Texas Instruments 74FCT16245TPVCG4

Overview

74FCT16245TPVCG4 from Texas Instruments is a 16-bit non-inverting bus transceiver with direction control (DIR) and three-state output enable (OE), designed for bidirectional synchronous communication between high-capacitance buses or backplanes. It delivers 64 mA sink / 32 mA source drive, supports partial-power-down via Ioff, operates at 5V ±10%, and features typical output skew <250 ps. It is used in industrial bus interface systems requiring robust noise immunity and fast propagation (7.0 ns max tPLH/tPHL).

For engineers reviewing the 74FCT16245TPVCG4 datasheet, 74FCT16245TPVCG4 pinout, 74FCT16245TPVCG4 application, or 74FCT16245TPVCG4 equivalent, key selection criteria include its 48-pin SSOP package, industrial temperature range (–40°C to +85°C), Ioff-enabled power-down protection, ground-bounce performance (VOLP <1.0 V), and compatibility with TTL/CMOS logic levels.

Technical Context

This device implements dual 8-bit bidirectional data paths controlled by a shared DIR signal and independent OE inputs per side. Its output drivers are asymmetrical (64 mA sink / 32 mA source), optimized for driving heavy capacitive loads like backplanes without external termination. The Ioff circuitry actively disables outputs when VCC = 0 V, preventing current backflow during partial power-down sequences.

Propagation delay is specified at 7.0 ns (max) across A↔B paths under industrial conditions, with output enable/disable times of 9.5 ns (max). Edge-rate control circuitry limits di/dt to reduce simultaneous switching noise, and ESD tolerance exceeds 2000 V per MIL-STD-883 Method 3015.

Key Specifications

Pinout & Package

74FCT16245TPVCG4 is housed in a 48-pin SSOP (Shrink Small Outline Package), 300-mil body width, 0.025-inch pitch, with 1.2 mm max height and JEDEC MO-153 compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bidirectional transceiver applications.

Compared with SN74FCT16245CPVG4, the 74FCT16245TPVCG4 offers identical functionality with updated packaging and lifecycle status; versus 74ALVC16245PW,118, it provides 5-V operation, higher drive strength, Ioff support, and proven noise immunity-making it the preferred choice for industrial 5-V bus interfacing.

Availability

74FCT16245TPVCG4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus bridges, and programmable logic I/O expansion requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.

Supply support for 74FCT16245TPVCG4 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 74FCT16245TPVCG4 belongs to TI's FCT logic family, engineered specifically for high-speed, low-noise 5-V bus interfacing in industrial control and computing infrastructure where reliability under noise and power sequencing stress is critical.

FAQ

What is the maximum operating frequency supported by the 74FCT16245TPVCG4?

The 74FCT16245TPVCG4 does not specify a maximum clock frequency directly, but its 7.0 ns maximum propagation delay (tPLH/tPHL) and 9.5 ns maximum output enable time (tPZL/tPZH) support reliable operation in bus systems running up to approximately 140 MHz for burst-mode transfers. Actual achievable frequency depends on load capacitance, trace length, and system timing margins - design validation is required for frequencies above 50 MHz.

Does the 74FCT16245TPVCG4 support hot-swap or partial-power-down operation?

Yes, the 74FCT16245TPVCG4 supports partial-power-down via its Ioff feature: when VCC = 0 V, the outputs are actively disabled to prevent damaging current backflow from live buses into the unpowered device. This makes the 74FCT16245TPVCG4 suitable for hot-plug applications such as modular backplanes and reconfigurable I/O systems where power sequencing is asymmetric.

What is the pin compatibility between 74FCT16245TPVCG4 and CY74FCT16245TPVC?

The 74FCT16245TPVCG4 and CY74FCT16245TPVC are pin-compatible and functionally identical - both are 48-pin SSOP-packaged 16-bit transceivers with identical pinout, electrical specifications, and timing. The "G4" suffix denotes RoHS-compliant lead finish and tape-and-reel packaging per TI's standard ordering convention; CY-prefix parts were originally Cypress-branded but fully integrated into TI's FCT portfolio post-acquisition.

Can the 74FCT16245TPVCG4 be used with 3.3-V logic inputs?

Yes, the 74FCT16245TPVCG4 accepts 3.3-V logic inputs safely: its VIH threshold is 2.0 V min and VIL is 0.8 V max, well within 3.3-V CMOS/TTL logic swing. However, its outputs swing to 5-V levels (VOH ≈ 3.5 V min at –32 mA), so interfacing with 3.3-V receivers requires level translation or 5-V-tolerant inputs - the 74FCT16245TPVCG4 itself does not perform voltage translation.

What is the thermal resistance (θJA) for the 74FCT16245TPVCG4 in SSOP package?

The 74FCT16245TPVCG4 in 48-pin SSOP (DL package) has a typical junction-to-ambient thermal resistance (θJA) of 76°C/W under standard JEDEC JESD51-2 PCB conditions (2-layer board, 1 in² copper pad). This value assumes no added heatsinking; actual θJA will vary with PCB layout, copper area, airflow, and adjacent power components - thermal simulation or measurement is recommended for high-duty-cycle applications.