Texas Instruments SN74LVTH16541DL

Overview

SN74LVTH16541DL from Texas Instruments is a 3.3-V ABT 16-bit noninverting buffer/driver with 3-state outputs, designed for mixed-mode interfacing between 3.3-V logic and 5-V systems. It features dual 8-bit sections with independent output-enable controls (1OE1/1OE2 and 2OE1/2OE2), bus-hold on all data inputs, Ioff support for hot insertion, and operates from –40°C to 85°C.

For engineers reviewing the SN74LVTH16541DL datasheet, SN74LVTH16541DL pinout, SN74LVTH16541DL application, or SN74LVTH16541DL equivalent, key selection criteria include 3.3-V VCC operation with 5-V tolerant inputs, ±64-mA output drive capability, <4 ns propagation delay at 3.3 V, bus-hold functionality eliminating external resistors, and SSOP-48 package compatibility with high-density PCB layouts.

Technical Context

This device implements Advanced BiCMOS Technology (ABT) for low static power and robust noise immunity. Its flow-through architecture separates input and output banks across opposite sides of the 48-pin SSOP package, minimizing trace crosstalk and optimizing signal routing.

The dual 8-bit sections operate independently: each requires both OE inputs low to enable its eight Y outputs; either OE high forces that section's outputs into high-impedance. Bus-hold circuitry maintains valid logic levels on floating inputs without external components, and Ioff protection disables outputs during power-down to prevent backflow current.

Key Specifications

Pinout & Package

SN74LVTH16541DL is housed in a 48-pin Shrink Small-Outline Package (SSOP-DL) with 0.5-mm pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height. The package features distributed VCC and GND pins to suppress high-speed switching noise.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74LVC16244ADGGR and SN74ALVCH162244DLR, the SN74LVTH16541DL uniquely combines 5-V input tolerance, bus-hold, Ioff, and 64-mA drive in a single 48-pin SSOP package-making it the only option for robust mixed-voltage buffering with zero external components.

Availability

SN74LVTH16541DL is available at Aetrix Electronics and suitable for industrial automation controllers, automotive diagnostic interfaces, and memory expansion modules requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for SN74LVTH16541DL 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 connectivity solutions for industrial, automotive, and communications markets.

The SN74LVTH16541DL belongs to TI's Widebus™ family of advanced bus-interface ICs, engineered specifically for high-reliability mixed-voltage system interconnect in demanding industrial and automotive applications.

FAQ

What is the operating temperature range for the SN74LVTH16541DL?

The SN74LVTH16541DL is characterized for operation from –40°C to +85°C. This industrial temperature range ensures reliable performance in factory automation equipment, motor drives, and outdoor communication gateways where ambient temperatures fluctuate significantly. The device maintains specified IOL, VOL, and propagation delay across this full range without derating.

Does the SN74LVTH16541DL support hot-plug insertion?

Yes, the SN74LVTH16541DL supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V to prevent backflow current, and power-up 3-state places all outputs in high-impedance during power ramp-up. These functions are fully specified and tested per TI's production data, making SN74LVTH16541DL suitable for modular backplane systems requiring live card replacement.

Can the SN74LVTH16541DL interface directly with 5-V logic inputs?

Yes, the SN74LVTH16541DL accepts 5-V logic-level inputs while operating from a 3.3-V VCC supply. Its input voltage range extends to 5.5 V, and VIH is specified at 2.0 V - ensuring reliable recognition of standard TTL high states. This eliminates external level-shifting components when connecting to legacy 5-V peripherals or microcontrollers.

How does bus-hold functionality work on the SN74LVTH16541DL?

The SN74LVTH16541DL integrates active bus-hold circuitry on all data inputs (1A1–1A8 and 2A1–2A8), which applies a weak feedback current (±75 µA minimum) to maintain the last-valid logic state when inputs float. This eliminates the need for external pullup or pulldown resistors in systems with unterminated stubs or infrequently driven lines, reducing BOM count and PCB area.

What package type and dimensions does the SN74LVTH16541DL use?

The SN74LVTH16541DL uses a 48-pin Shrink Small-Outline Package (SSOP-DL) measuring 12.6 mm × 6.2 mm with 0.5-mm lead pitch and 1.2 mm max height. Its pin 1 identifier is marked in the top-left corner, and the package complies with JEDEC MO-153 standards - enabling compatibility with standard SMT assembly processes and reflow profiles.