STMicroelectronics 74VHC132TTR

Overview

74VHC132TTR from STMicroelectronics is a quad 2-input Schmitt-trigger NAND gate in TSSOP-14 package, operating from 2V to 5.5V, with 3.9 ns typical propagation delay at 5V, 1V typical hysteresis at 4.5V, and ±8 mA symmetrical output drive. It enables robust signal conditioning in mixed-voltage digital interfaces, especially for slow-rising noise-prone control lines in industrial I/O modules.

For engineers reviewing the 74VHC132TTR datasheet, 74VHC132TTR pinout, 74VHC132TTR application, or 74VHC132TTR equivalent, key selection criteria include input hysteresis voltage (V_H = 0.4–1.4 V), power-down input protection (0–7 V tolerant), and rail-to-rail input compatibility across 3.3 V/5 V domains.

Technical Context

The 74VHC132TTR implements four independent Schmitt-trigger NAND gates using sub-micron C2MOS technology, delivering precise input threshold separation (V_T+ = 3.15 V, V_T− = 1.35 V at V_CC = 4.5 V) and 1.4 V hysteresis. Its inputs accept voltages up to 7 V regardless of supply, enabling safe level translation between 5 V and 3 V logic without external clamping.

All gates feature balanced t_PLH/t_PHL propagation delays (≤9.0 ns at 5 V, CL = 15 pF), low dynamic noise (V_OLP ≤ 0.8 V), and ESD immunity of 2 kV HBM. Power-down protection ensures zero current flow when V_CC = 0 V, preventing back-driving of supply rails.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.05 mm max height, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV132APWR and MC74VHC132DT, the 74VHC132TTR delivers superior noise immunity (1.4 V hysteresis vs. 0.5 V) and smaller board area (TSSOP-14), making it optimal for compact, EMI-prone industrial controllers where signal integrity outweighs cost sensitivity.

Availability

74VHC132TTR is available at Aetrix Electronics and suitable for industrial I/O modules, automotive body control units, USB-C accessory detection, and medical sensor interface designs requiring stable component supply and long-term manufacturability.

Supply support for 74VHC132TTR 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, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing and broad portfolio coverage.

The 74VHC series targets high-speed, low-power CMOS logic replacement for legacy 74-series devices, emphasizing mixed-voltage interoperability, ESD robustness, and extended temperature operation (−55 °C to +125 °C).

FAQ

Can the 74VHC132TTR operate with V_CC = 2.3 V while accepting 5 V inputs?

Yes. Per absolute maximum ratings and recommended operating conditions, inputs tolerate −0.5 V to +7.0 V independent of V_CC. At V_CC = 2.3 V, the device remains functional with 5 V inputs, though output swing is limited to 0–2.3 V. Thresholds scale proportionally: V_T+ ≈ 1.6 V, V_T− ≈ 0.6 V, providing ~1.0 V hysteresis.

Does the 74VHC132TTR require external pull-up resistors on inputs?

No. Inputs are internally protected with diode clamps and have negligible leakage (±1 µA max), eliminating need for pull-ups in most configurations. Pull-ups may still be used for fail-safe default states in open-drain or floating-sense applications, but are not required for basic Schmitt-trigger operation or ESD safety.

What is the maximum capacitive load the 74VHC132TTR can drive without exceeding t_PD spec?

At V_CC = 5 V, the AC specifications guarantee t_PD ≤ 9.0 ns for CL = 15 pF and ≤ 11.0 ns for CL = 50 pF. Driving >50 pF increases delay nonlinearly and may cause ringing; for loads >50 pF, add series termination or buffer stages. Measured C_IN = 10 pF, so net trace + load capacitance should stay ≤40 pF for timing-critical paths.

Is the 74VHC132TTR pin-compatible with the 74HC132?

Yes - identical pinout and logic function per gate. However, 74VHC132TTR offers improved parameters: lower ICC (2 µA vs. 4 µA), tighter hysteresis control, enhanced latch-up immunity, and wider V_CC range (2–5.5 V vs. 2–6 V). It is a direct drop-in upgrade for 74HC132 in new designs requiring better noise immunity or lower quiescent current.