Texas Instruments CY74FCT162244TPVC

Overview

CY74FCT162244TPVC from Texas Instruments is a 16-bit non-inverting three-state buffer/line driver with balanced 24-mA output drivers, designed for high-speed bus interface applications including memory and clock distribution. It operates at VCC = 5V ±10%, supports –40°C to +85°C industrial temperature range, features Ioff partial-power-down protection, and delivers typical VOL < 0.55V at 24-mA sink current.

For engineers reviewing the CY74FCT162244TPVC datasheet, CY74FCT162244TPVC pinout, CY74FCT162244TPVC application, or CY74FCT162244TPVC equivalent, key selection criteria include its 4.8-ns max propagation delay, 24-mA balanced drive capability, flow-through pinout in 48-pin SSOP, and ground-bounce reduction via integrated current-limiting resistors.

Technical Context

This device implements four independent 4-bit groups (1A–4A inputs → 1Y–4Y outputs), each controlled by dedicated active-low OE pins (1OE–4OE). Its balanced output stage integrates current-limiting resistors to minimize undershoot and ground bounce without external termination.

The Ioff circuitry ensures outputs are disabled and high-impedance when VCC = 0V, preventing backflow current during partial power-down. Input hysteresis (100 mV) improves noise immunity, while typical output skew < 250 ps enables precise timing alignment across all 16 outputs.

Key Specifications

Pinout & Package

Package: 48-pin SSOP (O48), 300-mil body width, 0.5-mm lead pitch, JEDEC MO-153 compliant, 1.2-mm max height.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.

Compared with CY74FCT16244TPVC and CY74FCT162H244TPVC, the CY74FCT162244TPVC offers optimized trade-offs for transmission-line driving: lower ground bounce and built-in current limiting reduce layout sensitivity, while retaining identical pinout, timing, and thermal specs - making it ideal for noise-critical, medium-load applications without bus-hold requirements.

Availability

CY74FCT162244TPVC is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and clock distribution networks requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY74FCT162244TPVC 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The CY74FCT162244TPVC belongs to TI's FCT logic family, engineered specifically for high-speed, low-noise bus interfacing in industrial and telecom infrastructure where signal integrity, power-down safety, and timing predictability are critical.

FAQ

What is the maximum propagation delay specification for CY74FCT162244TPVC?

The maximum propagation delay (tPLH/tPHL) for CY74FCT162244TPVC is 4.8 ns over the full industrial temperature range (–40°C to +85°C) and VCC = 5V ±10%. This value is measured from input transition to valid output transition under specified load conditions and ensures deterministic timing in synchronous bus architectures. The CY74FCT162244TPVC achieves this performance while maintaining low ground bounce and balanced drive characteristics not found in earlier FCT variants.

Does CY74FCT162244TPVC support partial power-down operation?

Yes, CY74FCT162244TPVC fully supports partial-power-down operation via its Ioff circuitry. When VCC = 0V, the outputs enter a high-impedance state and leakage current is limited to ±1 µA, preventing damaging current backflow from live buses into the unpowered device. This feature is explicitly characterized and guaranteed in the datasheet, making CY74FCT162244TPVC suitable for hot-swap, multi-rail, and power-gated system designs where sequencing is not tightly controlled.

What package type is used for CY74FCT162244TPVC?

CY74FCT162244TPVC uses a 48-pin SSOP (Shrink Small Outline Package) with 300-mil body width and 0.5-mm lead pitch, designated O48 per TI's packaging nomenclature. It complies with JEDEC MO-153 mechanical standards, has dual VCC and GND pins for improved power integrity, and is RoHS-compliant. This package is distinct from the TSSOP (Z48) variant and requires specific land patterns and stencil designs per TI's DLP-0048A mechanical drawing.

How does CY74FCT162244TPVC reduce ground bounce compared to other FCT buffers?

CY74FCT162244TPVC reduces ground bounce through integrated current-limiting resistors in its 24-mA balanced output drivers, achieving typical VOLP < 0.6V at VCC = 5V and TA = 25°C - significantly lower than the 1.0V typical of CY74FCT16244TPVC. This design minimizes transient current spikes during simultaneous switching, directly lowering ∆I/∆t-induced noise on shared ground planes. The effect is validated in application-critical scenarios like memory bus driving and clock fan-out where signal integrity margins are tight.

Can CY74FCT162244TPVC be used as a direct replacement for CY74FCT16244TPVC?

No, CY74FCT162244TPVC is not a direct replacement for CY74FCT16244TPVC due to fundamental differences in output drive architecture: CY74FCT162244TPVC uses current-limited ±24-mA drivers optimized for transmission-line driving, whereas CY74FCT16244TPVC provides higher ±32/64-mA drive without internal limiting. While pinout and timing are identical, substituting CY74FCT162244TPVC in a design originally using CY74FCT16244TPVC may result in insufficient drive strength for heavy capacitive loads unless verified per actual trace impedance and loading conditions. Always validate signal integrity with scope measurements.