Texas Instruments CY74FCT162823CTPVC

Overview

CY74FCT162823CTPVC from Texas Instruments is an 18-bit, dual 9-bit bus interface register with balanced 24 mA output drivers, Ioff partial-power-down support, and flow-through pinout in 56-lead SSOP (O56) package. It operates at 5V ±10%, delivers typical VOL < 0.55 V at 24 mA sink, supports industrial temperature range (−40°C to +85°C), and is optimized for driving transmission lines with reduced ground bounce (<0.6 V) in high-speed digital systems.

For engineers reviewing the CY74FCT162823CTPVC datasheet, CY74FCT162823CTPVC pinout, CY74FCT162823CTPVC application, or CY74FCT162823CTPVC equivalent, key selection criteria include its 6 ns max propagation delay (CLK→Q), 0.5 ns output skew, 24 mA balanced drive strength, Ioff-enabled power-down isolation, and SSOP packaging compatibility with backplane and memory interface designs.

Technical Context

This device implements two independent 9-bit registers sharing common clock enable (CLKEN), clear (CLR), and output enable (OE) controls - enabling synchronized 18-bit latching. Its edge-rate control circuitry suppresses switching noise, while current-limiting resistors in each output reduce need for external termination and minimize undershoot.

The CY74FCT162823CTPVC uses TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), features hysteresis (100 mV), and guarantees Ioff < 1 µA at VCC = 0 V to prevent backflow during partial power-down. Output disable time is as low as 5.2 ns (CL = 5 pF), supporting fast bus turnaround in multiplexed data paths.

Key Specifications

Pinout & Package

Package: 56-lead SSOP (O56), 300-mil body width, 0.025-inch (0.635 mm) pitch, 1.2 mm max height. Pin 1 marked via corner chamfer; seating plane defined per JEDEC MO-153.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit bus interface register applications.

Compared with CY74FCT162823CTPVC, the TSSOP variant offers identical functionality in a smaller footprint but demands tighter manufacturing tolerances, while the ALVTH variant shifts to lower-voltage domains and forfeits Ioff and 5 V compatibility - making CY74FCT162823CTPVC the sole choice for robust, hot-swap-capable 5 V industrial bus interfaces.

Availability

CY74FCT162823CTPVC is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem latching, PLC I/O expansion, and automated test equipment requiring stable component supply, long-term lifecycle assurance, and consistent SSOP packaging.

Supply support for CY74FCT162823CTPVC 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 with emphasis on reliability, precision, and industrial-grade qualification.

CY74FCT162823CTPVC belongs to TI's FCT logic family - engineered for high-speed, low-noise 5 V digital interfacing in mission-critical industrial, telecom, and computing infrastructure.

FAQ

What is the maximum clock frequency supported by CY74FCT162823CTPVC?

CY74FCT162823CTPVC does not specify a maximum clock frequency directly, but its 6.0 ns maximum propagation delay (CLK→Q) and 3.3 ns minimum clock pulse width imply reliable operation up to approximately 100 MHz in well-terminated systems. Timing margins must account for board-level skew, load capacitance, and setup/hold requirements of downstream devices. The CY74FCT162823CTPVC datasheet confirms tW(CLK) ≥ 3.3 ns and tSU(D→CLK) ≥ 2.0 ns under standard conditions.

Does CY74FCT162823CTPVC support hot-swap or partial-power-down operation?

Yes, CY74FCT162823CTPVC fully supports partial-power-down via its Ioff circuitry. When VCC = 0 V, Ioff limits output leakage to <1 µA, preventing damaging current backflow from powered sections of the system. This enables safe insertion and removal in live backplanes - a key requirement validated in the datasheet's "Ioff Power-Off Disable" specification and functional description.

What is the difference between CY74FCT162823CTPVC and CY74FCT16823CTPVC?

CY74FCT162823CTPVC features balanced 24 mA output drivers with integrated current-limiting resistors, optimized for transmission-line driving with minimal ground bounce (<0.6 V). In contrast, CY74FCT16823CTPVC provides asymmetric 64 mA sink / 32 mA source drive, targeting high-capacitance loads and backplanes. Their pinouts and logic functions are identical, but drive strength, noise performance, and application focus differ significantly.

Is CY74FCT162823CTPVC RoHS compliant?

Yes, CY74FCT162823CTPVC is RoHS compliant. TI's official packaging information confirms "RoHS: Yes" for this orderable part number, with lead finish specified as NiPdAu (nickel-palladium-gold) and MSL rating per JEDEC standards. Compliance applies to both SSOP (O56) and TSSOP (Z56) variants in the CY74FCT162823C speed grade.

Can CY74FCT162823CTPVC be used with 3.3 V logic inputs?

CY74FCT162823CTPVC accepts 3.3 V logic inputs safely: its VIH threshold is 2.0 V minimum and VIL is 0.8 V maximum, fully compatible with 3.3 V CMOS/TTL output levels. However, it requires a 5 V supply (VCC = 5 V ±10%) and produces 5 V output swings - level-shifting is needed if interfacing to 3.3 V receivers without 5 V tolerance.