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Texas Instruments CY74FCT16543TPVCT
- Part No.:
- CY74FCT16543TPVCT
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT16543TPVCT.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,828
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Product details
Overview
CY74FCT16543TPVCT from Texas Instruments is a 16-bit high-speed latched transceiver organized as two independent 8-bit D-type latched transceivers, supporting bidirectional data flow with separate latch enable (LEAB/LEBA) and output enable (OEAB/OEBA) controls per direction. It delivers 64 mA sink / 32 mA source drive, operates at 5V ±10%, and targets industrial backplane and high-capacitance load interfacing.
For engineers reviewing the CY74FCT16543TPVCT datasheet, CY74FCT16543TPVCT pinout, CY74FCT16543TPVCT application, or CY74FCT16543TPVCT equivalent, key selection criteria include its 8.5 ns propagation delay in transparent mode, Ioff partial-power-down support, edge-rate controlled outputs for noise reduction, and SSOP-56 packaging for space-constrained PCB layouts.
Technical Context
The CY74FCT16543TPVCT implements dual 8-bit D-latch architecture with independent A-to-B and B-to-A control paths, each featuring dedicated CEAB/CEBA, LEAB/LEBA, and OEAB/OEBA inputs. Its latch-transparent operation enables synchronous data capture on LEAB/LEBA low-to-high transitions, while three-state outputs are enabled only when both CE and OE are asserted low.
Designed for robust industrial operation, it integrates Ioff circuitry to disable outputs during power-down and edge-rate control to suppress ground bounce (typical VOLP <1.0 V) and ESD protection (>2000 V). It is specified for −40°C to +85°C ambient and requires no external pull-up/down resistors on data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC | 5 V ±10% - compatible with standard TTL/CMOS logic rails and eliminates need for voltage translation in 5V systems |
| Propagation Delay (A↔B, transparent) | 1.5–8.5 ns - ensures sub-10 ns timing margin for high-speed bus handshaking and synchronous data transfer |
| Sink/Source Drive | 64 mA / 32 mA - sufficient to drive heavy capacitive loads (e.g., >100 pF traces) and low-impedance backplanes without signal degradation |
| Ioff Support | Yes - prevents damaging current backflow when powered down, enabling safe hot-swap and partial-power-down system architectures |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control, automation, and instrumentation environments |
| Package | SSOP-56 (O56, 300-mil width) - surface-mount, shrink-outline footprint with 0.635 mm pitch, optimized for automated assembly and board density |
Pinout & Package
Package: 56-pin Shrink Small Outline Package (SSOP), 300-mil body width, JEDEC MO-118 compliant, RoHS-compliant green finish (CU NIPDAU), MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 10–17, 19–26, 28–35, 37–44, 46–53 | A/B Data I/O Terminals | Bidirectional pins: serve as A inputs/B outputs (A→B path) or B inputs/A outputs (B→A path); internally connected to latch outputs and three-state buffers |
| 9, 18, 27, 36, 45, 54 | GND | Ground reference for all I/O and internal logic; six dedicated ground pins minimize ground bounce and improve noise immunity |
| 55, 56 | VCC | Single 5V supply rail; dual VCC pins reduce supply impedance and stabilize core voltage under fast switching |
| OEAB, OEBA | Output Enable (Active LOW) | Controls three-state output drivers: LOW enables A↔B data transfer; HIGH places outputs in high-impedance state to isolate buses |
| CEAB, CEBA | Direction Enable (Active LOW) | Enables data path: CEAB LOW permits A→B flow; CEBA LOW permits B→A flow; both HIGH disables all data movement |
| LEAB, LEBA | Latch Enable (Active LOW) | Transparent when LOW; stores A or B input value on LOW-to-HIGH transition - provides synchronous sampling of asynchronous bus data |
Key Features
| Feature | Design Value |
|---|---|
| Ioff partial-power-down support | Prevents back-current flow when VCC = 0 V, enabling safe integration into multi-rail systems with staggered power sequencing |
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) and ground bounce (VOLP <1.0 V), critical for signal integrity on dense PCBs and backplanes |
| Typical output skew <250 ps | Ensures tight timing alignment across all 16 bits - essential for parallel bus applications requiring deterministic setup/hold margins |
| ESD rating >2000 V | Meets MIL-STD-883 Class 3015 requirements, providing robust handling tolerance during manufacturing and field service |
| Industrial temperature range | Validated operation from −40°C to +85°C supports deployment in factory automation, motor drives, and outdoor infrastructure |
Applications
| Industrial Backplane Interface | High-Capacitance Bus Driver |
|---|---|
Use Scenario: Interfacing microcontroller local bus to a 16-bit parallel backplane carrying control and status signals across multiple chassis modules. IC Role / Device Role / Timing Role: Bidirectional latched transceiver that isolates domains, synchronizes data transfers via LEAB/LEBA, and drives long traces with high sink/source capability. Use Value: Eliminates need for discrete level shifters or buffer arrays; 64 mA drive ensures clean edges on 100+ pF loads; Ioff prevents backfeeding during module hot-swap. | Use Scenario: Driving a 16-bit address/data multiplexed bus connecting FPGA to legacy memory or peripheral ASIC with >80 pF total trace capacitance. IC Role / Device Role / Timing Role: Latched transceiver providing registered input capture and three-state output control, decoupling timing between master and slave devices. Use Value: Edge-rate control minimizes ground bounce-induced timing jitter; 8.5 ns max propagation delay meets 10 MHz bus timing budgets; SSOP-56 fits constrained routing zones. |
| Modular PLC I/O Expansion | Legacy System Bus Bridge |
Use Scenario: Adding isolated digital I/O modules to a programmable logic controller rack where each module must read/write 16-bit status registers over a shared parallel bus. IC Role / Device Role / Timing Role: Direction-controlled transceiver enabling master-initiated reads/writes while maintaining electrical isolation between modules and CPU backplane. Use Value: Separate CEAB/CEBA and OEAB/OEBA pins allow independent control of read and write cycles; industrial temp rating ensures reliability in control cabinet environments. | Use Scenario: Bridging a modern ARM-based controller to an older 16-bit ISA-style peripheral card requiring strict TTL-compatible signaling and latch synchronization. IC Role / Device Role / Timing Role: Protocol-transparent interface IC that matches voltage levels, adds latch registration, and provides bus contention management via three-state control. Use Value: 5V ±10% VCC tolerance accommodates legacy power supplies; VOL/VOLH specs guarantee interoperability with vintage TTL logic; SSOP package eases retrofit onto existing PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar latched transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162543TPVCT | 24 mA balanced output drivers; lower ground bounce (VOLP <0.6 V); no high-drive sink capability | Better suited for transmission-line driving and noise-sensitive applications; not ideal for heavy capacitive loads | Select when minimizing SSN is prioritized over raw drive strength; verify layout termination requirements match |
| CY74FCT162H543TPVCT | Includes bus-hold circuitry on all data inputs; retains last valid state during high-impedance conditions | Eliminates external pull-up/down resistors; improves reliability in floating-bus scenarios but adds input hysteresis | Choose for systems with intermittent bus activity or unpowered peripherals; confirm bus-hold current does not affect upstream driver loading |
Compared with CY74FCT162543TPVCT and CY74FCT162H543TPVCT, the CY74FCT16543TPVCT offers highest sink current for driving legacy backplanes, while the alternatives trade drive strength for reduced noise or input stability-selection depends on whether load drive, signal integrity, or input robustness dominates the design requirement.
Availability
CY74FCT16543TPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, high-capacitance bus drivers, modular PLC I/O expansion, and legacy system bus bridge applications requiring stable component supply and long-term lifecycle support.
Supply support for CY74FCT16543TPVCT 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 and embedded processing solutions, with deep expertise in logic, timing, and interface ICs for industrial, automotive, and communications markets.
The CY74FCT16543TPVCT belongs to TI's FCT logic family, engineered for high-speed, low-noise, 5V CMOS-compatible bus interfacing in industrial control and data acquisition systems.
FAQ
What is the maximum propagation delay of the CY74FCT16543TPVCT in transparent mode?
The CY74FCT16543TPVCT has a maximum propagation delay of 8.5 ns in transparent mode (A↔B data flow), measured under industrial temperature and 5V ±10% VCC conditions. This specification ensures reliable timing closure in 10–12 MHz parallel bus systems and is validated across the full −40°C to +85°C operating range. The CY74FCT16543TPVCT datasheet confirms this value in the Switching Characteristics table.
Does the CY74FCT16543TPVCT support partial-power-down operation?
Yes, the CY74FCT16543TPVCT supports partial-power-down operation via its Ioff circuitry, which disables outputs when VCC = 0 V to prevent damaging current backflow. This feature is explicitly documented in the Functional Description and Maximum Ratings sections of the CY74FCT16543TPVCT datasheet and is critical for hot-swap and multi-rail system designs.
What package type and dimensions does the CY74FCT16543TPVCT use?
The CY74FCT16543TPVCT uses a 56-pin SSOP (Shrink Small Outline Package) with 300-mil body width (JEDEC MO-118, drawing DL), 0.635 mm lead pitch, and 1.9 mm max height. Mechanical drawings confirm 13.9–14.1 mm length, 5.9–6.2 mm width, and 6-pin GND/VCC distribution. This package is RoHS-compliant with CU NIPDAU finish and MSL Level-1 rating.
Can the CY74FCT16543TPVCT drive high-capacitance loads effectively?
Yes, the CY74FCT16543TPVCT is specifically designed for high-capacitance loads, delivering 64 mA sink and 32 mA source current. Its edge-rate control circuitry limits ground bounce (typical VOLP <1.0 V), and the 8.5 ns max propagation delay remains stable under capacitive loading. The CY74FCT16543TPVCT datasheet states it is "ideally suited for driving high-capacitance loads and low-impedance backplanes."
How many independent control paths does the CY74FCT16543TPVCT provide?
The CY74FCT16543TPVCT provides two fully independent 8-bit control paths: one for A-to-B data flow (using CEAB, LEAB, OEAB) and another for B-to-A flow (using CEBA, LEBA, OEBA). Each path features separate latch and output enable logic, allowing concurrent or asymmetric bidirectional operation without interference - a capability confirmed in the Functional Description and Truth Table of the CY74FCT16543TPVCT datasheet.
CY74FCT16543TPVCT 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:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
CY74FCT16543TPVCT FAQ
1.How can I place an order for CY74FCT16543TPVCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16543TPVCT 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 CY74FCT16543TPVCT reliable?
The price and inventory of CY74FCT16543TPVCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16543TPVCT is usually 5 days.
3.What payment methods are accepted for CY74FCT16543TPVCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16543TPVCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16543TPVCT?
CY74FCT16543TPVCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16543TPVCT 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 CY74FCT16543TPVCT?
For technical support, including CY74FCT16543TPVCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16543TPVCT requirements.
6.How does Aetrix verify that CY74FCT16543TPVCT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16543TPVCT 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 CY74FCT16543TPVCT meets industry standards.
7.What is the process for return or replacement of CY74FCT16543TPVCT?
All CY74FCT16543TPVCT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16543TPVCT, 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 CY74FCT16543TPVCT part is unused and in its original packaging.
Return procedure for CY74FCT16543TPVCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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