Nexperia USA Inc. 74LVCH16541ADGG,51

Overview

74LVCH16541ADGG,51 from Nexperia is a 16-bit dual 8-bit non-inverting 3-state buffer/line driver with bus hold inputs, operating from 1.2 V to 3.6 V supply, supporting 5 V-tolerant I/O, and rated for -40 °C to +125 °C ambient temperature. It enables bidirectional data isolation in high-density memory or bus interface circuits where mixed-voltage domain interfacing (e.g., 3.3 V logic driving 5 V loads) is required.

For engineers reviewing the 74LVCH16541ADGG,51 datasheet, 74LVCH16541ADGG,51 pinout, 74LVCH16541ADGG,51 application, or 74LVCH16541ADGG,51 equivalent, key selection criteria include 3-state enable timing (tdis ≤ 7.0 ns at 3.3 V), bus hold current (IBHL = 60 μA min at +125 °C), 5.5 V-tolerant outputs in 3-state, and TSSOP48 thermal derating (12.2 mW/K above 109 °C).

Technical Context

This device implements two independent 8-bit buffered paths (1A→1Y and 2A→2Y), each controlled by dual active-low output enables (1OE1/1OE2 and 2OE1/2OE2). All 16 data inputs feature integrated bus hold circuitry, eliminating external pull-ups and maintaining valid logic states on floating inputs without additional components.

It supports JEDEC-compliant voltage interfaces across three ranges: JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), with static input thresholds scaling proportionally to VCC and guaranteed VOL ≤ 0.8 V at IO = 24 mA (VCC = 3.0 V).

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, body width 6.1 mm, 0.5 mm lead pitch, 1.2 mm max height. Designed for high-density PCB layouts with low-inductance power/ground pin distribution (8 GND, 4 VCC pins).

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 74ALVC164245PW,118, the 74LVCH16541ADGG,51 uniquely combines ultra-low-voltage operation (down to 1.2 V), 5.5 V I/O tolerance, and integrated bus hold - making it the sole option for compact, mixed-domain, high-reliability embedded interfaces requiring zero external bias components.

Availability

74LVCH16541ADGG,51 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics modules, and telecom base station backplanes requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74LVCH16541ADGG,51 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

Nexperia is a global semiconductor expert delivering high-performance, reliable, and energy-efficient logic, analog, and MOSFET solutions, with leadership in automotive and industrial-grade standard products.

The 74LVCH16541A belongs to Nexperia's LVCH (Low-Voltage CMOS with Hold) logic family, engineered specifically for robust, low-power, mixed-voltage interfacing in space- and reliability-critical embedded systems.

FAQ

Can 74LVCH16541ADGG,51 operate with VCC = 1.2 V while driving 5 V-tolerant loads?

Yes. At VCC = 1.2 V, the device maintains full 5.5 V tolerance on inputs and outputs in 3-state mode per Table 4 (Limiting Values). Output drive capability is reduced (IO = ±4 mA typical), but logic thresholds remain valid, and bus hold remains functional - enabling ultra-low-power standby modes with live bus presence.

What is the maximum clock/data rate supported by this buffer?

The device does not have an internal clock; its speed is governed by propagation delay (tpd ≤ 5.5 ns at VCC = 3.3 V) and transition rate limits (Δt/ΔV ≤ 10 ns/V at VCC = 2.7–3.6 V). This supports clean signal transmission up to ~100 MHz for short traces with proper termination and layout.

How does bus hold behave when VCC = 0 V?

Bus hold remains active even when VCC = 0 V, provided input voltage is within -0.5 V to 5.5 V (Table 4). The circuit draws no supply current in this state and sustains the last valid logic level on each input, preventing undefined states during power sequencing or brown-out conditions.

Are all 48 pins electrically assigned in the TSSOP48 package?

Yes. All 48 pins are functionally assigned: 32 I/O (16 inputs + 16 outputs), 4 output enables, 4 VCC, 8 GND. No NC (no-connect) or dummy pins exist - every pin serves a defined electrical role per Figure 2 and Table 2 in the datasheet.