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Product Detailed Parameters
- Description：IC GATE OR 4CH 2-INP 14SOIC
- Series：74AHC
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Logic Type：OR Gate
- Number of Circuits：4
- Number of Inputs：2
- Features：-
- Voltage - Supply：2V ~ 5.5V
- Current - Quiescent (Max)：2 µA
- Current - Output High, Low：8mA, 8mA
- Input Logic Level - Low：0.5V ~ 1.65V
- Input Logic Level - High：1.5V ~ 3.85V
- Max Propagation Delay @ V, Max CL：7.5ns @ 5V, 50pF
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-SOIC
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74AHC32D is a quadruple 2-input positive-OR gate in the AHC logic series, housed in a 14-pin SOIC package. It operates within a supply voltage range of 2V to 5.5V and supports an operating temperature range of -40°C to +125°C. The device provides ±8mA output drive at 5V and features low power consumption with a maximum ICC of 10µA. Latch-up performance exceeds 250mA per JESD 17.
Feature Summary
- Performs Boolean OR function Y = A + B for four independent channels
- Features balanced CMOS push-pull outputs for similar sourcing and sinking currents
- Includes standard CMOS inputs requiring termination to prevent undefined states
- Equipped with negative clamping diodes on inputs and dual clamping diodes on outputs
Applications
- Enable or disable digital signals
- Controlling indicator LEDs
- Translation between communication modules and system controllers
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current orderable addendum. The base model SN74AHC32D is listed as obsolete; confirm availability of active alternatives such as SN74AHC32DR or SN74AHC32DBR. Ensure the selected variant matches the required thermal metrics and packaging specifications for the target application.
Selection Notes
Select this component for designs requiring quadruple 2-input OR logic within the AHC family. Verify that the load capacitance remains at or below 50pF to maintain specified switching characteristics. Ensure unused inputs are terminated to VCC or GND to prevent excessive power consumption and oscillation due to high input impedance.
Part Context
This device belongs to the SNx4AHC32 family, which includes military-grade SN54 variants and commercial SN74 versions. The D suffix specifically denotes the 14-pin Small Outline Integrated Circuit (SOIC) package. The family shares identical logical functionality but varies in environmental ratings and physical form factors.
Replacement Considerations
SN74AHC32DR
FAQ
How should unused inputs be handled?
Unused inputs must not be left floating. They should be terminated directly to VCC or ground, or connected via a pull-up/pull-down resistor to ensure valid logic levels.
What is the recommended bypass capacitor value?
A 0.1-μF capacitor is recommended for each VCC terminal, placed physically close to the device to prevent power disturbances.
