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Product Detailed Parameters
- Description：IC COMPARATOR IDENTITY 20TSSOP
- Series：74HC
- Mfr：Nexperia USA Inc.
- Package：Tube
- Type：Identity Comparator
- Number of Bits：8
- Output：Active Low
- Output Function：A=B
- Voltage - Supply：2V ~ 6V
- Current - Output High, Low：5.2mA, 5.2mA
- Max Propagation Delay @ V, Max CL：29ns @ 6V, 50pF
- Current - Quiescent (Iq)：8 µA
- Operating Temperature：-40°C ~ 125°C
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The 74HC688PW,112 is an 8-bit identity comparator manufactured by Nexperia USA Inc. It operates within a supply voltage range of 2.0 V to 6.0 V and supports surface mount mounting in a 20-TSSOP package with a width of 4.40 mm. The device functions as a digital logic component designed for comparing two 8-bit binary words. It is rated for an operating temperature range from -40°C to +125°C. The product status is listed as obsolete.
Feature Summary
- Performs parallel comparison of two 8-bit binary inputs to determine equality
- Provides a single output signal indicating whether the input values are identical
Applications
- Digital address decoding systems
- Data validation circuits requiring equality checks
- Control logic for verifying matched data pairs
Procurement Notes
This component is officially classified as obsolete by the manufacturer. Availability is limited to existing stock held by distributors or secondary market suppliers. Buyers should verify the authenticity of the source and check for potential manufacturing date code variations. Replacement planning is recommended due to the discontinued production status.
Selection Notes
Designers requiring this specific functionality must account for the obsolete status when selecting components for new products. Alternative solutions may involve using modern equivalents from the same family or different manufacturers that offer current availability. Verify pin compatibility and electrical specifications before substituting with other 8-bit comparators.
Part Context
This part belongs to the 74HC series of high-speed CMOS logic devices. The 74HC688 specifically denotes an 8-bit identity comparator function. The suffix PW indicates the TSSOP package type, while 112 refers to the specific tape and reel or bulk packaging configuration defined by Nexperia.
Replacement Considerations
Public confirmed substitute part numbers include 74HC688D,118 and 74HC688PW,118. These alternatives maintain the same logical function and pinout but may differ in packaging format or specific manufacturing lot details.
