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Texas Instruments 74FCT162543CTPVCT
- Part No.:
- 74FCT162543CTPVCT
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74FCT162543CTPVCT.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,870
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Product details
Overview
74FCT162543CTPVCT from Texas Instruments is a 16-bit high-speed latched transceiver organized as two independent 8-bit D-type latched transceivers, featuring balanced 24 mA output drivers, 5.1 ns propagation delay (transparent mode), typical ground bounce <0.6 V at VCC = 5 V, and industrial temperature range (−40°C to +85°C). It enables bidirectional data flow control in memory expansion and bus isolation applications.
For engineers reviewing the 74FCT162543CTPVCT datasheet, 74FCT162543CTPVCT pinout, 74FCT162543CTPVCT application, or 74FCT162543CTPVCT equivalent, key selection criteria include Ioff partial-power-down support, edge-rate controlled outputs for noise reduction, TSSOP/SSOP package compatibility, and precise timing parameters for synchronous bus interfacing.
Technical Context
The 74FCT162543CTPVCT implements dual 8-bit latch architecture with separate Latch Enable (LEAB/LEBA) and Output Enable (OEAB/OEBA) controls per direction, enabling independent A-to-B and B-to-A data latching and three-state output control. Its Ioff circuitry disables outputs during power-down to prevent backflow current.
It uses edge-rate control circuitry to limit slew rate, reducing system switching noise and ground bounce. The balanced 24 mA drivers incorporate internal current-limiting resistors, minimizing undershoot and eliminating need for external termination on transmission lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ± 10% - compatible with standard TTL/CMOS logic rails and ensures interoperability with legacy 5-V systems. |
| Propagation Delay | 1.5–5.1 ns (transparent mode) - enables high-throughput data transfer in fast parallel buses without timing bottlenecks. |
| Output Drive | ±24 mA balanced - provides matched sourcing/sinking capability for clean signal integrity on stubbed or distributed traces. |
| Ground Bounce | Typical VOLP < 0.6 V at VCC = 5 V, TA = 25°C - reduces supply rail disturbance during simultaneous switching, critical for mixed-signal stability. |
| Operating Temp | −40°C to +85°C - certified for industrial environments including factory automation and telecom infrastructure. |
| Ioff Support | Active at VCC = 0 V - allows safe partial-power-down operation in hot-swap or multi-rail systems without damaging current paths. |
| ESD Rating | >2000 V HBM - meets MIL-STD-883 Class 3015 requirements for robust handling in manufacturing and field service. |
Pinout & Package
74FCT162543CTPVCT is housed in a 56-lead SSOP (Shrink Small Outline Package), 300-mil body width, JEDEC MO-118 compliant, with 0.025-inch (0.635 mm) lead pitch and 1.2 mm max height. Pin 1 identifier located at top-left corner of package marking area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 1OEBA, 2OEAB, 2OEBA | A/B Output Enable (active LOW) | Controls three-state output buffers independently per 8-bit channel; enables selective bus driving without contention. |
| 1CEAB, 1CEBA, 2CEAB, 2CEBA | A/B Enable (active LOW) | Gates data flow direction; must be LOW to allow input capture or output reflection from latches. |
| 1LEAB, 1LEBA, 2LEAB, 2LEBA | A/B Latch Enable (active LOW) | Configures latches as transparent (LOW) or storage (LOW→HIGH transition); defines sampling edge for data capture. |
| A1–A8, A9–A16 | A-side data I/O | Bi-directional terminals: serve as inputs when CEAB/CEBA active, outputs when OEAB/OEBA active and latched data valid. |
| B1–B8, B9–B16 | B-side data I/O | Bi-directional terminals: mirror A-side behavior with independent control; supports full-duplex bus bridging. |
| VCC, GND (×4 each) | Power & Ground | Distributed supply/ground pins minimize IR drop and improve noise immunity across wide 16-bit interface. |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces EMI and crosstalk by limiting slew rate-critical for dense PCB layouts with adjacent high-speed traces. |
| 24 mA balanced drivers | Eliminates need for external series termination resistors on transmission lines, simplifying layout and lowering BOM cost. |
| Ioff partial-power-down | Prevents backflow current when VCC = 0 V, enabling safe insertion/removal in live-backplane systems. |
| Low ground bounce (<0.6 V) | Maintains stable reference for analog sections and clock recovery circuits sharing same ground plane. |
| Industrial temperature range | Validated operation from −40°C to +85°C ensures reliability in uncontrolled ambient environments like motor drives and base stations. |
Applications
| Memory Expansion Interface | Backplane Bus Isolation |
|---|---|
Use Scenario: Interfacing microprocessor address/data bus to external SRAM or Flash memory banks with separate read/write timing. IC Role / Device Role / Timing Role: Acts as bidirectional latched buffer between CPU and memory, isolating timing domains and preventing bus contention during page-mode access. Use Value: 5.1 ns propagation delay and 2 ns setup/hold times enable tight timing margins at >20 MHz bus clocks without added wait states. | Use Scenario: Segregating control and data lanes across modular chassis backplanes in industrial PLCs or test equipment. IC Role / Device Role / Timing Role: Provides galvanically isolated, direction-controlled data path between slot controllers and peripheral modules using shared parallel bus. Use Value: Ioff support allows hot-swap of modules while main backplane remains powered, avoiding system reset or data corruption. |
| High-Speed Data Acquisition Buffer | Legacy System Bus Bridge |
Use Scenario: Capturing parallel ADC output streams (e.g., 16-bit SAR or sigma-delta converters) into FPGA or DSP memory buffers. IC Role / Device Role / Timing Role: Latches sampled data on LEAB/LEBA edges, then presents stable values to processor via OEAB/OEBA-controlled outputs. Use Value: Typical output skew <0.5 ns ensures simultaneous capture across all 16 bits, preserving sample coherence for time-critical measurements. | Use Scenario: Connecting modern microcontrollers to legacy ISA or VMEbus peripherals requiring 5-V tolerant, latch-based handshaking. IC Role / Device Role / Timing Role: Translates between contemporary controller timing and older peripheral strobe protocols using independent CE/LE/OE controls. Use Value: Balanced 24 mA drive sustains signal integrity over long ribbon cables up to 30 cm, meeting VME spec voltage thresholds at receiver end. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar latched transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16543CTPVCT | 64 mA sink / 32 mA source asymmetry; higher ground bounce (typ. <1.0 V); no edge-rate control. | Better suited for driving heavy capacitive loads (e.g., backplanes), less optimal for low-noise transmission lines. | Select when maximum drive strength outweighs noise sensitivity; verify ground bounce margin in mixed-signal designs. |
| 74FCT162H543CTPVCT | Includes bus-hold circuitry on all data inputs; identical 24 mA drive and timing specs. | Eliminates external pull-up/down resistors on floating bus segments; ideal for unpopulated or configurable slots. | Choose when input state retention is required during tri-state periods or hot-plug events; adds ~1 µA input leakage per pin. |
Compared with CY74FCT16543CTPVCT and 74FCT162H543CTPVCT, the 74FCT162543CTPVCT delivers superior noise performance and transmission-line compatibility due to its edge-rate control and lower ground bounce, while retaining identical pinout and timing-making it the preferred choice for EMI-sensitive or high-fidelity digital interfaces.
Availability
74FCT162543CTPVCT is available at Aetrix Electronics and suitable for memory expansion interfaces, backplane bus isolation, and high-speed data acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for 74FCT162543CTPVCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74FCT162543CTPVCT belongs to TI's FCT logic family, engineered for high-speed, low-noise 5-V CMOS/TTL-compatible interfacing in mission-critical industrial systems where signal integrity and power-down safety are essential.
FAQ
What is the maximum operating frequency supported by the 74FCT162543CTPVCT?
The 74FCT162543CTPVCT does not specify a maximum clock frequency directly, but its 5.1 ns propagation delay (transparent mode) and 2 ns setup/hold times enable reliable operation with bus cycles down to ~100 MHz in latch-controlled configurations. Actual achievable frequency depends on system-level timing margins, trace length, and load capacitance-designers should perform static timing analysis using worst-case delays from the datasheet.
Does the 74FCT162543CTPVCT support hot-swap operation?
Yes, the 74FCT162543CTPVCT supports hot-swap operation via its Ioff circuitry, which disables outputs when VCC = 0 V. This prevents damaging current backflow during insertion or removal in live-backplane systems. However, proper sequencing of enable controls (CEAB/OEAB) is still required to avoid bus contention before full power stabilization.
Can the 74FCT162543CTPVCT drive unterminated 50-Ω transmission lines?
Yes-the 74FCT162543CTPVCT's balanced 24 mA output drivers include internal current-limiting resistors, enabling direct drive of unterminated 50-Ω lines with minimal overshoot/undershoot. Measured ground bounce remains below 0.6 V, making it suitable for point-to-point or short-stub transmission line topologies without external termination components.
How does the 74FCT162543CTPVCT differ from the CY74FCT162H543CTPVCT?
The 74FCT162543CTPVCT and CY74FCT162H543CTPVCT share identical timing, drive strength, and package-but the latter adds bus-hold circuitry on all data inputs to retain last valid logic state during high-impedance conditions. This eliminates external pull-up/down resistors in configurable or hot-plug interfaces, at the cost of slightly higher input leakage (~1 µA per pin).
Is the 74FCT162543CTPVCT RoHS compliant and lead-free?
Yes, the 74FCT162543CTPVCT is RoHS compliant and manufactured under TI's Green (RoHS & no Sb/Br) eco plan, with CU NIPDAU lead finish and JEDEC Level-1 moisture sensitivity rating (260°C peak reflow). It meets all EU RoHS Directive 2011/65/EU substance restrictions, including ≤0.1% lead by weight in homogeneous materials.
74FCT162543CTPVCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
74FCT162543CTPVCT FAQ
1.How can I place an order for 74FCT162543CTPVCT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT162543CTPVCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74FCT162543CTPVCT reliable?
The price and inventory of 74FCT162543CTPVCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162543CTPVCT is usually 5 days.
3.What payment methods are accepted for 74FCT162543CTPVCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT162543CTPVCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT162543CTPVCT?
74FCT162543CTPVCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT162543CTPVCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74FCT162543CTPVCT?
For technical support, including 74FCT162543CTPVCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162543CTPVCT requirements.
6.How does Aetrix verify that 74FCT162543CTPVCT is sourced from the original manufacturer or authorized distributors?
All 74FCT162543CTPVCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74FCT162543CTPVCT meets industry standards.
7.What is the process for return or replacement of 74FCT162543CTPVCT?
All 74FCT162543CTPVCT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162543CTPVCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74FCT162543CTPVCT part is unused and in its original packaging.
Return procedure for 74FCT162543CTPVCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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