Texas Instruments CLVTH162244IDGGREP

Overview

CLVTH162244IDGGREP from Texas Instruments is a 16-bit LVT low-voltage TTL-compatible buffer/line driver with true outputs and active-low 3-state enable, designed for 3.3-V V_CC operation while interfacing to 5-V systems. It supports mixed-mode signaling (5-V inputs/outputs with 3.3-V V_CC), delivers ±12 mA drive strength per output, and integrates 22-Ω series resistors to suppress overshoot/undershoot - used in high-speed backplane and bus interface applications.

For engineers reviewing the CLVTH162244IDGGREP datasheet, CLVTH162244IDGGREP pinout, CLVTH162244IDGGREP application, or CLVTH162244IDGGREP equivalent, key selection criteria include hot-insertion support via I_off and power-up 3-state, bus-hold on all data inputs eliminating external pull resistors, and distributed V_CC/GND pins minimizing switching noise in dense PCB layouts.

Technical Context

This device implements four independent 4-bit noninverting buffers, each with symmetrical active-low OE control (1OE–4OE). Each buffer section operates with TTL-level input thresholds (V_IL = 0.8 V, V_VIH = 2.0 V) while powered from 2.7–3.6 V, enabling direct connection to legacy 5-V logic without level shifters.

Its flow-through pin architecture reduces trace crossovers; bus-hold circuitry maintains valid logic states on undriven inputs at ±750 µA dynamic hold current; and I_off protection limits reverse current to ±100 µA when V_CC = 0 V, supporting safe hot-plug operation in modular systems.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package with 0.5-mm pitch, 12.5-mm × 6.1-mm body, and exposed thermal pad (not electrically connected). Pin 1 located in Q1 quadrant per tape-and-reel specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16244ADGGR and SN74ALVCH162244DGGR, CLVTH162244IDGGREP uniquely combines 5-V input/output tolerance, integrated 22-Ω termination, bus-hold, and hot-insertion support - making it the only option among the three qualified for unregulated battery-powered, mixed-voltage, hot-plug-capable systems.

Availability

CLVTH162244IDGGREP is available at Aetrix Electronics and suitable for industrial PLC baseboards, modular I/O carrier boards, backplane bus interfaces, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for CLVTH162244IDGGREP 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 specializing in analog, embedded processing, and logic solutions, with leadership in industrial, automotive, and communications markets.

The Widebus™ family - including CLVTH162244IDGGREP - was engineered for high-speed parallel bus interfacing in mixed-voltage systems, emphasizing signal integrity, hot-plug reliability, and reduced external component count.

FAQ

What is the operating temperature range for CLVTH162244IDGGREP?

The CLVTH162244IDGGREP is rated for operation from −40°C to +85°C ambient temperature, fully specified across this range for electrical performance, switching characteristics, and bus-hold functionality. This extended industrial temperature grade supports deployment in harsh environments such as factory automation controllers and outdoor telecom infrastructure where thermal cycling is common. The device's qualification pedigree includes temperature cycling and biased 85/85 testing per JEDEC standards.

Does CLVTH162244IDGGREP support hot insertion, and how is it implemented?

Yes, CLVTH162244IDGGREP supports hot insertion via two complementary features: I_off circuitry disables outputs when V_CC = 0 V, limiting reverse current to ±100 µA, and power-up 3-state forces outputs into high-impedance during power ramping (V_CC < 1.5 V). These mechanisms prevent bus contention and backflow damage when the device is inserted into a live backplane. The CLVTH162244IDGGREP datasheet confirms full compliance with hot-insertion requirements per TI's Enhanced Product Change Notification guidelines.

Can CLVTH162244IDGGREP drive 5-V logic inputs while powered from 3.3 V?

Yes, CLVTH162244IDGGREP is explicitly designed for mixed-mode operation: its inputs accept 5-V TTL levels (VIH = 2.0 V, VIL = 0.8 V) and its outputs drive 5-V loads (VOH ≥ 2.0 V at −12 mA, VOL ≤ 0.8 V at 12 mA) while powered from 2.7–3.6 V V_CC. This eliminates external level translators in systems integrating legacy 5-V peripherals with modern 3.3-V controllers - a core capability confirmed in the device's functional description and recommended operating conditions table.

What is the purpose of the 22-Ω series resistors on CLVTH162244IDGGREP outputs?

The 22-Ω series resistors integrated into each CLVTH162244IDGGREP output reduce signal overshoot and undershoot caused by transmission-line effects on PCB traces, particularly in unterminated or lightly loaded parallel buses. They dampen ringing without requiring external components, simplifying layout and improving signal integrity for trace lengths up to ~10 cm. This feature is documented in the device's "Features" list and verified by typical VOLP < 0.8 V measurements at 3.3 V.

How does bus-hold functionality work on CLVTH162244IDGGREP, and what current does it require?

Bus-hold on CLVTH162244IDGGREP uses internal feedback circuitry to maintain the last-valid logic state on undriven inputs, eliminating need for external pullup/pulldown resistors. It draws ±750 µA dynamic hold current (at V_CC = 3.6 V) to switch states - sufficient to override typical PCB leakage but low enough to avoid loading driven signals. The CLVTH162244IDGGREP datasheet specifies this behavior across temperature and confirms it applies to all 16 data inputs (1A1–4A4).