NXP Semiconductors 74LVT162373DGG,118

Overview

74LVT162373DGG,118 from Nexperia is a 3.3 V, 16-bit transparent D-type latch with integrated 30 Ω series output termination resistors and non-inverting 3-state bus-compatible outputs. It functions as two independent 8-bit latches or one unified 16-bit latch, operates across –40 °C to +85 °C, and delivers ±12 mA drive capability. It is used in memory address drivers, clock distribution networks, and high-noise-margin bus interfaces.

For engineers reviewing the 74LVT162373DGG,118 datasheet, 74LVT162373DGG,118 pinout, 74LVT162373DGG,118 application, or 74LVT162373DGG,118 equivalent, key selection considerations include its dual-latch architecture, on-die 30 Ω termination eliminating external resistors, bus-hold inputs for floating-pin immunity, and TTL-level compatibility with 5 V systems.

Technical Context

This BiCMOS device implements two independent 8-bit transparent latches, each controlled by dedicated Latch Enable (1LE/2LE) and Output Enable (1OE/2OE) inputs. Its internal structure supports simultaneous or staggered latching and tri-state control per 8-bit bank.

The 30 Ω series resistor embedded in both HIGH- and LOW-state output paths suppresses signal reflections and reduces switching noise without requiring external termination. Bus-hold circuitry on all data inputs maintains valid logic states when inputs are unconnected, removing need for external pull-ups.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch - optimized for high-density PCB layouts with thermal and mechanical reliability in automated SMT assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16373DGGR and 74ALVCH162373T, the 74LVT162373DGG,118 uniquely combines on-die termination, bus-hold, and 5 V-tolerant inputs-reducing component count and improving robustness in mixed-voltage industrial bus systems without sacrificing timing performance.

Availability

74LVT162373DGG,118 is available at Aetrix Electronics and suitable for memory address buffering, clock distribution networks, industrial backplane interfaces, and hot-swappable module control requiring stable component supply across extended temperature ranges.

Supply support for 74LVT162373DGG,118 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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and computing markets.

The 74LVT family targets high-speed, low-voltage bus interface applications where noise immunity, mixed-voltage interoperability, and space-constrained packaging are critical design requirements.

FAQ

Can 74LVT162373DGG,118 be used with a 5 V microcontroller driving its inputs?

Yes. All data and control inputs are 5 V tolerant, accepting VI up to 5.5 V while operating from a 3.3 V VCC supply. This enables direct connection to legacy 5 V controllers without level-shifting circuitry, verified per Table 5 (VI input voltage range) and Table 6 (VIH/VIL thresholds).

What is the purpose of the 30 Ω series resistance in each output?

The 30 Ω resistor is integrated into both HIGH- and LOW-state output paths to dampen signal reflections on transmission lines, reducing overshoot, undershoot, and EMI in high-speed bus applications. It eliminates the need for eight external series resistors per 8-bit bank, as confirmed in Section 1 General Description and Figure 4 schematic.

Does this device support hot insertion in live backplane systems?

Yes. It features live insertion/extraction support via power-up 3-state behavior and latch-enable-controlled output staging. During power ramp, outputs remain in high-impedance state until VCC stabilizes, preventing bus contention-documented in Section 2 Features and validated by IO(pu/pd) test data in Table 6.

How does bus-hold functionality affect unused input pins?

Bus-hold circuitry actively maintains the last valid logic state on all data inputs (1D0–1D7, 2D0–2D7) when left floating, drawing ±75 μA to ±135 μA (Table 6). This prevents undefined states, reduces susceptibility to noise, and removes need for external pull-up/down resistors, as specified in Section 2 Features and Table 2 Pin Description.