NXP Semiconductors 74LVC373APW,112

Overview

74LVC373APW,112 from Nexperia is an octal D-type transparent latch with 3-state outputs, latch enable (LE) and output enable (OE) controls, 5 V-tolerant I/O, 1.2 V to 3.6 V supply operation, and Schmitt-trigger inputs for noise immunity - used in bus interface, data buffering, and level translation between 3.3 V and 5 V subsystems.

For engineers reviewing the 74LVC373APW,112 datasheet, 74LVC373APW,112 pinout, 74LVC373APW,112 application, or 74LVC373APW,112 equivalent, this device supports mixed-voltage system design, partial power-down via IOFF, high-impedance output control, and precise timing-critical latching in industrial and embedded control logic.

Technical Context

The 74LVC373APW implements eight independent D-type latches with transparent mode when LE is HIGH and edge-triggered capture on LE HIGH-to-LOW transition. Its dual enable architecture separates data capture (LE) from output drive control (OE), enabling independent timing management of data registration and bus release.

Schmitt-trigger inputs ensure robust signal integrity with slow-rising waveforms, while the IOFF circuit guarantees zero backflow current during VCC = 0 V conditions - critical for hot-swap and power-gating applications. Input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5 V TTL logic without external level shifters.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal transparent latch applications.

Compared with SN74LVC373APWR, the 74LVC373APW,112 offers lower static power and tighter propagation delay consistency; versus 74LVCH373APW,118, it avoids bus-hold overhead where inputs are actively driven, simplifying timing analysis and reducing standby current.

Availability

74LVC373APW,112 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test instrumentation requiring stable component supply across extended temperature ranges and mixed-voltage interfaces.

Supply support for 74LVC373APW,112 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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC373A belongs to Nexperia's advanced LVC logic family, engineered for low-voltage operation, 5 V tolerance, and robust performance in thermally demanding and electrically noisy environments.

FAQ

What is the maximum input voltage the 74LVC373APW,112 can tolerate when VCC = 1.8 V?

The device tolerates input voltages up to 5.5 V regardless of VCC level, as confirmed in Table 5 (Recommended Operating Conditions) and Table 4 (Limiting Values). This allows safe interfacing with 5 V TTL outputs even when powered from 1.8 V, without external clamping or level-shifting circuitry.

Does the 74LVC373APW,112 support hot insertion when VCC is off?

Yes - its IOFF circuitry disables outputs and limits leakage to <±10 μA when VCC = 0 V, preventing back-current flow from live 5 V buses into the unpowered IC. This behavior is explicitly verified in Table 9 (Static Characteristics) and supports hot-swap compliance in modular backplane designs.

How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?

Schmitt-trigger inputs provide ≥0.3 V hysteresis (per Table 6), meaning the threshold for rising-edge detection (~0.65×VCC) differs from falling-edge detection (~0.35×VCC). This prevents multiple toggles on slow or noisy edges - critical for reliable operation with mechanical switches, long cables, or EMI-prone environments.

Can OE and LE be tied together for simplified control?

No - OE and LE serve independent functions: LE controls data capture (HIGH = transparent, LOW = hold), while OE controls output driver state (LOW = active, HIGH = high-Z). Tying them eliminates independent timing control and risks metastability or bus contention; the functional table (Table 3) confirms these signals operate orthogonally.