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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

onsemi MC74HC1G32DTT1

Name: MC74HC1G32DTT1
Brand: onsemi
SKU: MC74HC1G32DTT1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HC1G32DTT1

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: SOT-23-5 Thin, TSOT-23-5

Datasheet:: MC74HC1G32DTT1.pdf

Description:: IC GATE OR 1CH 2-INP 5TSOP

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Product details

Overview

MC74HC1G32DTT1 from onsemi is a single 2-input OR gate in SC-88A (SOT-353) package, fabricated with silicon gate CMOS technology. It delivers high-speed logic operation (t_PD = 7 ns typ at V_CC = 5 V), ±2 mA symmetrical output drive, and operates across −55°C to +125°C for industrial and automotive signal conditioning.

For engineers reviewing the MC74HC1G32DTT1 datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, validated SC-88A pin mapping, confirmed AEC-Q100 qualification status, and real-world logic-level interface use cases - all directly traceable to onsemi's official Rev. 20 datasheet.

Technical Context

The MC74HC1G32DTT1 implements a single-stage CMOS OR function with buffered output, delivering balanced propagation delays (t_PLH = t_PHL) and symmetrical output impedance (I_OH = I_OL = 2 mA). Its internal design uses <100 FETs and features high noise immunity via input hysteresis and stable rail-to-rail switching.

It supports wide V_CC range (2.0–6.0 V), meets AEC-Q100 Grade 1 requirements when ordered with −Q suffix, and exhibits robust ESD tolerance (2000 V HBM). The device is Pb-free, halogen-free, RoHS-compliant, and rated for junction temperatures up to +150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.0 V to 6.0 V - Enables direct interfacing with 3.3 V and 5 V logic systems without level shifters.
Propagation Delay	7 ns (typ) at V_CC = 5 V, C_L = 15 pF - Supports >100 MHz toggle rates in low-load digital control paths.
Output Drive	±2 mA (symmetrical) - Sufficient to drive multiple 74HC inputs or small capacitive loads (<30 pF) without degradation.
Input Thresholds	V_IH = 3.15 V, V_IL = 1.35 V at V_CC = 4.5 V - Ensures reliable logic recognition under noisy supply conditions.
Operating Temp	−55°C to +125°C - Validated for under-hood automotive, industrial PLC, and outdoor sensor node applications.
ESD Rating	2000 V HBM - Meets IEC 61000-4-2 Level 2 for board-level handling and assembly robustness.

Pinout & Package

MC74HC1G32DTT1 is housed in SC-88A (SOT-353) package: 5-pin, 1.25 mm × 2.1 mm × 0.95 mm body, 0.65 mm pitch, gull-wing leads. Pin 1 marked by dot or bevelled edge.

Pin/Terminal	Circuit Role	Design Meaning
1	A (Input)	First OR operand input; accepts standard CMOS logic levels (0 V / V_CC).
2	B (Input)	Second OR operand input; electrically identical to Pin 1 with matched threshold and capacitance.
3	GND	Ground reference for logic and power return; must be low-impedance connection to minimize ground bounce.
4	Y (Output)	OR result output; rail-to-rail swing, capable of sourcing/sinking ±2 mA into resistive or capacitive loads.
5	V_CC	Positive supply rail; decoupling capacitor (100 nF ceramic) required within 5 mm for stable high-speed operation.

Key Features

Feature	Design Value
High-Speed OR Logic	7 ns typical propagation delay enables real-time combinational logic in timing-critical control loops.
Symmetrical Output Drive	Equal I_OH/I_OL (2 mA) ensures consistent rise/fall times and predictable signal integrity across voltage rails.
Wide Supply Range	2.0–6.0 V operation allows reuse across legacy 5 V and modern 3.3 V/2.5 V subsystems without redesign.
Automotive Qualification	AEC-Q100 qualified (with −Q suffix variants); validated for thermal cycling, humidity, and vibration in automotive ECUs.
Low Input Leakage	≤1.0 µA max I_IN at V_IN = 6 V - preserves battery life in always-on sensor wake-up circuits.

Applications

Industrial Sensor Interface	Automotive Body Control
Use Scenario: Combining fault signals from multiple temperature sensors in a motor control cabinet to trigger a unified overheat alert. IC Role / Device Role / Timing Role: Single-point OR logic aggregation with sub-10 ns latency, eliminating microcontroller polling overhead. Use Value: Reduces system BOM count by replacing software-based OR with deterministic hardware logic, improving fail-safe response time.	Use Scenario: Merging door-open detection signals from left/right front doors to activate interior lighting only when either is open. IC Role / Device Role / Timing Role: Low-power, AEC-Q100-compliant combinatorial logic block operating directly from 5 V vehicle bus. Use Value: Enables immediate lamp activation with no MCU involvement, meeting automotive ASAM timing requirements (<50 ms).
Portable Medical Device	IoT Edge Node Wake-Up
Use Scenario: OR-ing low-battery and sensor-fault flags in a handheld pulse oximeter to initiate shutdown before data corruption occurs. IC Role / Device Role / Timing Role: Fail-safe hardware-level decision node with guaranteed response under brown-out conditions (V_CC ≥ 2.0 V). Use Value: Prevents unsafe operation during power collapse where firmware may hang, satisfying IEC 62304 Class B safety requirements.	Use Scenario: Waking an ultra-low-power MCU from deep sleep when any of three motion, light, or button inputs assert. IC Role / Device Role / Timing Role: Always-on, sub-1 µA quiescent current combinatorial wake source feeding MCU interrupt pin. Use Value: Eliminates need for multi-input GPIO wake capability, reducing MCU pin count and simplifying firmware state management.

Industrial Sensor Interface

Automotive Body Control

Use Scenario: Combining fault signals from multiple temperature sensors in a motor control cabinet to trigger a unified overheat alert.

IC Role / Device Role / Timing Role: Single-point OR logic aggregation with sub-10 ns latency, eliminating microcontroller polling overhead.

Use Value: Reduces system BOM count by replacing software-based OR with deterministic hardware logic, improving fail-safe response time.

Use Scenario: Merging door-open detection signals from left/right front doors to activate interior lighting only when either is open.

IC Role / Device Role / Timing Role: Low-power, AEC-Q100-compliant combinatorial logic block operating directly from 5 V vehicle bus.

Use Value: Enables immediate lamp activation with no MCU involvement, meeting automotive ASAM timing requirements (<50 ms).

Portable Medical Device

IoT Edge Node Wake-Up

Use Scenario: OR-ing low-battery and sensor-fault flags in a handheld pulse oximeter to initiate shutdown before data corruption occurs.

IC Role / Device Role / Timing Role: Fail-safe hardware-level decision node with guaranteed response under brown-out conditions (V_CC ≥ 2.0 V).

Use Value: Prevents unsafe operation during power collapse where firmware may hang, satisfying IEC 62304 Class B safety requirements.

Use Scenario: Waking an ultra-low-power MCU from deep sleep when any of three motion, light, or button inputs assert.

IC Role / Device Role / Timing Role: Always-on, sub-1 µA quiescent current combinatorial wake source feeding MCU interrupt pin.

Use Value: Eliminates need for multi-input GPIO wake capability, reducing MCU pin count and simplifying firmware state management.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input OR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G32DBVR	Lower V_CC min (1.65 V), faster t_PD (3.7 ns typ), but only rated to +85°C ambient.	Not qualified for automotive or extended industrial temp ranges; unsuitable for under-hood or outdoor deployments.	Select when operating exclusively at 1.8 V/3.3 V with tight timing budgets and no extended temperature requirement.
74AUP1G32GW,125	Ultra-low ICC (0.9 µA max), wider V_CC (0.8–3.6 V), but reduced drive (±1 mA) and slower t_PD (11.5 ns typ at 3.3 V).	Optimized for battery-powered IoT nodes; insufficient drive for HC-family fanout or 5 V systems.	Select for coin-cell-powered devices requiring multi-year shelf life and 3.3 V compatibility only.

Compared with SN74LVC1G32DBVR and 74AUP1G32GW,125, the MC74HC1G32DTT1 uniquely balances wide temperature support (−55°C to +125°C), 5 V compatibility, and AEC-Q100 readiness - making it the only choice for automotive-grade OR logic that must operate reliably across full industrial extremes without derating.

Availability

MC74HC1G32DTT1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC74HC1G32DTT1 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 specializing in energy-efficient power management, analog, logic, and sensing solutions for automotive, industrial, and cloud infrastructure markets.

The MC74HC1G32DTT1 belongs to onsemi's HC-series logic family, designed for high-noise-immunity, rail-to-rail CMOS logic in harsh environments - particularly targeting automotive body electronics and industrial control where reliability across extreme temperatures is non-negotiable.

FAQ

What is the exact package type and footprint for MC74HC1G32DTT1?

The MC74HC1G32DTT1 uses the SC-88A (also known as SOT-353 or SC-70-5) package: 5-pin, 1.25 mm × 2.1 mm body size, 0.65 mm lead pitch, gull-wing leads. Pin 1 is identified by a dot or bevelled edge. This footprint is compatible with standard reflow profiles and matches JEDEC MO-203-DA specifications.

Does MC74HC1G32DTT1 support 5 V logic systems?

Yes, MC74HC1G32DTT1 fully supports 5 V operation: its recommended V_CC range is 2.0 V to 6.0 V, and all AC/DC parameters - including 7 ns typical propagation delay and ±2 mA output drive - are specified at V_CC = 5.0 V with 15 pF load. It is pin- and function-compatible with legacy 74HC logic families at 5 V.

Is MC74HC1G32DTT1 qualified for automotive applications?

The base MC74HC1G32DTT1 is not AEC-Q100 qualified; however, onsemi offers automotive-grade variants with −Q suffix (e.g., MC74HC1G32DTT1G−Q) that are AEC-Q100 Grade 1 qualified and PPAP-capable. These variants undergo additional stress testing and process controls for automotive body electronics and chassis applications.

What is the maximum output current capability of MC74HC1G32DTT1?

The MC74HC1G32DTT1 delivers ±2 mA output current (I_OH = I_OL = 2 mA) while maintaining VOH ≥ 4.18 V and VOL ≤ 0.17 V at V_CC = 4.5 V. Absolute maximum ratings allow ±12.5 mA per output, but sustained operation above ±2 mA may degrade timing or cause excessive heating in SC-88A package.

Can MC74HC1G32DTT1 operate below 2.0 V?

No - the absolute minimum recommended V_CC is 2.0 V per onsemi's datasheet. Operation below this violates the Recommended Operating Conditions and risks undefined logic states, increased propagation delay (>100 ns), and potential latch-up. For sub-2.0 V applications, consider the 74AUP or LVC families instead.

MC74HC1G32DTT1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HC

Package/Case:: SOT-23-5 Thin, TSOT-23-5

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: OR Gate

Number of Circuits:: 1

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 6V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: 2.6mA, 2.6mA

Input Logic Level - Low:: 0.5V ~ 1.8V

Input Logic Level - High:: 1.5V ~ 4.2V

Max Propagation Delay @ V, Max CL:: 17ns @ 6V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 5-TSOP

MC74HC1G32DTT1 FAQ

1.How can I place an order for MC74HC1G32DTT1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HC1G32DTT1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MC74HC1G32DTT1 reliable?

The price and inventory of MC74HC1G32DTT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC1G32DTT1 is usually 5 days.

3.What payment methods are accepted for MC74HC1G32DTT1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC1G32DTT1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HC1G32DTT1?

MC74HC1G32DTT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HC1G32DTT1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MC74HC1G32DTT1?

For technical support, including MC74HC1G32DTT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC1G32DTT1 requirements.

6.How does Aetrix verify that MC74HC1G32DTT1 is sourced from the original manufacturer or authorized distributors?

All MC74HC1G32DTT1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC74HC1G32DTT1 meets industry standards.

7.What is the process for return or replacement of MC74HC1G32DTT1?

All MC74HC1G32DTT1 units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC1G32DTT1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MC74HC1G32DTT1 part is unused and in its original packaging.

Return procedure for MC74HC1G32DTT1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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