STMicroelectronics 74LVX132TTR

Overview

74LVX132TTR from STMicroelectronics is a low-voltage CMOS quad 2-input Schmitt NAND gate with 5V-tolerant inputs, operating from 2V to 3.6V supply, featuring 5.9ns typical propagation delay at 3.3V, 0.7V typical hysteresis, and ±4mA symmetrical output drive-used in noise-immune signal conditioning for 3.3V/5V mixed-voltage interface circuits.

For engineers reviewing the 74LVX132TTR datasheet, 74LVX132TTR pinout, 74LVX132TTR application, or 74LVX132TTR equivalent, key selection criteria include input hysteresis width (0.3–1.2V), 5V-tolerant input voltage range (0–5.5V), quiescent current (2µA max), output drive capability (4mA min), and TSSOP-14 package compatibility with legacy 74-series logic footprints.

Technical Context

The device implements four independent Schmitt-trigger NAND gates using sub-micron C2MOS technology, each with hysteresis thresholds (Vt+ = 2.2V, Vt− = 0.9V at VCC = 3.0V) enabling robust noise rejection on slow-rising/falling signals. Input protection accepts 0–7V regardless of VCC, supporting hot-swap and level-shifting between 5V and 3.3V domains.

All inputs feature power-down protection and 2kV ESD immunity; outputs deliver symmetrical |IOH| = IOL ≥ 4mA with balanced tPLH ≅ tPHL propagation delays. Dynamic noise parameters include VOLP = 0.3V (typ.) and VIHD/VILD = 2.2V/0.9V at 3.3V, ensuring reliable switching under transient-loaded conditions.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.9 × 6.4 mm body, 0.65 mm pitch, 14-pin surface-mount with exposed pad not present; compliant with JEDEC MO-153.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt NAND gate applications.

Compared with SN74LV132APWR and 74LVC132PW,118, the 74LVX132TTR uniquely combines 5V-tolerant inputs, sub-6ns speed, and ultra-low 2µA quiescent current-making it optimal for mixed-voltage, battery-sensitive, and noise-prone signal conditioning.

Availability

74LVX132TTR is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB power control circuits, portable keypad scan subsystems, and automotive body control modules requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVX132TTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power management devices, and discrete components for industrial, automotive, and consumer markets.

The 74LVX logic family targets low-voltage, low-power, mixed-signal interfacing applications-specifically engineered to bridge 5V legacy systems with emerging 3.3V and sub-3V digital platforms while maintaining noise immunity and timing integrity.

FAQ

Can 74LVX132TTR operate with VCC = 1.8V?

No. The recommended operating VCC range is 2.0V to 3.6V per datasheet Section "Recommended Operating Conditions". At 1.8V, input thresholds (Vt+ = 2.2V min) cannot be met, resulting in undefined logic states and potential functional failure. Data retention is specified down to 1.2V, but active operation requires ≥2.0V.

Is the 74LVX132TTR pin-compatible with standard 74HC132 in TSSOP-14?

Yes-pinout and logic function match the 74-series 132 family, including 74HC132. However, 74LVX132TTR has Schmitt-trigger inputs (unlike HC132's non-hysteresis inputs) and 5V-tolerant inputs (HC132 is not 5V-tolerant). Physical fit is identical, but electrical behavior differs significantly in noise immunity and voltage range.

What is the maximum capacitive load this device can drive reliably?

The datasheet specifies AC performance up to CL = 50pF (e.g., tPD = 6.5ns max at 3.3V). While not explicitly rated beyond that, the ±4mA output drive suggests reliable operation into ≤70pF loads at moderate frequencies (<10MHz), assuming controlled trace impedance and minimal stub length to avoid ringing or excessive slew degradation.

Does 74LVX132TTR require external pull-up or pull-down resistors on unused inputs?

No. All inputs include internal protection diodes and are 5V-tolerant, but they lack internal termination. Unused inputs must be tied to VCC or GND to prevent floating states and unintended switching. Leaving them unconnected risks increased ICC, noise susceptibility, and potential oscillation due to Schmitt-trigger sensitivity.