Texas Instruments 74LVTH162241DLG4

Overview

74LVTH162241DLG4 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 four independent 4-bit sections, bus-hold on all data inputs, integrated 22-Ω output series resistors, and Ioff support for hot insertion in backplane or modular applications.

For engineers reviewing the 74LVTH162241DLG4 datasheet, 74LVTH162241DLG4 pinout, 74LVTH162241DLG4 application, or 74LVTH162241DLG4 equivalent, key selection criteria include 3.3-V supply operation with 5-V tolerant inputs, ±12-mA drive strength, sub-5-ns propagation delay at 3.3 V, and TSSOP-48 packaging for high-density board layouts.

Technical Context

This device implements Advanced BiCMOS Technology (ABT) to achieve low static power dissipation while maintaining TTL-compatible output levels. Each of its four 4-bit sections has complementary OE/!OE controls and noninverting logic paths, enabling flexible bus isolation and direction management.

The architecture integrates bus-hold circuitry on all 32 data inputs (A1–A4 per section), eliminating external pullup/pulldown resistors. Power-up 3-state and Ioff protection ensure safe hot-insertion by disabling outputs during power ramping or when VCC = 0.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.

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 74LVTH162241DLG4 uniquely combines 5-V input tolerance, bus-hold, integrated 22-Ω termination, and Ioff-making it the only option qualified for mixed-voltage hot-swap backplane use without supplemental components.

Availability

74LVTH162241DLG4 is available at Aetrix Electronics and suitable for backplane buffering, hot-swappable module interfaces, high-density memory expansion, legacy system voltage translation, and industrial control I/O consolidation requiring stable component supply across extended temperature ranges.

Supply support for 74LVTH162241DLG4 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 specializing in analog, embedded processing, and logic solutions, with decades of heritage in high-reliability interface ICs.

The LVTH family delivers advanced BiCMOS logic optimized for 3.3-V operation with mixed-signal compatibility, targeting telecom infrastructure, industrial automation, and aerospace data-path applications.

FAQ

What is the operating temperature range for the 74LVTH162241DLG4?

The 74LVTH162241DLG4 is characterized for operation from –40°C to +85°C, matching the commercial-grade SN74LVTH162241 specification. This range supports deployment in industrial control panels, network equipment enclosures, and automotive under-hood auxiliary modules where ambient temperatures remain within these limits. The device maintains full electrical performance-including tPLH/tPHL, VOH/VOL, and Ioff-across this entire span without derating.

Does the 74LVTH162241DLG4 support true 5-V input compatibility?

Yes, the 74LVTH162241DLG4 accepts input voltages up to 5.5 V regardless of VCC level (2.7–3.6 V), enabling direct connection to 5-V TTL or CMOS outputs without external level shifters. This capability is explicitly verified in the Absolute Maximum Ratings table and confirmed in Recommended Operating Conditions, where VI is specified at 5.5 V. Input clamp current remains within safe limits (±50 mA) under overvoltage conditions.

How does the bus-hold feature function on the 74LVTH162241DLG4?

The 74LVTH162241DLG4 incorporates active bus-hold circuitry on all 32 data inputs (A1–A4 per section), which applies ±750 µA of dynamic hold current to maintain the last-valid logic state when inputs float. This eliminates the need for external pullup or pulldown resistors, reduces BOM cost, and prevents undefined states that could trigger spurious transitions in downstream logic. Hold strength is guaranteed across the full operating temperature and voltage range.

Can the 74LVTH162241DLG4 be used in hot-insertion applications?

Yes, the 74LVTH162241DLG4 is explicitly designed for hot-insertion via dual protection mechanisms: Ioff circuitry disables outputs when VCC = 0, blocking reverse current flow from live backplanes; and power-up 3-state forces all outputs into high-impedance during power ramping (VCC < 1.5 V). These features meet JESD78 latch-up immunity (>500 mA) and MIL-STD-883 ESD requirements (2000 V HBM), making it suitable for telecom line cards and modular test equipment.

What package type and dimensions does the 74LVTH162241DLG4 use?

The 74LVTH162241DLG4 uses a TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm body size, 1.2 mm maximum height, and 0.5-mm lead pitch. Its pin 1 quadrant is Q1, and it complies with JEDEC MO-153. The package features NiPdAu lead finish, MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), and is optimized for fine-pitch reflow assembly in high-density PCBs.