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TPS8802DCPR - Smoke Alarm AFE with CO Support | TI
The Texas Instruments TPS8802DCPR is a smoke-alarm analog front end (AFE) for residential smoke detectors, integrating the regulators, amplifiers, and drivers required for a dual-wave photoelectric smoke alarm and carbon monoxide detection system. The verified distributor listing identifies a 38-pin HTSSOP package and analog input with I2C output. TI describes the device as a high-performance, multi-channel, digital-input solution whose flexible architecture suits smoke-alarm systems where precision and power consumption are critical. What is a smoke-alarm analog front end? An AFE is a semiconductor that connects physical sensing elements to an embedded system. In a photoelectric alarm, light scattering and light-absorption signals require controlled excitation, amplification, filtering, and diagnosis. The TPS8802DCPR integrates those signal-chain functions together with supporting regulators and drivers, reducing the number of discrete components and helping designers create a compact, low-power detector platform. The verified TI product information highlights a wide input-voltage range, low standby-power consumption, and power-saving features designed to support 10-year battery-powered smoke-alarm systems. Its dual-wave photoelectric architecture and CO-detection capability allow one integrated platform to combine optical smoke sensing with electrochemical CO-sensor signal conditioning. The I2C interface provides a digital control and diagnostic path, while the analog input supports direct connection to sensing circuitry. The TPS8802DCPR is intended for residential smoke alarms, combination smoke-and-CO alarms, and other safety products requiring highly integrated sensing support. Its integrated regulators and amplifiers can simplify power-tree design compared with a discrete implementation, while digital configuration can support manufacturing tests and field diagnostics. Exact electrical limits, gain settings, timing values, and pin functions were not included in the supplied verified records and therefore require confirmation from the manufacturer datasheet before design release. For battery operation, standby current is especially important because the target application is a long-lived safety device. Designers should calculate average and peak current across the sensing duty cycle, confirm regulator startup behavior, and verify that low-power modes preserve alarm thresholds and diagnostic performance. The I2C pull-up arrangement, grounding, and decoupling should follow the manufacturer layout guidance to prevent communication errors or unintended current consumption. This product page consolidates the verified distributor classification, manufacturer application description, package information, source links, and design cautions. It does not invent electrical parameters or claim unverified drop-in equivalents. Confirm the complete pinout, absolute maximum ratings, recommended operating conditions, and lifecycle status in the current Texas Instruments documentation before schematic capture or PCB release.
TRS3221EIDBR - 3-5.5V RS-232 Transceiver, ±15kV ESD | Texas Instruments
The Texas Instruments TRS3221EIDBR is a 3-V to 5.5-V single-channel RS-232 line driver/receiver with ±15-kV IEC-ESD protection, packaged in a 16-pin SSOP (DB). It operates from a single supply rail and integrates a charge-pump that generates the ±RS-232 voltage swing from the input supply, so no external ±12 V rails are required. The device supports data rates up to 250 kbps and is rated for ±15-kV HBM, ±8-kV IEC 61000-4-2 contact, and ±15-kV IEC 61000-4-2 air-gap ESD strikes on the RS-232 bus pins. An RS-232 transceiver is a type of line driver/receiver IC that converts logic-level (typically 0/3.3 V or 0/5 V CMOS/CMOS) UART signals into the ±5 V to ±15 V voltage swings required by the TIA/EIA-232-F and ITU v.28 standards. It belongs to the broader interface-IC category, sitting between the UART block of a microcontroller/SoC and a DB-9 (or equivalent) connector on the serial port. Single-channel variants like the TRS3221E serve compact, point-to-point designs where two driver/receiver channels are not needed, helping shrink BOM cost and PCB area versus 2-channel parts. Key features include 1 driver and 1 receiver per channel, a dedicated enable input for power management, an auto-powerdown mode that drops quiescent current to 1 µA typical when the cable is disconnected, and an always-active supplementary receiver that monitors the ring-indicator path even in shutdown. The device meets or exceeds the TIA/EIA-232-F and ITU v.28 electrical specifications, and is offered in industrial temperature grades of -40 °C to +85 °C. A high-speed pin-compatible upgrade, the TRSF3221E, is available where 1 Mbit/s operation is required. The TRS3221E uses an on-chip switched-capacitor voltage converter with four external 0.1 µF charge-pump capacitors. The architecture tolerates supply rails as low as 3.0 V while still generating compliant ±5 V (minimum) RS-232 output swings, which is the headline advantage over legacy 5-V-only RS-232 transceivers. Drivers are slew-rate limited to keep EMI low, and the receivers include hysteresis to reject noise on long cables. Typical applications include industrial single-port serial ports, point-of-sale terminals, handheld data collectors, factory automation equipment, medical instruments with DB-9 serial interfaces, and any embedded system that needs a robust RS-232 link from a 3.3 V or 5 V UART. Designers often pair this part with a TVS array for additional surge protection when the cable is exposed to outdoor or industrial transients. When designing with the TRS3221EIDBR, place the four charge-pump capacitors (typically 0.1 µF X7R) as close as possible to the C0+, C0-, C1+, C1- pins to minimize supply ripple. Decouple VCC with a 0.1 µF + 1 µF combination near the pin, and respect the absolute-maximum ratings on the RS-232 outputs (typically ±13.2 V) by avoiding back-drive when the IC is unpowered. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TRS3221EIRGTR - 3-5.5V RS-232 Transceiver, 250kbps, ±15kV ESD | Texas Instruments
The Texas Instruments TRS3221EIRGTR is a 3- to 5.5-V single-channel RS-232 line driver/receiver delivering 250 kbps data rate with ±15 kV IEC-ESD protection in a 16-pin VQFN (RGT) package measuring 3x3 mm with an exposed thermal pad. The device integrates one driver and one receiver, supports VCC operation from 3.0 V to 5.5 V (compatible with TTL/CMOS logic levels), and meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards. An RS-232 transceiver is a charge-pump-based interface IC that translates between TTL/CMOS logic levels (0-3.3 V or 0-5 V) and the ±5 V to ±15 V swing required by the legacy TIA/EIA-232-F serial communication standard. RS-232 transceivers belong to the broader interface IC family, which sits hierarchically between discrete level-shifters and protocol controllers (UARTs) in wired communication systems. RS-232 remains widely deployed in industrial equipment, point-of-sale terminals, medical instruments, and embedded debug ports where simplicity, point-to-point connectivity, and proven robustness outweigh the bandwidth advantages of USB or Ethernet. Key features include ±15 kV Human-Body Model (HBM) ESD protection on RS-232 pins, ±8 kV IEC 61000-4-2 contact discharge, ±15 kV IEC 61000-4-2 air-gap discharge, and an automatic powerdown feature that disables drivers when no valid RS-232 cable is detected. The on-chip dual charge pump requires only four external 0.1 µF capacitors, enabling true 5 V operation from a single 3.3 V supply without a separate ±12 V rail. The 250 kbps data rate is adequate for all standard RS-232 baud rates up to and beyond 115200 with margin to spare. The architecture combines a regulated switched-capacitor voltage doubler/inverter with a proprietary low-dropout RS-232 driver stage and a precision hysteresis receiver. ESD protection is implemented at the cable-side pins using TI's integrated silicon-controlled-rectifier (SCR) clamps. The 16-pin VQFN package's exposed pad provides a low thermal resistance path, which is useful when the part operates near the upper end of its 1 mA quiescent current budget in warm enclosures. Typical applications include industrial PLC programming ports, point-of-sale (POS) terminals, medical device serial consoles, battery-powered handhelds, and embedded debug UARTs that need robust ESD performance in the field. The TRS3221EIRGTR's small 3x3 mm footprint suits space-constrained designs such as USB-to-serial dongles, IoT gateways, and barcode scanners. When designing with this part, place the four charge-pump capacitors as close as possible to the C1+ / C1- / C2+ / C2- pins and keep the RS-232 trace lengths short to maximize ESD margin. Note that the TRSF3221E is the higher-speed (1 Mbit/s) pin-compatible alternative if 250 kbps is insufficient. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TRSF3222CPW - 3V-5.5V RS-232 Transceiver, 2/2 Drivers | TI TSSOP-20
The Texas Instruments TRSF3222CPW is a 2-driver/2-receiver RS-232 line transceiver that operates from a single 3.0V to 5.5V supply in a 20-pin TSSOP package. It supports data rates up to 1 Mbit/s and accepts 5-V logic inputs when powered from a 3.3V rail, making it ideal for mixed-voltage system designs. A line transceiver is an interface device that bridges a logic-level UART (universal asynchronous receiver/transmitter) on a host microcontroller with the RS-232 standard, which swings between +12V and -12V on the bus side. It sits within the Interface IC hierarchy (RS-232 transceiver -> line transceiver -> interface IC -> integrated circuit) and converts TTL/CMOS logic levels to TIA/EIA-232-F compliant voltage levels while protecting the host from ESD events on the cable side. The TRSF3222CPW integrates a dual charge-pump that generates the required +5.5V and -5.5V rails from a single 3.3V supply using four small 0.1 uF external capacitors. Standby current is typically 1 uA, supporting low-power portable designs. The receivers remain active in shutdown, allowing wake-up characters to be detected without waking the host. ESD protection exceeds +/-15 kV HBM on the bus pins. Typical applications include industrial point-of-sale terminals, factory automation equipment, portable diagnostic instruments, and battery-powered barcode scanners where 3.3V logic must communicate with legacy RS-232 peripherals. The wide 3.0V-5.5V supply range also makes the part suitable for USB-to-serial bridges and embedded computing modules. When designing with this device, place the four charge-pump capacitors as close to the IC as possible to minimize loop inductance. The TSSOP-20 footprint requires standard surface-mount assembly with a maximum reflow temperature per JEDEC J-STD-020. Decouple VCC with a 0.1 uF ceramic plus a bulk tantalum if the supply impedance is high.
TS3A27518ERTWR - 6-Ch 2:1 Analog Mux, 240MHz | Texas Instruments
The Texas Instruments TS3A27518ERTWR is a bidirectional 6-channel 1:2 (SPDT) analog multiplexer/demultiplexer with 6.2 ohm on-resistance, 240 MHz bandwidth, and integrated IEC 61000-4-2 ESD protection, housed in a 24-pin WQFN (4x4 mm) package operating from a 1.65 V to 3.6 V single supply. An analog multiplexer is a signal-routing semiconductor that selects one of several input channels and connects it to a common output, functioning as a digitally controlled switch for both analog and digital signals. Within the signal-chain hierarchy, it sits between passive switches and full crosspoint matrices, and belongs to the broader family of interface and analog switch ICs used in power management and signal conditioning subsystems. Key features include low 6.2 ohm typical on-resistance for minimal signal attenuation, 21.5 pF typical switch capacitance, up to 240 MHz bandwidth for high-speed rail-to-rail signal handling, and -62 dB crosstalk and OFF isolation. The device also provides isolation in power-down mode (VCC = 0 V), and 1.8 V logic-threshold-compatible control inputs that allow direct interfacing with low-voltage microcontrollers. Architecturally, the TS3A27518E uses two control pins, each simultaneously controlling three 1:2 multiplexer sections, plus an enable pin that places all outputs in high-impedance mode. Integrated ESD cells rated to IEC 61000-4-2 on the signal pins eliminate the need for external TVS diodes in USB and port-protection designs, and the device is qualified for automotive applications. Typical applications include USB 2.0 high-speed signal switching, audio jack and headset detection, battery-powered portable equipment, and general-purpose analog signal routing in industrial systems. A key design consideration is on-resistance flatness across the signal range: at lower VCC the Ron rises, so budget for insertion loss at 1.65 V operation, and keep stub lengths short to preserve the 240 MHz bandwidth. This page adds value beyond the datasheet by synthesizing distributor pricing tiers, drop-in alternatives, cross-reference data, and practical design notes in one reference.
TS3A44159RGTR - 0.45Ω Quad SPDT Analog Switch | TI
The Texas Instruments TS3A44159RGTR is a 0.45-Ω quad-channel single-pole double-throw (SPDT) analog switch housed in a 16-pin VQFN (RGT) 3x3 mm package. Operating from 1.65 V to 4.3 V, it delivers low on-state resistance with excellent Ron matching across four independent 2:1 multiplexers and supports bidirectional signal flow on every channel. Two logic-level control inputs select between the NO/NC paths of all four switches simultaneously, simplifying firmware-driven signal routing. An analog switch is a solid-state semiconductor device that routes analog or digital signals between two or more terminals under the control of a logic-level signal. It belongs to the analog switch and multiplexer family, which sits inside the broader interface IC category of integrated circuits. Quad SPDT switches are commonly used to swap between two sources on four channels at once, an arrangement also called a 2-channel DPDT function in this device. Key features include 0.45 Ω typical on-state resistance, 50 pA typical switch leakage, break-before-make switching to prevent momentary channel cross-connection, and a -3 dB bandwidth greater than 35 MHz. The control inputs are 1.8 V logic-compatible, while supply operation extends from 1.65 V to 4.3 V. ESD protection on the switch pins exceeds 2000 V per the HBM model. Architecturally the part uses CMOS transmission gates with integrated charge-pump-derived well biasing, enabling low Ron and rail-to-rail signal swing on a single positive supply. Ron flatness is held tight across the input common-mode range, which preserves harmonic distortion performance in audio paths. The device draws only microamps of quiescent current, which is essential for battery-powered systems. Typical applications include portable audio routing between headphone jack and Bluetooth receiver, USB 2.0 high-speed signal switching, SPI/I²C bus multiplexing, smartphone audio codec path selection, and PDA or portable media player source switching. Industrial uses include 4-wire resistance measurement multiplexing and analog front-end signal routing. When designing with this part, ensure that the logic-high level on IN1/IN2 exceeds 0.85 x VDD and the logic-low is below 0.15 x VDD to guarantee full CMOS-level switching. Place 0.1 µF bypass capacitors within 5 mm of the VDD pin to keep digital control noise out of the analog path. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical PCB layout guidance not found in the manufacturer datasheet alone.
TS3A4741DCNR - 0.9Ω Dual SPST Analog Switch | TI SOT-23-8
The Texas Instruments TS3A4741DCNR is a 0.9 Ω low on-resistance, low-voltage, single-supply, dual single-pole single-throw (SPST) analog switch housed in an 8-pin SOT-23 (DCN) package. It integrates two independent normally open (NO) switches, each with a 1:1 (SPST) topology, designed for 1.8 V logic compatibility when operated from a single 3 V supply rail. What is an SPST analog switch? An SPST (Single-Pole Single-Throw) analog switch is a solid-state semiconductor device that routes analog signals by electrically connecting or isolating one signal path. The TS3A4741 belongs to the broader category of analog switches and multiplexers, a subfamily of interface ICs used for signal routing in mixed-signal and low-power systems. Compared with mechanical relays, analog switches offer far faster switching speeds, lower power, smaller PCB area, and no mechanical bounce, at the cost of lower absolute voltage and current handling. Key specifications include a 0.9 Ω typical on-resistance (Ron), 1.8 V CMOS-compatible digital logic inputs, rail-to-rail analog signal handling, very low quiescent current, and integrated ESD protection. The two switches operate completely independently, allowing them to be used as separate signal paths or as complementary paths in a single function. The device is fabricated in a CMOS process and supports fast switching speeds, low off-leakage current, and bidirectional analog signal flow. Its small SOT-23-8 footprint and 1.8 V logic compatibility make it well suited to portable and battery-powered designs. Typical applications include audio signal routing in portable devices, switching between two sensors in handheld instruments, power rail multiplexing in low-power systems, and general-purpose signal gating in test equipment and consumer electronics. When designing with the TS3A4741, ensure the analog signal stays within the supply rails to avoid distortion or excessive leakage, and add 0.1 µF decoupling close to VCC. For applications requiring normally closed (NC) switches, use the pin-compatible TS3A4742. This page synthesizes verified distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TS3A4751PWR - 0.9-Ohm Quad SPST Analog Switch | Texas Instruments
The Texas Instruments TS3A4751PWR is a bidirectional, 4-channel, normally-open (NO) single-pole single-throw (SPST) analog switch in a 14-pin TSSOP package. It operates from a single 1.6V to 3.6V supply, delivers a maximum on-state resistance of 0.9 ohm at a 3V supply, and handles rail-to-rail analog signals with fast switching speeds and very low quiescent power. An analog switch is an IC that routes or isolates analog signal paths under digital control. Within the signal-routing hierarchy, the TS3A4751 belongs to the SPST switch family, a subset of analog switches and multiplexers used in signal conditioning and power-management systems. Key features include 0.9-ohm maximum Ron at 3V (1.5-ohm maximum at 1.8V), Ron flatness of 0.4-ohm maximum at 3V, and Ron matching of 0.05-ohm maximum at 3V. The 1.8-V CMOS-compatible digital inputs allow direct interface with low-voltage GPIO when using a 3-V supply, eliminating level-shift circuitry. The device is available in 14-pin TSSOP (PW), 14-pin VQFN (RGY), and 2x2-mm micro X2QFN (RUC) packages. The low Ron supports power-switching and low-distortion signal paths, while rail-to-rail operation preserves full signal swing on 1.8V, 2.5V, and 3.3V rails. Typical applications include low-voltage power switching, audio signal routing in portable devices, battery-powered test points, and general-purpose signal muxing in smartphones, tablets, and industrial sensing modules. Its normally-open configuration makes it suitable for fail-safe, default-disconnected paths. When designing, remember that Ron rises at lower supply voltages: at a 1.8-V supply the maximum Ron is 1.5 ohm, so account for insertion loss and on-resistance flatness in high-fidelity or precision-current paths. According to TI datasheet, the TS3A4751 is the NO-switch counterpart within the TI low-voltage quad SPST family.
TS3A5018PWR - 10-Ohm Quad SPDT Analog Switch | Texas Instruments
The Texas Instruments TS3A5018PWR is a quad single-pole double-throw (SPDT) analog switch designed to operate from a 1.8V to 3.6V supply in a 16-pin TSSOP (PW) package rated from -40C to +85C. It handles both digital and analog signals, and signals up to V+ can be transmitted in either direction. An analog switch is a semiconductor device that selectively connects or disconnects an analog signal path under digital control. It is a fundamental signal-routing building block in the broader family of multiplexers, demultiplexers, and interface ICs. Analog switches provide a low-resistance path when ON and a high-impedance path when OFF, replacing bulky mechanical relays in audio/video routing, data acquisition, and communication systems. Key features include the wide 1.8V to 3.6V operating range (ideal for battery-powered and 3.3V systems), low 10-ohm ON-state resistance with excellent channel-to-channel matching, and low charge injection that minimizes glitches during switch transitions. All four SPDT switches share a common enable function so the entire device can be disabled to reduce power consumption. The TS3A5018 is built on TI CMOS process technology, providing low quiescent power dissipation and high reliability. Bidirectional signal flow means either of the two throw terminals can serve as the port, essential for multiplexing and demultiplexing on the same hardware. Turn-on and turn-off times are fast, supporting high-speed signal routing in data converters and communication interfaces. Typical applications include audio signal routing in portable devices, battery-powered data acquisition front ends, communication interface switching, and test equipment signal multiplexing. The low power consumption and wide supply range make it well suited for portable and industrial designs. Design consideration: the 10-ohm ON resistance introduces series attenuation in high-impedance circuits, so prefer low-impedance loads or buffer the switched node. Place a 0.1uF decoupling capacitor close to the V+ pin, and use the enable pin in battery designs to cut standby current when switching is idle.
TS3USB3000MRSER - DPDT USB 2.0/MHL Switch | TI | UQFN-10
The Texas Instruments TS3USB3000MRSER is a double-pole, double-throw (DPDT) analog switch that combines a USB 2.0 High-Speed (480 Mbps) switch and a Mobile High-Definition Link (MHL) switch in a single 10-pin UQFN (RSE) package measuring 1.5 mm × 2.0 mm. It supports a -3 dB bandwidth of 6.1 GHz on the MHL path and operates from a 2.3 V to 4.8 V supply. The device is designed to share a common USB or Micro-USB connector between USB 2.0 data and MHL video signals in mobile phones, tablets, and portable media devices. A USB switch IC is a special-purpose analog multiplexer that routes high-speed differential signals between a single downstream port and two upstream paths (host vs. MHL sink). In the hierarchy of power management and signal routing components, this part belongs to the USB interface IC category, sitting between the connector and the application processor. DPDT switches such as the TS3USB3000 are critical because they must pass 480 Mbps USB signals and up to 3 GHz MHL content with minimal insertion loss, low crosstalk, and high off-isolation. Key features of the TS3USB3000 include low on-resistance (Ron) on the USB data paths, low on-capacitance (Con) for high-bandwidth signal transmission, 1.8-V-compatible select pins for direct GPIO control from a mobile processor, and a quiescent current of approximately 5 uA. The wide supply range (2.3 V to 4.8 V) covers both 3.3 V system rails and the typical 3.8 V Li-ion battery range without additional regulation. The small 1.5 mm × 2 mm UQFN footprint makes it ideal for space-constrained mobile applications. The TS3USB3000 uses a charge-pump-less architecture with simple CMOS logic-level select inputs. The two select pins (S1 and S0 per TI documentation) determine whether the common port is routed to the USB path or the MHL path. Internal ESD protection on the signal pins improves robustness against connector-level transients, which is critical for hot-plug consumer electronics. Typical applications include smartphones and tablets with MHL-enabled video output, automotive infotainment systems that mirror mobile content via USB or MHL, portable media players, and USB/MHL dongles. The wide bandwidth also makes it suitable for any system needing to multiplex two high-speed differential pairs onto a single connector. When designing with this part, place the device as close as possible to the USB/MHL connector to minimize stub lengths and signal-integrity degradation. Use controlled-impedance differential routing (90 ohm) on both sides of the switch, and provide adequate ground stitching vias along the signal path to maintain return-current continuity. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes that are not aggregated in any single manufacturer datasheet or distributor catalog page.
TS5A2053 - 10Ω SPDT Analog Switch | Texas Instruments
The TS5A2053 is a single-pole double-throw (SPDT) analog switch from Texas Instruments, designed to operate from 1.65 V to 5.5 V. It can handle both digital and analog signals, and signals up to V+ can be transmitted in either direction. The device features a low ON-state resistance of 10Ω (typical) and includes an enable pin for power management. It is available in the 8-pin VSSOP (DCU) package, making it suitable for space-constrained applications. An analog switch is a semiconductor device that selectively connects or disconnects an analog signal path based on a digital control signal. It is a fundamental building block in signal routing, multiplexing, and sample-and-hold circuits. Analog switches are part of the broader category of interface ICs, which manage signal integrity and connectivity between different subsystems in electronic systems. Key features of the TS5A2053 include a low ON-state resistance of 10Ω, which minimizes signal attenuation, and a wide operating voltage range from 1.65 V to 5.5 V, allowing compatibility with various logic levels. The device also offers fast switching speeds, with a typical turn-on time of 20 ns and turn-off time of 15 ns, making it suitable for high-frequency signal routing. The enable pin allows the switch to be disabled, reducing power consumption in standby modes. Technically, the TS5A2053 uses a CMOS process that provides low power consumption and high ESD robustness. The device has a bandwidth of 300 MHz, enabling it to pass high-frequency signals with minimal distortion. The ON-state resistance is flat across the input voltage range, ensuring consistent performance. The device also features break-before-make switching, preventing momentary short circuits between channels. Typical applications include audio signal routing, data acquisition systems, and test equipment. In audio systems, the low ON-state resistance and high bandwidth ensure minimal signal degradation. In data acquisition, the switch can route analog signals to an ADC, with the enable pin allowing power saving when not in use. In test equipment, the TS5A2053 can be used for signal multiplexing and routing. When designing with the TS5A2053, it is important to consider the ON-state resistance and its effect on signal integrity. For high-frequency signals, the parasitic capacitance of the switch can cause signal attenuation, so proper PCB layout and termination are recommended. Additionally, the enable pin should be tied to a defined logic level to avoid floating inputs.
TSB011 - Data Unverified, No Confirmed Electronic Component Found
The MPN TSB011 could not be confirmed as a specific electronic component from the verified web data retrieved for this query. Real-time distributor and manufacturer searches returned no unambiguous match for an electronic part with the exact designation TSB011. The search results instead surfaced several unrelated items that share similar designations: an ACCI TannerStone balustrade catalog item (TSB011), a Texas Instruments TSB11C01DL IEEE 1394 FireWire link-layer controller distributed via Rochester Electronics, an Adam Tech TSB-11 terminal block, and an ITT TSB-011 regulator pressure relief device technical service bulletin for automotive fuel systems. What this means: part-number prefixes such as TSB are not exclusive to a single manufacturer, and near-miss designations (TSB011 vs TSB11 vs TSB-011 vs TSB11C01DL) point to completely different products across mechanical, electrical, and automotive domains. Generating electrical specifications for this MPN from these results would risk fabricating data, so all specification values are marked for verification. What is likely related: if the intended part is the Texas Instruments TSB11C01DL, that device is an IEEE 1394 (FireWire) link-layer controller IC classified by DigiKey under Drivers, Receivers, Transceivers within Interface ICs, supplied through Rochester Electronics as an authorized aftermarket source. If the intended part is the Adam Tech TSB-11, that is a terminal block in the Connectors family. Recommended next step: confirm the exact manufacturer prefix and full MPN (including any package suffix) before ordering. This page will be updated once verified datasheet data is available.
TSI384-133ILV - PCIe to PCI-X Bridge 256-BGA | Renesas Electronics
The Renesas TSI384-133ILV is a single-lane PCI Express (PCIe) to PCI/PCI-X bridge IC housed in a 256-ball PBGA (17x17 mm) package. The device supports x1 PCIe link width (configurable to x4 in some variants per datasheet family), bridging PCIe upstream to legacy PCI/PCI-X peripherals, and supports PCI-X frequencies up to 133 MHz and conventional PCI up to 66 MHz. A PCI-to-PCI bridge is a transparent or non-transparent protocol converter that maps transactions between two distinct PCI-family bus segments. PCI Express bridges sit in the broader hierarchy of: PCIe bridge -> PCIe-to-PCI bridge -> I/O bridge -> peripheral controller IC -> interface logic. Within Renesas' PCI/PCIe product family the Tsi384 is the higher-performance, higher-pin-count sibling of the smaller Tsi381 (144-ball BGA, 13x13 mm) for space-constrained designs. Key features of the TSI384-133ILV include transparent, non-transparent, and opaque (semi-transparent) bridging modes, supporting multi-host systems and storage adapter applications requiring domain isolation. The bridge enables superior throughput with up to four PCIe lanes per the family datasheet and supports asymmetric upstream/downstream widths. Industrial temperature grade and RoHS-compliant terminations suit embedded, telecommunications, and industrial computing designs. Architecture-wise the TSI384 combines a hardened PCIe PHY/transaction layer with a PCI/PCI-X controller core operating in conventional or PCI-X mode. The 256-ball PBGA provides the necessary power, ground, and high-speed signal routing headroom for x1 to x4 PCIe widths. Operating supply voltage is 1.2 V core plus I/O rails, supplied via multiple pins. Typical applications include PCI-to-PCI bridging in industrial single-board computers, storage adapter cards requiring domain isolation, legacy I/O expansion for new PCIe-only processors, telecommunications line cards needing PCI/PCI-X peripherals, and embedded PCIe-to-PCI backplane designs. When designing with this part note that it is reported by some distributors as obsolete or under last-time-buy; confirm lifecycle before starting a new design. Use the Renesas cross-reference document to evaluate the smaller-footprint Tsi381-66ILV for cost-sensitive designs. This page synthesises distributor pricing, parametric comparison with cross-brand PCIe bridges, and practical design notes that complement the Renesas Tsi384 user manual referenced in the data sources.
TUSB2040AN - 4-Port USB 1.0 Hub Controller | Texas Instruments
The Texas Instruments TUSB2040AN is a 3.3 V CMOS four-port Universal Serial Bus hub controller with an optional serial EEPROM interface, supplied in a 28-pin PDIP package. It provides up to four downstream USB ports and supports USB specification version 1.0. The TUSB2040AN belongs to the USB interface controller hierarchy, combining host-interface, port-management, and downstream-port switching functions in one integrated circuit. A USB hub controller is a semiconductor that manages a shared USB connection and distributes it among multiple downstream peripherals. It sits between a USB host and attached devices, supporting device attachment, enumeration, and port routing. The TUSB2040A device family was designed for USB 1.0 systems in which up to four downstream ports are required and an optional serial EEPROM can provide configuration or hub-specific information. The principal verified characteristics of the TUSB2040AN are its four downstream ports, 3.3 V CMOS operation, USB 1.0 support, optional serial EEPROM interface, and 28-pin PDIP package. Its parallel host-side data and control paths are intended for conventional low-speed and full-speed Universal Serial Bus designs. The integrated hub function reduces the number of separate discrete interface components required around a host port. The TUSB2040A architecture includes separate downstream differential data connections for the four hub ports and an upstream connection to the USB host. Configuration information can optionally be supplied through a serial EEPROM, allowing a board designer to support application-specific hub behavior without relying entirely on fixed internal configuration. Exact electrical limits, timing values, and operating-temperature data must be taken from the manufacturer datasheet. Typical uses include legacy USB keyboards, mice, printers, industrial data-acquisition equipment, educational laboratory computers, and embedded host systems that need to expand one host connection into four downstream ports. A prototype can also be used to verify USB enumeration, peripheral attachment, and power-management behavior before the PCB layout is released. PCB design should preserve short USB differential traces, continuous ground references, controlled impedance, and proper separation from noisy switching nodes. The optional serial EEPROM interface requires stable address, clock, and data routing, while unused inputs and outputs must follow the manufacturer’s termination and connection guidance. Because the verified search results do not provide a complete pin table or detailed application circuit, those items should be confirmed against the manufacturer documentation before layout. This product record combines the verified distributor and datasheet-search information with structured engineering guidance. It also explicitly identifies unavailable pricing, lifecycle, pinout, and substitution data instead of presenting unverified substitutions as drop-in alternatives.
TUSB2040N - 4-Port USB 1.0 Hub Controller | Texas Instruments
Texas Instruments TUSB2040N is a four-port USB 1.0-compatible hub controller with integrated USB transceivers, per-port power switching, and overcurrent reporting. The device supports four downstream ports and two power-source arrangements: self-powered mode and bus-powered mode. It is packaged as a 28-pin PDIP according to the retrieved distributor records. The verified source identifies the TUSB2040 family as a universal serial bus hub controller and does not provide additional electrical timing, current, or temperature values. A USB hub controller is an interface IC that connects one upstream USB port to multiple downstream ports, allowing peripherals to share a host controller. Within the hierarchy of USB interface devices, transceiver, hub controller, interface IC, and semiconductor, the TUSB2040N provides the logic and physical connectivity for expanding USB 1.0 equipment. Its integrated transceivers reduce the need for separate USB transceiver circuitry on the hub board. The principal verified features are four downstream ports, integrated USB transceivers, USB 1.0 compliance, self-powered operation, bus-powered operation, per-port power switching, overcurrent reporting, per-port or ganged power modes, and suspend support. These functions suit hubs where the host must enumerate multiple peripherals and where each downstream port needs controllable power. The retrieved distributor listing describes the part as an interface controller, while the family datasheet result specifically identifies four-port USB hub functionality. The TUSB2040N is intended for USB 1.0 hub designs, including peripheral expansion, legacy computer interfaces, industrial equipment, and embedded systems that use multiple low-speed, full-speed, or compatible USB devices. Its architecture places port power management close to the USB interface, allowing the design to report overcurrent conditions and manage downstream power distribution. Exact propagation delays, operating voltage, maximum downstream current, and USB data-rate details are not present in the verified web data and must be confirmed from the manufacturer datasheet before a new design is released. For implementation, follow the TUSB2040 family datasheet for pin assignments, transceiver connections, power-source selection, capacitor values, and port-power topology. Pay particular attention to upstream and downstream USB differential routing, ground-plane continuity, and current-limit behavior. Because the verified record lists a PDIP package, verify physical dimensions and pin orientation against the actual manufacturer drawing rather than relying only on distributor metadata. This page combines the verified distributor and datasheet-search records with clearly marked missing-data fields. It does not infer prices, lifecycle claims, pin names, or electrical limits that were not supplied. Buyers should request a quotation for current commercial availability and confirm the exact package, ordering suffix, and production status with Texas Instruments before committing a design to production.
TUSB2043VF - 4-Port USB Hub with EEPROM | Texas Instruments
Texas Instruments TUSB2043VF is a four-port USB hub controller with an optional serial EEPROM interface, a 48 MHz oscillator or clock source, and a 32-pin LQFP package. It belongs to the USB interface-controller hierarchy: USB hub controller, USB interface IC, interface integrated circuit, and semiconductor. Its verified device description identifies support for four downstream USB ports while allowing an optional serial EEPROM connection for configuration or device-specific control data. The TUSB2043VF uses a 48 MHz oscillator or clock source as its input clock, as stated in the verified manufacturer-related listing. Because this legacy hub controller depends on a relatively high-frequency clock, PCB layout should preserve short clock paths, provide clean return paths, and decouple supply pins close to the device. The 32-LQFP package offers enough perimeter pins for USB data, power, clock, configuration, and optional EEPROM connections, although a complete verified pin map is not included in the supplied data. A major engineering consideration is USB signal integrity. Each enabled USB data path must be routed as a controlled-impedance differential pair on a multilayer PCB, with minimal stubs and carefully planned layer transitions. Power-distribution inductance can cause transient voltage excursions when a downstream device is attached or removed, so bulk and local decoupling should be evaluated together. The optional serial EEPROM interface adds an additional bus that must be routed with suitable signal-integrity practices. Typical uses include legacy USB hubs, USB expansion equipment, computer peripherals, industrial data-acquisition systems, and embedded host or peripheral designs that require four downstream ports. Engineers should confirm host compatibility, downstream current budget, USB speed, enumerator behavior, electrical characteristics, and mechanical footprint against the manufacturer datasheet before using this obsolete device in a new production design. The principal design tradeoff is lifecycle risk. A distributor result explicitly describes TUSB2043VF as obsolete, while another distributor lists it for purchase or RFQ. For new designs, compare current-generation USB hub controllers unless an existing platform specifically requires the TUSB2043VF footprint and behavior. This page consolidates the verified product description, distributor availability references, package information, lifecycle indication, and explicit data gaps. It also separates known facts from missing parameters so engineers can assess whether the legacy controller remains appropriate without mistaking unverified specifications for manufacturer data.
TUSB2046BVFR - 4-Port USB 2.0 Full-Speed Hub | TI
The Texas Instruments TUSB2046BVFR is a 4-port USB 2.0 full-speed (12 Mbps) hub controller with one upstream port and four downstream ports, implemented as a pure state-machine (no CPU core) in a 32-pin LQFP (VF, 7x7 mm) package. It operates from a single 3.0 V to 3.6 V supply, drawing approximately 40 mA, over a 0 C to 70 C commercial temperature range. A USB hub controller is a dedicated interface IC that expands a single USB upstream connection into multiple downstream ports, handling enumeration, transaction translation at the protocol level, and per-port power management. Within the system hierarchy it sits in the connectivity layer: interface IC > USB controller > hub controller, alongside host controllers and device controllers in a complete USB subsystem. Key features include full compliance with the USB specification as a full-speed hub (TI design TID #30220231), integrated USB transceivers that eliminate external PHY components, and an optional serial EEPROM interface for storing customized VID/PID and configuration data. Support for Win95/DOS-style operation and a pure hardware state-machine architecture reduce firmware complexity to zero - the hub enumerates automatically on plug-in. The TUSB2046B is fabricated on a low-power 3.3 V ASIC CMOS process. Because there is no embedded microcontroller, no firmware development, flash programming, or in-circuit emulator is required, which shortens qualification cycles and removes a whole class of field-update failure modes. The device supports individual downstream port power switching and overcurrent status inputs for compliant bus-powered and self-powered hub designs. Typical applications include standalone USB hubs, monitor and keyboard-display hubs, industrial and medical equipment USB expansion, and adding USB ports to embedded systems built around host processors without native hub capability. For design, provide 0.1 uF decoupling at each supply pin, strap configuration pins (or fit the optional EEPROM) for power-mode selection, and size port power switches per downstream port load. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TUSB2046BVFRG4 - 4-Port USB 2.0 Full-Speed Hub | Texas Instruments
The Texas Instruments TUSB2046BVFRG4 is a 4-port USB 2.0 full-speed hub controller operating at 12 Mbps from a 3.3 V supply, housed in a 32-pin LQFP (7x7 mm) package with an optional serial EEPROM interface and a 0C to +70C commercial operating range. A USB hub controller is an interface IC that expands a single upstream USB port into multiple downstream ports, handling enumeration, transaction translation at the protocol level, and port power management. It sits within the USB device hierarchy between the host controller and downstream peripherals, forming a sub-family of the broader USB interface and connectivity IC class within semiconductor interface products. Key features include one upstream port and four downstream ports compliant with the USB 2.0 specification at full speed (12 Mbps), support for both low-speed (1.5 Mbps) and full-speed downstream devices, an optional serial EEPROM interface for storing vendor ID / product ID configuration data, and overcurrent detection inputs with power-switch control outputs for per-port or ganged power switching. Implementation with a digital state machine instead of an embedded microcontroller eliminates firmware development and reduces BOM complexity. Technical depth: because the TUSB2046B is a pure hardware state-machine design, enumeration latency is deterministic and there is no firmware to qualify, update, or corrupt. The 3.3 V CMOS core with integrated 3.3 V regulator support keeps external components minimal, typically requiring only a 6 MHz or 48 MHz clock source, bypass capacitors, and the external power switches for downstream VBUS. Typical applications include PC monitor hubs, docking stations, industrial panel USB expansion, printer and multifunction peripheral front panels, and embedded systems requiring additional USB ports from a single host connection. The 12 Mbps full-speed rating suits HID devices, flash drives, and instrumentation rather than high-bandwidth video or mass-storage arrays. Design consideration: budget downstream VBUS power carefully - each downstream port may supply up to 500 mA at 5 V per the USB specification, so external power MOSFET switches and overcurrent sensing resistors must be sized for the aggregate load, and the OVERCURRENT inputs must be wired to the correct power-switch pins. This page synthesizes distributor pricing context, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet alone.
TUSB2070PT - 7-Port USB 1.0 Hub Controller | Texas Instruments
The Texas Instruments TUSB2070PT is a CMOS 7-port USB hub controller that conforms to USB Specification Version 1.0, supplied in a 48-pin LQFP (PT) surface-mount package with a 0 °C to +70 °C commercial operating temperature range. According to the manufacturer datasheet, the device provides up to seven downstream ports from a single upstream connection, consolidating multiple legacy USB peripherals behind one host port. A USB hub controller is a type of USB interface controller: it sits between a host and one or more downstream devices, managing enumeration, power distribution, and data traffic across the bus. In the product-type hierarchy, a USB hub controller belongs to interface controllers, which are a subset of integrated circuits used for signal and protocol bridging. In an end system, the hub controller provides the physical fan-out layer between a single USB port and several peripherals, sitting below the host controller and above the physical USB transceiver layer. Key characteristics of the TUSB2070PT include support for up to seven downstream ports, full-speed operation under USB Specification 1.0 rules, a monolithic CMOS implementation, and a single upstream port connection for the host link. The 48-pin LQFP (PT) body gives generous pin count for port-level control and status signalling, while the industrial-temperature 0 °C to +70 °C range suits commercial and light-industrial equipment. Detailed electrical ratings such as supply voltage, I/O current, and internal oscillator tolerance are not stated in the retrieved data and must be confirmed against the manufacturer datasheet. Architecturally, the device implements the split-transaction, single-master USB 1.0 protocol stack internally, including host-controller interface signalling toward the upstream port and per-port transceiver interfacing toward downstream ports. It is a legacy architecture: modern designs normally use USB 2.0 high-speed hubs with integrated PHY and charge-pump regulators, so the TUSB2070 remains most relevant where a legacy USB 1.0 host must be expanded without changing the upstream device class. Typical uses include legacy personal-computer and embedded host systems needing additional full-speed USB ports, industrial data-acquisition panels, point-of-sale and print peripherals, and test benches that replicate USB 1.0 topologies. Because it is an established, widely supported part with a long service history, it is frequently found in repair and legacy-platform maintenance programs. Two design considerations matter most. First, the device is no longer the newest Texas Instruments 7-port hub: the manufacturer lists the TUSB2077A, also in a 48-LQFP package, as the replacement, so new designs should start there. Second, a 48-LQFP body demands careful decoupling and ground-plane continuity to keep USB signal integrity within the 1.0 specification budget. This page consolidates distributor availability signals, a drop-in replacement analysis for the 48-LQFP 7-port hub footprint, lifecycle guidance, and practical design notes that are not gathered together in a single manufacturer datasheet.
TUSB2136PM - 2-Port USB 2.0 Hub Controller | Texas Instruments
Texas Instruments TUSB2136PM is a USB 2.0 two-port hub controller with an integrated general-purpose function controller, supplied in a 64-LQFP surface-mount package measuring 10 mm by 10 mm. It operates from a 3 V to 3.6 V supply and is specified for a 0 °C to 70 °C ambient operating range. The component is listed as active and is intended for USB interface and hub-controller designs. A USB hub controller is an interface integrated circuit that manages a USB host connection and coordinates attached USB devices. Within the product hierarchy, a USB 2.0 hub controller is an interface IC, a USB interface device, and a semiconductor. This TUSB2136 variant combines two-port hub control with a general-purpose function controller, allowing the hub function and device-side control logic to be consolidated within one package. The principal verified features are two USB 2.0 ports, a 3 V to 3.6 V operating-supply range, and integrated general-purpose function control. The controller is packaged in a 64-pin LQFP measuring 10 mm by 10 mm, providing a surface-mount implementation for compact USB equipment. The operating temperature range of 0 °C to 70 °C identifies it as a commercial-temperature option rather than an explicitly automotive-qualified or extended-temperature device. The TUSB2136PM combines a compound USB hub function with an embedded general-purpose 8052 MCU, as identified in the supplied datasheet result. This architecture is useful when downstream equipment needs local device handling, configuration logic, or peripheral control in addition to standard USB hub behavior. Its consolidated approach can reduce the number of discrete interface components required around a USB connection, although the complete implementation must be validated against the manufacturer datasheet and reference design. Typical uses include USB connection hubs, computer peripherals, docking equipment, and embedded USB interface products. Its two-port configuration is appropriate for systems that need to expose multiple USB connections through one upstream USB link. Integration of the general-purpose function controller is especially relevant to designs in which hub management must coexist with vendor-specific control behavior or device-specific handling. Designers should pay particular attention to USB signal routing, supply decoupling, and the exact pin assignments shown in the manufacturer documentation. Because the verified sources do not provide the complete pin table, crystal requirements, programming interface, USB transceiver details, or decoupling values, those items must be obtained from the official datasheet before schematic capture. No automotive qualification or regulatory status beyond the supplied active-status information should be inferred. This page combines the verified USB version, port count, supply range, package, temperature range, lifecycle status, and distributor availability information with practical integration guidance. It also distinguishes documented characteristics from unknown electrical details and avoids presenting unverified pinout or replacement claims as drop-in-compatible alternatives.
TUSB2140BN USB 1.1 4-Port Hub Controller | Texas Instruments
The Texas Instruments TUSB2140BN is a USB 1.1 interface controller for four-port USB hub applications, supplied in a 40-pin DIP package measuring 0.600 inches, or 15.24 mm, across. The device is identified by distributors as a USB interface bus controller with integrated transceiver characteristics, and it is associated with an I2C microcontroller interface in supplier documentation. The verified product information confirms a through-hole DIP format, commercial temperature grade, and 40 terminals. It also confirms availability through multiple distributors, including 6,048 pieces reported by Heisener and a unit price of $6.4513 as of 2026-10-30. The TUSB2140BN is therefore positioned as a legacy USB hub controller for systems requiring four downstream USB ports rather than a general-purpose USB interface transceiver. Its 40-DIP package favors prototype boards, legacy industrial equipment, and expansion systems where through-hole assembly is acceptable. The supplied listings do not provide a complete official electrical table, exact pin assignments, transfer-rate details beyond USB 1.1, or a current manufacturer lifecycle statement. Those parameters remain identified as data needed rather than being inferred from similar devices. A practical design review should therefore begin with the official TUSB2140B datasheet, especially for D+/D- routing, power-switching requirements, crystal or clock connections, I2C address programming, and termination requirements. In a USB hub design, the controller manages downstream-port enumeration and shared upstream-bus behavior, while external power-distribution and protection components determine how safely multiple peripherals can be connected.
TUSB2140N - 4-Port USB 2.0 Hub Controller | Texas Instruments
Texas Instruments TUSB2140N is a 4-port USB 2.0 hub controller with embedded function, a maximum clock frequency of 48 MHz, I2C bus compatibility, and a 40-pin through-hole DIP package. It is designed for industrial USB hub equipment requiring multiple downstream ports and centralized control. The verified sources identify TUSB2140N as the original 40-PDIP member of the TUSB2140 family and note that it was replaced by TUSB2046B. A USB hub controller is an interface IC that manages traffic between one upstream USB host connection and multiple downstream USB ports. Within the product hierarchy, it is a USB interface controller, bus controller, interface IC, and semiconductor. By organizing USB connectivity and exposing configuration functions through a compatible control bus, this type of device reduces the amount of discrete logic required in a multiport USB product. The TUSB2140N provides four downstream hub ports, operates up to 48 MHz, supports I2C compatibility, and is available in a 40-terminal rectangular DIP package. The verified distributor data classifies it as an industrial-temperature component with through-hole terminals. These characteristics make it relevant to legacy industrial USB hubs, embedded USB expansion equipment, and systems designed around the original TUSB2140 interface rather than newer hub controllers. Technically, the device combines USB host-interface management and an embedded function in one controller. Its 48 MHz maximum operating frequency supports the clocking requirements associated with this USB 2.0 hub-controller generation, while I2C compatibility offers a practical path to configuration and supervisory control. The 40-pin DIP format favors through-hole assembly and repairability, but it consumes considerably more board area than contemporary surface-mount hub controllers. Typical applications include industrial USB hubs, embedded test equipment, peripheral aggregation systems, legacy USB expansion cards, and OEM products that retain the TUSB2140 architecture. Because the part is an older through-hole design, engineers should also assess modern surface-mount alternatives or the indicated TUSB2046B successor when new PCB area, sourcing, or lifecycle constraints favor redesign. The primary design consideration is lifecycle and availability. Verified marketplace data states that TUSB2140N was replaced by TUSB2046B, while current stock and pricing are offered through brokers and distributors. For new production, confirm lifecycle status, exact electrical compatibility, and pin-level equivalence before substituting any successor; a USB hub change can affect enumeration, power management, and downstream-port behavior. This page consolidates verified distributor specifications, the replacement relationship, source links, and engineering selection guidance. It distinguishes documented TUSB2140N attributes from unavailable parameters, helping procurement and design engineers make a grounded legacy-support or migration decision.
TUSB2551PW - USB 2.0 Half Transceiver | Texas Instruments
Texas Instruments TUSB2551PW is a single USB 2.0 half-rate transceiver supporting full-speed operation up to 12 Mbit/s and low-speed operation up to 1.5 Mbit/s in a 14-pin TSSOP package. The device operates from a 1.65 V to 3.6 V supply, making it suitable for low-voltage USB connectivity and embedded systems. Its integrated transceiver architecture supports bidirectional USB data signaling while reducing the external circuitry required for a host, device, or interface application. A USB transceiver is an interface IC that converts digital controller signals into USB-compatible physical-layer signals and receives the corresponding bus signals from a USB connection. The TUSB2551 belongs to the USB interface transceiver hierarchy, alongside USB interface controllers, USB hubs, and USB power-management devices. Unlike a USB controller, it does not implement protocol or enumerate bus devices; it provides the physical-layer path between a USB-capable controller and a connector or cable. The TUSB2551 supports both full-speed and low-speed USB 2.0 operation. Texas Instruments identifies superior edge-rate control as a means of producing crisper eye diagrams, which can simplify USB compliance testing. Dual-supply operation allows the digital and analog portions of the device to use separate supply rails. The 1.65 V to 3.6 V operating range supports common 1.8 V and 3.3 V system environments while accommodating lower-voltage interface requirements. Typical uses include USB-to-serial bridges, embedded USB peripherals, industrial data acquisition, portable diagnostic equipment, and USB connectivity for microcontrollers that require an external physical-layer transceiver. Its 14-pin TSSOP format also supports PCB layouts that prioritize a small, widely available package rather than a leadless land pattern. System designers should still verify signal integrity, termination, cable routing, and supply sequencing against the manufacturer datasheet. For USB applications, the transceiver is used between the host or device controller and the connector. Differential pair routing should be short and impedance controlled, while supply and ground connections should provide low-impedance return paths. The device's low-voltage supply range makes it useful for portable equipment, but total system power, connector-current capability, and USB specification compliance remain separate design considerations. This page combines the verified Texas Instruments product information, distributor listings, package details, available cross-reference evidence, and practical guidance for evaluating the TUSB2551PW. It also distinguishes confirmed pin-compatible options from unreported electrical parameters so engineers can identify which data must be checked before approving a replacement.
TUSB320HAIRWBR - USB Type-C CC Logic, X2QFN-12 | TI
The Texas Instruments TUSB320HAIRWBR is a USB Type-C Configuration Channel (CC) logic and port controller in an industrial-grade (I-temp) active-high enable variant, packaged in a 12-pin X2QFN (RWB) measuring 1.6 mm × 1.6 mm. The device operates from a single 3.3 V supply and supports USB Type-C Specification 1.1 while remaining interoperable with 1.0 systems. It advertises and detects up to 3 A of VBUS current per Type-C current-mode rules and supports DFP (Source), UFP (Sink), and DRP (Dual Role) port roles selected through MODE pins. A USB Type-C Configuration Channel Logic IC is a state-machine controller that sits between a USB Type-C receptacle and the application processor or USB controller. Its job is to negotiate attach/detach events, cable orientation (CC1/CC2 polarity), role (host vs device), and current advertisement (default 500 mA, 1.5 A, or 3 A) through the CC1/CC2 pull-up and pull-down signalling defined by the USB-IF Type-C specification. Higher up the hierarchy it is an Interface IC > USB Interface IC; below it is the CC PHY layer. Key features include: integrated 5.1 kΩ CC pull-up resistors that can be toggled for DRP toggle, hardware MODE pin configuration (no firmware needed), active-high enable (EN) pin for power sequencing, low standby current with a dedicated low-power mode, and HBM ESD protection on CC pins. The X2QFN-12 RWB package keeps the device under 3 mm² footprint, ideal for compact dongles, hubs, and embedded platforms. Typical applications are any 5 V / 3 A USB Type-C ports that need a low-BOM CC controller: travel chargers, USB Type-C dongles, adapters, hubs, docking stations, smartphones, tablets, and notebooks. Because it operates as a standalone state machine with no MCU required, it is well-suited to cost- and board-area-sensitive designs. Design consideration: place the 100 nF decoupling capacitor within 2 mm of VCC and keep the CC traces short, matched, and away from switching nodes to preserve signal integrity. A 0 Ω or ferrite series resistor on VBUS is optional but recommended to limit inrush current at attach. This page synthesizes distributor pricing, drop-in alternatives, application pairings, and design notes not found in the manufacturer datasheet, optimized for engineers sourcing USB Type-C port controllers.