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المنتجات (38,000+)

STW81101ATR - Multi-Band RF Frequency Synthesizer | STMicroelectronics
STW81101ATR

STW81101ATR - Multi-Band RF Frequency Synthesizer | STMicroelectronics

The STMicroelectronics STW81101ATR is a multi-band RF frequency synthesizer with integrated VCOs, integer-N frequency synthesis, and dual differential VCO outputs in a 28-pin VFQFPN package. The device accepts a 10 MHz to 200 MHz input reference and operates from a 3 V to 3.6 V supply. Its 0.5 mm terminal pitch and approximately 1 mm package height support compact RF and wireless-infrastructure equipment. A frequency synthesizer is a clock-and-timing IC that generates a stable, programmable output frequency by locking a voltage-controlled oscillator to a reference signal. The STW81101ATR belongs to the PLL, clock-generator, and RF-synthesizer hierarchy. Integrating the VCOs with the synthesizer reduces board area compared with a discrete oscillator and separate phase-locked-loop arrangement while retaining programmable RF output generation. The verified product information identifies integer-N operation and two differential integrated VCOs with automatic center-frequency calibration. Direct and internally divided output arrangements are indicated in the available documentation, although the complete frequency ranges are not exposed in the supplied excerpts. The 10 MHz to 200 MHz input range provides a reference interface suitable for RF systems that derive a stable carrier from an external reference or frequency multiplier. The STW81101ATR is specified for a 3 V to 3.6 V supply and an operating temperature range of -40°C to +85°C. These values make it appropriate for compact industrial and commercial RF equipment where a low-voltage control domain, moderate temperature range, and surface-mount construction are required. Its integrated synthesizer architecture is intended to simplify RF signal generation compared with a discrete VCO, divider, charge-pump, and loop-filter implementation. Typical uses include wireless infrastructure, RF test equipment, frequency-generation modules, and communication receivers that require a phase-locked RF carrier. In these systems, the device can generate a calibrated carrier that is subsequently mixed, modulated, or divided. Integration is especially useful where PCB area is constrained and repeatable center-frequency calibration is more valuable than the flexibility of a fully discrete oscillator network. Designers should provide a clean reference signal and follow the manufacturer layout guidance for the differential VCO and synthesizer interfaces. Decoupling and high-frequency routing are critical because supply noise or trace coupling can degrade phase-noise and spur performance. The exact recommended capacitor values, loop-filter constants, output-frequency ranges, and RF output power must be taken from the complete manufacturer datasheet. This page consolidates the verified package, interface, supply, temperature, sourcing, and cross-reference information into an engineering-focused selection guide. It also distinguishes a documented same-package option from unsupported cross-package suggestions, helping designers avoid treating functionally related RF ICs as true drop-in replacements.

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STW81102AT - Multi-Band RF Synthesizer | STMicroelectronics
STW81102AT

STW81102AT - Multi-Band RF Synthesizer | STMicroelectronics

STMicroelectronics STW81102AT is a multi-band RF frequency synthesizer with integrated VCOs, an integer-N architecture, and a 28-pin VFQFPN exposed-pad package. The verified product information identifies a 10 MHz to 200 MHz input range and a maximum direct output frequency of 1162.5 MHz. It is intended for RF systems that require controlled frequency generation across multiple bands from a low-voltage supply. A frequency synthesizer belongs to the clock and timing IC hierarchy, where it combines a phase-locked loop, voltage-controlled oscillator, frequency divider, and output driver. In the STW81102AT, dual differential integrated VCOs and automatic center-frequency calibration provide the tuning resources needed for multi-band synthesis. The integer-N architecture means the synthesizer establishes its output relationship to a reference frequency through integer feedback division rather than fractional-N interpolation. The principal verified features are the two integrated differential VCOs, automatic center-frequency calibration, direct and divided outputs, and coverage extending to 1162.5 MHz. The 5 mm by 5 mm VFQFPN package supports compact RF designs, while its exposed pad provides a thermal and electrical connection to the PCB. The listed supply range is 3 V to 3.6 V, which makes external supply regulation and careful high-frequency layout essential. STW81102AT is categorized for industrial use and operates from -40 °C to 85 °C. Its BICMOS implementation combines bipolar and CMOS circuit techniques, which is significant in an RF synthesizer because the device must generate controllable high-frequency signals while operating from a low-voltage digital-oriented supply. The maximum reflow temperature stated in the verified product data is 260 °C. Typical uses include multi-band RF front ends, wireless communication equipment, instrumentation, and frequency-generation subsystems. In these systems, the synthesizer can provide a phase-related output to mixer, modulator, or measurement circuits. The design must account for VCO routing, controlled reference distribution, impedance-matched interconnects, and adequate exposed-pad thermal dissipation. The most important layout consideration is to preserve a short, symmetric RF path between the device, matching network, and antenna-side circuitry. Reference and control signals should be kept away from sensitive RF nodes, and the exposed pad should be connected to the ground plane using multiple low-inductance vias. Exact pin names, PLL settings, output-drive details, and recommended external components require confirmation in the manufacturer datasheet. This page consolidates the verified STW81102AT specifications, sourcing links, application guidance, and replacement research into an engineering-oriented overview. It also distinguishes verified drop-in replacements from merely similar frequency synthesizers, helping designers avoid assuming that a different PLL with similar frequency capability is PCB-compatible.

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STW81102ATR - 4.65 GHz Multi-Band RF Synthesizer | STMicroelectronics
STW81102ATR

STW81102ATR - 4.65 GHz Multi-Band RF Synthesizer | STMicroelectronics

STMicroelectronics STW81102ATR is an integer-N multi-band RF frequency synthesizer with dual differential integrated voltage-controlled oscillators, a maximum listed frequency of 4.65 GHz, and a 28-pin VFQFPN package. The R suffix identifies the tape-and-reel ordering option, while the device belongs to STMicroelectronics' Clock & Timing family of clock generators, phase-locked loops, and frequency synthesizers. An RF frequency synthesizer is a clock-and-timing semiconductor that locks a voltage-controlled oscillator to a stable reference frequency. Its phase-locked loop compares the divided output with the reference signal, then adjusts the oscillator control voltage until phase and frequency align. This architecture allows an RF system to generate a stable programmable output from a shared reference instead of relying on multiple independent oscillators. The STW81102ATR uses an integer-N frequency-synthesis architecture and incorporates two differential VCOs with automatic center-frequency calibration. According to the supplied STMicroelectronics datasheet indexing, each VCO provides a direct RF output path, while an internal divider supports an additional lower-frequency division function. Automatic center-frequency calibration helps compensate for process, supply, and temperature variation that would otherwise move the oscillator operating point. The verified distributor and datasheet listings identify the device as operating up to 4.65 GHz with one listed output and approximately 12 mA device current. These figures make it relevant to RF and wireless-infrastructure designs, although the supplied sources do not provide the complete input-frequency ranges, output-power levels, phase-noise curves, reference sensitivity, lock-time limits, supply-voltage range, temperature range, or recommended decoupling network. Typical use cases include multi-band wireless infrastructure, local-oscillator generation, RF transceiver frequency planning, and other systems requiring programmable RF output with integrated VCOs. The two calibrated differential VCOs are especially useful when a design requires more than one related RF frequency source or a direct output combined with a divided output. Engineers should still verify phase-noise and spur performance against the exact channel and band requirements. The main design consideration is that this is a high-frequency analog/RF subsystem rather than a general-purpose digital clock generator. PCB traces, supply filtering, reference routing, ground-plane continuity, and exposed-pad thermal management can affect VCO behavior. Decoupling and loop-filter values must be selected from the complete manufacturer datasheet and reference schematic rather than inferred from the distributor summary. This page consolidates the verified catalog data for the STW81102ATR and adds application context, engineering caveats, and a drop-in comparison with the identified STW81102AT ordering variant. The comparison distinguishes verified facts from parameters that require confirmation from the full manufacturer datasheet before layout or qualification.

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STW81200T - 6 GHz Fractional-N RF Synthesizer | STMicroelectronics
STW81200T

STW81200T - 6 GHz Fractional-N RF Synthesizer | STMicroelectronics

The STMicroelectronics STW81200T is a wideband RF PLL frequency synthesizer covering 46.875 MHz to 6 GHz, with one output, in a 36-VFQFN exposed-pad package. It combines dual Fractional-N and Integer-N architectures with three low-phase-noise VCOs and integrated LDOs for RF signal-generation systems. A frequency synthesizer generates or converts an output frequency from a reference source while controlling phase and frequency. A PLL-based synthesizer belongs to the clock and timing IC hierarchy, where it extends beyond ordinary clock distribution into phase-locked-loop frequency generation, RF signal conditioning, modulation, and waveform conversion. The device's headline capabilities are its 46.875 MHz-to-6 GHz tuning range, fractional-N or integer-N operation, and three integrated low-phase-noise VCOs. Integrated LDOs include over-current protection, internal power ramping, and an external 100 nF feed-forward bypass requirement described in the manufacturer datasheet. This integration supports compact RF designs while reducing the number of separate frequency-generation blocks. Architecturally, STW81200T supports both fractional-N synthesis for programmable frequency relationships and integer-N synthesis for channels that do not require fractional division. The three VCO choices allow the system designer to optimize frequency coverage and phase-noise behavior across the operating band. The wide range makes the synthesizer relevant to RF communications, test equipment, and frequency-conversion stages. Typical applications include wideband RF transceivers, local oscillators, laboratory synthesizers, communication infrastructure, and instrumentation requiring programmable output above 500 MHz. Its principal trade-off is integration: fewer external frequency-generation blocks are required, but the design must follow the datasheet's reference, bypass-capacitor, grounding, and exposed-pad requirements. Place the 100 nF feed-forward capacitor exactly as specified in the manufacturer datasheet and provide the required supply decoupling at every LDO. Keep the reference path short and controlled, connect the exposed pad to the recommended thermal and ground plane, and validate phase-noise, spur, and settling performance across the intended frequency plan. This page combines verified distributor data, official STMicroelectronics documentation, application guidance, and procurement information.

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STW81200TR - 6 GHz Fractional-N RF Synthesizer | STMicroelectronics (Tape & Reel)
STW81200TR

STW81200TR - 6 GHz Fractional-N RF Synthesizer | STMicroelectronics (Tape & Reel)

The STMicroelectronics STW81200TR is a wideband RF PLL frequency synthesizer covering 46.875 MHz to 6 GHz, with one output, in a 36-VFQFN exposed-pad package. It combines dual Fractional-N and Integer-N architectures with three low-phase-noise VCOs and integrated LDOs for RF signal-generation systems. A frequency synthesizer generates or converts an output frequency from a reference source while controlling phase and frequency. A PLL-based synthesizer belongs to the clock and timing IC hierarchy, where it extends beyond ordinary clock distribution into phase-locked-loop frequency generation, RF signal conditioning, modulation, and waveform conversion. The device's headline capabilities are its 46.875 MHz-to-6 GHz tuning range, fractional-N or integer-N operation, and three integrated low-phase-noise VCOs. Integrated LDOs include over-current protection, internal power ramping, and an external 100 nF feed-forward bypass requirement described in the manufacturer datasheet. This integration supports compact RF designs while reducing the number of separate frequency-generation blocks. Architecturally, STW81200TR supports both fractional-N synthesis for programmable frequency relationships and integer-N synthesis for channels that do not require fractional division. The three VCO choices allow the system designer to optimize frequency coverage and phase-noise behavior across the operating band. The wide range makes the synthesizer relevant to RF communications, test equipment, and frequency-conversion stages. Typical applications include wideband RF transceivers, local oscillators, laboratory synthesizers, communication infrastructure, and instrumentation requiring programmable output above 500 MHz. Its principal trade-off is integration: fewer external frequency-generation blocks are required, but the design must follow the datasheet's reference, bypass-capacitor, grounding, and exposed-pad requirements. Place the 100 nF feed-forward capacitor exactly as specified in the manufacturer datasheet and provide the required supply decoupling at every LDO. Keep the reference path short and controlled, connect the exposed pad to the recommended thermal and ground plane, and validate phase-noise, spur, and settling performance across the intended frequency plan. This page combines verified distributor data, official STMicroelectronics documentation, application guidance, and procurement information.

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SVF312R3K1CKU2 - Vybrid VF3xxR 1.5MB SRAM 266MHz | NXP
SVF312R3K1CKU2

SVF312R3K1CKU2 - Vybrid VF3xxR 1.5MB SRAM 266MHz | NXP

The NXP Semiconductors (formerly Freescale) SVF312R3K1CKU2 is a dual-core ARM microprocessor IC from the Vybrid VF3xxR family, integrating an ARM Cortex-A5 application core and an ARM Cortex-M4 real-time control core on a single die for instrument cluster and entry-level infotainment applications. It operates at up to 266MHz with 1.5MB on-chip SRAM, and is housed in a 176-pin HLQFP (24x24mm) package. A microprocessor is a single-chip CPU subsystem that integrates a processing core, memory controllers, peripherals, and I/O. The Vybrid family sits within NXP's automotive/industrial processor portfolio between traditional MCUs and higher-end application processors, designed to combine MPU-class GUI capability with MCU-class deterministic real-time control. Key features include dual-core heterogeneous architecture (Cortex-A5 + Cortex-M4), 1.5MB on-chip SRAM, integrated LCD controller for instrument cluster displays, dual 12-bit ADCs for analog sensor acquisition, and a wide peripheral set including CAN, LIN, Ethernet, and FlexRay. The Cortex-A5 runs the HMI/OS layer while the Cortex-M4 handles time-critical motor/sensor control, eliminating the need for a separate companion MCU. Architecturally the VF3xxR uses NXP's heterogeneous multicore platform with hardware semaphore-based inter-core communication, shared SRAM, and dedicated peripheral bus access for each core. The Cortex-A5 runs the rich-OS stack; the Cortex-M4 runs an RTOS or bare-metal firmware, with deterministic interrupt latency for safety-critical cluster functions. Typical applications include automotive instrument clusters, entry-level infotainment head units, industrial HMI panels, body controller gateways, and telematics control units. The combination of cluster graphics capability plus real-time control makes it purpose-built for cost-sensitive connected dashboards. When designing with this device, allocate boot configuration via the boot mode pins early, and ensure both cores' firmware images are managed in the flash partition layout. Power sequencing must respect the A5/M4 power domain requirements documented in the reference manual. This page synthesizes distributor pricing, drop-in alternatives from the same Vybrid family, and practical design notes not found in the manufacturer datasheet. Specifications last verified against NXP product page on 2026-10-17.

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SX05-0B00-00 - 12 Gb/s SAS Expander, 16 I/O | Broadcom
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 - 8-bit I2C GPIO Expander with LED Driver | Semtech
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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SY100EL16ZC - 5V Differential Receiver SOIC-8 | Synergy
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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SY100EL52ZC - 5V ECL Diff Data/Clock D Flip-Flop | Microchip
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 - 2.5GHz Differential D-Type Latch | Microchip
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 - 10.7Gbps CML AnyGate, 16-QFN | Microchip
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 - 10.7Gbps CML AnyGate Logic | Microchip
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 - 255-Tap 4-40ns Programmable Delay | Microchip
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 - 255-Tap 4ns-40ns Delay Line | Microchip
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 - 255-Tap 4-40ns Delay Line IC | Microchip
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 - 255-Tap 4-40ns Delay Line IC | Microchip (Tape & Reel)
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 - 125MHz 255-Tap Programmable Delay | Microchip
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 - 125MHz 255-Tap Programmable Delay | Microchip (Tape & Reel)
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 - 255-Tap Programmable Delay Line | Microchip
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 - 155Mbps CDR Multiplexer IC | Microchip Technology
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 - 155Mbps 3.3V PECL CDR | Microchip
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 - 155Mbps Clock Data Recovery | Microchip
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 - 155.52Mbps Clock Recovery IC | Microchip
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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