onsemi MC74VHC132DR2

Overview

MC74VHC132DR2 from onsemi is a quad 2-input NAND Schmitt trigger IC in SOIC-14 package, operating from 2.0 V to 5.5 V, with 4.9 ns typical propagation delay at 5.0 V and hysteresis thresholds (VT+ = 3.85 V, VT− = 1.65 V at VCC = 5.5 V) enabling robust noise immunity and slow-signal reception. It serves as a level-shifting line receiver in mixed-voltage digital interfaces.

For engineers reviewing the MC74VHC132DR2 datasheet, pinout, applications, or equivalent options, key selection criteria include Schmitt-trigger input hysteresis, CMOS-level compatibility (3.3 V/5.0 V), output drive capability (±8 mA), thermal resistance (116 °C/W), and Pb-free SOIC-14 packaging per RoHS.

Technical Context

The MC74VHC132DR2 implements four independent Schmitt-trigger NAND gates using silicon-gate CMOS technology, achieving TTL-compatible speed with CMOS power efficiency. Its three-stage internal architecture includes a buffer output stage for high noise immunity and stable switching.

Input structures tolerate up to 5.5 V, supporting interfacing between 3 V and 5 V systems; outputs deliver full 5.0 V CMOS-level swings and are compatible with standard CMOS logic levels - not TTL - distinguishing it from the MC74VHCT132A variant.

Key Specifications

Pinout & Package

MC74VHC132DR2 is housed in a 14-lead SOIC package (Case 751A), 8.75 mm × 3.90 mm × 1.75 mm, with standard gull-wing leads and Pb-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC74VHC132DTR2G and SN74LV132APWR, the MC74VHC132DR2 offers optimal balance of SOIC-14 manufacturability, 5.5 V input tolerance, and proven noise immunity - critical for legacy 5 V system upgrades and mixed-voltage industrial controls.

Availability

MC74VHC132DR2 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control, and medical instrument front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MC74VHC132DR2 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHC132DR2 belongs to the VHC (Very High Speed CMOS) logic family, designed specifically for low-power, high-noise-immunity digital signal conditioning in mixed-voltage embedded systems.

FAQ

What is the maximum input voltage the MC74VHC132DR2 can tolerate?

The MC74VHC132DR2 supports DC input voltages from −0.5 V to +6.5 V, independent of VCC. This allows safe interfacing with 5 V signals even when powered from 3.3 V, and protects against transient overvoltage events such as hot insertion or supply sequencing mismatches - a key advantage over standard CMOS logic without overvoltage-tolerant inputs.

Does the MC74VHC132DR2 support true 3.3 V to 5.0 V level translation?

Yes, the MC74VHC132DR2 provides true bidirectional level translation: its inputs accept 3.3 V logic levels while its outputs swing rail-to-rail up to 5.0 V when VCC = 5.0 V. This enables direct connection between 3.3 V microcontrollers and 5.0 V peripherals without external level shifters - confirmed by its full 5.0 V CMOS output swing and 5.5 V input tolerance specifications.

Is the MC74VHC132DR2 pin-compatible with the MC74VHCT132A?

Yes, the MC74VHC132DR2 is pin- and function-compatible with the MC74VHCT132A, sharing identical SOIC-14 pinout and logic behavior. However, the MC74VHCT132A features TTL-compatible inputs (VIH = 2.0 V min), whereas the MC74VHC132DR2 requires CMOS-level inputs (VIH ≈ 0.7×VCC). Substitution requires verifying input source logic family compatibility.

What is the hysteresis voltage (VH) of the MC74VHC132DR2 at 5.0 V supply?

At VCC = 5.0 V, the MC74VHC132DR2 exhibits a typical hysteresis voltage (VH) of 0.40 V, calculated as VT+ − VT− (3.15 V − 2.75 V). This value increases to 0.50 V at VCC = 5.5 V and remains stable across temperature (−55 °C to +125 °C), ensuring consistent noise margin in industrial and automotive environments.

Can unused inputs on the MC74VHC132DR2 be left floating?

No - unused inputs on the MC74VHC132DR2 must be tied to a valid logic level (VCC or GND) to prevent undefined output states, increased power consumption, and potential oscillation. The datasheet explicitly mandates this in the Recommended Operating Conditions table (Note 5); floating inputs may cause excessive ICC due to intermediate biasing of internal Schmitt-trigger circuitry.