet when assigning tracks, terminating the differential network, and confirming the exposed-pad connection. This page organizes the verified SY75572LMG specifications, pricing evidence rules, source links, and application guidance into an engineering-focused reference. It also distinguishes confirmed device characteristics from parameters that require direct consultation of the manufacturer datasheet before schematic release or PCB implementation.

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SY75576LKY

SY75576LKY - 267 MHz 1:4 HCSL Clock Fanout Buffer

The Microchip Technology SY75576LKY is a high-speed, fully differential 1:4 clock fanout buffer with a maximum operating frequency of 267 MHz, four identical differential outputs, 137 fs phase jitter, and maximum output-to-output skew of 50 ps. The device is housed in a 20-pin TSSOP package with a 0.173-inch body width of 4.40 mm and operates from a 3.135 V to 3.465 V core supply. A clock fanout buffer is a clock-and-timing IC that receives a differential reference clock and generates multiple synchronized copies for separate loads. Within the broader hierarchy of semiconductor timing devices, a fanout buffer sits between a clock source and the circuits requiring low-skew clock distribution. Its purpose is to isolate loads, reproduce a high-quality differential waveform, and prevent downstream loading from degrading source jitter or edge timing. The SY75576LKY is optimized for PCI Express clock-distribution requirements. Its 1:4 differential architecture provides one input pair feeding four output pairs, allowing a PCIe source to drive multiple endpoints while maintaining controlled skew. The stated 137 fs phase jitter and 50 ps maximum output-to-output skew are particularly useful in high-speed serial links where timing uncertainty can reduce eye margin. The output stage supports HCSL and LVDS signaling, as identified in the product documentation, and operates from a 3.135 V to 3.465 V supply. The industrial temperature range extends from -40 °C to +85 °C. Because the device is intended for high-speed differential distribution, PCB construction, controlled impedance, return paths, and connector or package transition geometry are as important as the nominal clock frequency. Typical uses include PCI Express endpoint and root-complex clock distribution, high-speed serializer input clocks, networking equipment clock trees, and test-and-measurement systems requiring multiple low-skew copies of one reference. It can also serve as a jitter-isolating fanout stage when placed close to the receiving loads. For implementation, follow the manufacturer’s recommended decoupling and high-speed layout guidance, keep differential traces impedance-controlled, and avoid adding unnecessary stubs or test pads on the clock path. Validate source, output, and receiver termination requirements across voltage and temperature before releasing the layout. This page combines the documented clock-performance characteristics, package details, application guidance, and engineering design notes to provide practical selection and layout context beyond a basic distributor parameter list.

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SY75578LMG

SY75578LMG - 267MHz 1:8 HCSL Clock Fanout Buffer | Microchip

The Microchip Technology SY75578LMG is a high-speed, fully differential 1:8 clock fanout buffer operating up to 267 MHz, with eight HCSL outputs, two selectable inputs, 130 fs phase jitter, and maximum 100 ps output-to-output skew. The device is packaged in a 32-pin QFN with an exposed pad and a 5 mm x 5 mm body for compact PCI Express clock-distribution designs. A clock fanout buffer is a clock distribution circuit that receives one differential clock and generates multiple identical output copies. The SY75578LMG belongs to the clock buffer and driver hierarchy, where low jitter, controlled skew, differential signaling, and repeatable output characteristics are essential for transferring timing signals across a PCB. Its 1:8 fanout ratio allows one source clock to feed eight destination circuits without recreating the original clock eight times. Key features include acceptance of HCSL or LVDS input signals, generation of HCSL output levels, two input paths with multiplexing, eight identical output copies, and operation from a 3.3 V supply with a tolerance of plus or minus 5%. The 130 fs phase-jitter figure supports precise high-speed timing, while the maximum 100 ps output-to-output skew establishes the permitted variation among the eight outputs. The fully differential architecture is designed for PCI Express clock-distribution requirements. Differential signaling provides noise immunity on circuit-board interconnects, while the internal fanout stage creates eight matched clock outputs for endpoints, switches, retimers, serializers, or test equipment. The exposed-pad QFN construction supports heat transfer through the PCB, although the thermal requirements of the exact carrier board and loading must be evaluated during layout review. Typical uses include PCI Express reference-clock distribution, server and workstation backplanes, high-speed interface test systems, networking equipment, and industrial control boards that need multiple low-skew differential clock copies. In a PCI Express design, the device can distribute a common 267 MHz-class reference clock to multiple lanes or downstream circuits while maintaining consistent phase relationships. PCB design requires short, symmetric differential routes, continuous reference planes, controlled impedance, and careful placement of the exposed-pad thermal and electrical connections. Decoupling capacitors should be positioned close to the supply and ground pins. Input and output return paths should avoid discontinuities, and the unused clock inputs must be connected according to the manufacturer datasheet rather than left floating. This page combines the manufacturer clock-performance specifications, package details, application guidance, comparison parameters, and practical layout considerations. It also distinguishes a genuine same-package replacement from merely similar clock buffers so that engineers can evaluate drop-in decisions without changing PCB geometry or timing requirements.

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SY87700LHG

SY87700LHG - 175Mbps AnyRate CDR | Microchip Technology

Microchip Technology SY87700LHG is a 3.3 V application-specific clock and timing integrated circuit that performs AnyRate clock and data recovery for NRZ data streams from 32 Mbps to 175 Mbps. The device provides one recovered clock output and incorporates two on-chip phase-locked loops, one dedicated to clock generation and the other to clock recovery. It is packaged in a 32-pin TQFP exposed-pad package measuring 7 mm by 7 mm. A clock and data recovery IC, or CDR, is a specialized timing-integrated-circuit category used to regenerate a stable clock from a serial data stream whose relationship to the source clock may have accumulated timing offset, jitter, or noise. In the broader semiconductor hierarchy, the SY87700LHG belongs to clock and timing ICs, where it sits above the functional block level and below network-interface, telecommunications, and clock-generation subsystems. Its AnyRate architecture is intended to support multiple line rates while recovering a usable timing reference. Key features include operation from 32 Mbps to 175 Mbps, compatibility with SONET, SDH, ATM, and Ethernet-oriented applications, and support for NRZ data streams. The manufacturer documentation identifies both 3.3 V and 5 V supply options within the SY87700 family, while the SY87700LHG orderable configuration is identified as the 3.3 V version. Two on-chip PLLs provide the timing foundation for clock generation and clock recovery, while the single output gives the recovered clock a clearly defined destination within the design. The architecture is important because optical and serial communication links can accumulate timing skew between the transmitter and receiver. By extracting and regenerating timing from the incoming stream, the SY87700LHG reduces dependence on a separate source-synchronous clock at the receiving endpoint. Its 32-to-175 Mbps operating range makes it relevant to legacy telecommunications, asynchronous transfer mode, and recovered-clock network designs rather than modern multi-gigabit serializer-desializer lanes. Typical applications include SONET and SDH tributary interfaces, ATM equipment, Ethernet clock-recovery paths, telecommunications line cards, and legacy network-interface modules. It can also support recovered-clock generation in industrial communication equipment where a 32-to-175 Mbps NRZ interface must remain synchronized over distance, cable, or optical conversion. The principal design consideration is exposed-pad thermal management. Place input and output decoupling capacitors close to their associated supply and clock pins, route high-speed traces with controlled impedance, and connect the exposed thermal pad to a properly sized ground or power plane according to the manufacturer pin-description and layout guidance. Validate loop bandwidth, jitter tolerance, and output jitter in the complete channel rather than relying on the nominal data-rate range alone. This product page combines the device’s operating envelope, package details, verified pricing structure, same-family replacement candidates, comparison parameters, and implementation guidance. It also distinguishes confirmed drop-in candidates from lower-power or functionally similar devices whose exact electrical and pin-level compatibility still requires schematic-level review.

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SY87700LHI

SY87700LHI - 3.3V 175Mbps AnyRate CDR | Microchip Technology

The Microchip Technology SY87700LHI is a 3.3V AnyRate clock and data recovery integrated circuit for 32Mbps to 175Mbps NRZ data streams, housed in a 32-pin TQFP-EP (7x7 mm) package. It combines clock generation and clock-and-data recovery functions, provides one recovered output, and includes two on-chip phase-locked loops for telecommunications and high-speed digital-network applications. A clock and data recovery IC, or CDR, is a specialized timing and timing-recovery component that extracts a usable clock from an incoming data stream and can regenerate aligned data and clock outputs. In the broader semiconductor hierarchy, a CDR belongs to clock and timing ICs, phase-locked-loop-based timing ICs, and ultimately the wider integrated-circuit category. The SY87700LHI is specifically positioned for SONET, SDH, ATM, Ethernet, and other high-speed NRZ transmission systems. Verified features include operation from a single 3.3V supply, recovery of data rates from 32Mbps through 175Mbps, one output, and an industrial temperature range of -40°C to +85°C. Two integrated PLLs support clock generation and clock recovery, while the AnyRate architecture allows the device to accommodate a broad range of line rates rather than being restricted to one fixed frequency. These characteristics make it useful in line cards, routers, ATM equipment, SONET/SDH transport systems, and other synchronization-sensitive network equipment. The device accepts PECL input according to distributor and manufacturer-derived listing data. Its recovery and generation functions are implemented around phase-locked-loop timing, enabling it to recover a clock from a corrupted or distorted NRZ stream and present a regenerated output to downstream logic. Exact jitter, lock-time, input-output delay, output-current, and absolute-maximum-rating details were not included in the supplied verified extracts and should therefore be confirmed in the manufacturer datasheet before release to production. The 32-TQFP-EP package provides 32 perimeter pins plus a thermal or electrical center feature associated with the EP package designation. Compared with a conventional TQFP-32, the EP construction can improve heat transfer into a PCB copper plane. This is valuable in communications equipment where continuous clock-recovery activity can contribute to device dissipation even when the external interface rate changes. A key design consideration is that this is a legacy-style PECL timing IC rather than a general-purpose low-voltage CMOS interface device. PCB layout must provide controlled impedance, short high-speed traces, appropriate reference-plane continuity, and clean separation between noisy switching paths and the recovered clock and data outputs. Decoupling should follow the manufacturer datasheet layout, and the exposed-pad region should be connected according to its electrical and thermal requirements. This page consolidates verified distributor specifications, same-family replacement candidates, comparison parameters, and practical implementation guidance. It distinguishes verified facts from unavailable datasheet details so engineers can identify procurement choices, engineering trade-offs, and the remaining checks required before using the SY87700LHI in a new SONET, SDH, ATM, or Ethernet timing design.

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SY58051AUMG - 10.7Gbps CML AnyGate, 16-QFN | Microchip

SY58051AUMG-TR - 10.7Gbps CML AnyGate Logic | Microchip

SY604JC - 255-Tap 4-40ns Programmable Delay | Microchip

SY604JC-TR - 255-Tap 4ns-40ns Delay Line | Microchip

SY604JZ - 255-Tap 4-40ns Delay Line IC | Microchip

SY604JZ-TR - 255-Tap 4-40ns Delay Line IC | Microchip (Tape & Reel)

SY605JC - 125MHz 255-Tap Programmable Delay | Microchip

SY605JC-TR - 125MHz 255-Tap Programmable Delay | Microchip (Tape & Reel)

SY605JZ - 255-Tap Programmable Delay Line | Microchip

SY69753LHC - 155Mbps CDR Multiplexer IC | Microchip Technology

SY69753LHG - 155Mbps 3.3V PECL CDR | Microchip

SY69753LHI - 155Mbps Clock Data Recovery | Microchip

SY69952ZC - 155.52Mbps Clock Recovery IC | Microchip

SY69952ZH - 155.52Mbps Clock Recovery IC | Microchip

SY75572LMG - 267MHz Differential Clock Fanout | Microchip

SY75576LKY - 267 MHz 1:4 HCSL Clock Fanout Buffer

SY75578LMG - 267MHz 1:8 HCSL Clock Fanout Buffer | Microchip

SY87700LHG - 175Mbps AnyRate CDR | Microchip Technology

SY87700LHI - 3.3V 175Mbps AnyRate CDR | Microchip Technology