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ESD protection, TVS, filtering and signal conditioning

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Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

74HC688DB

8-bit magnitude comparator

The 74HC688 is an 8-bit magnitude comparator. It performs comparisons of two 8-bit binary or BCD words. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

This product has been discontinued

Alternatives

Features and benefits

  • Compare two 8-bit words

  • Wide supply voltage range from 2.0 V to 6.0 V

  • CMOS input levels

  • CMOS low power dissipation

  • High noise immunity

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

  • Complies with JEDEC standards

    • JESD8C (2.7 V to 3.6 V)

    • JESD7A (2.0 V to 6.0 V)

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

All type numbers in the table below are discontinued.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74HC688DB 74HC688DB,112
(935188760112)		 Obsolete no package information
74HC688DB,118
(935188760118)		 Obsolete

Environmental information

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS RHF-indicator
74HC688DB 74HC688DB,112 74HC688DB rohs rhf rhf
74HC688DB 74HC688DB,118 74HC688DB rohs rhf rhf
Quality and reliability disclaimer

Series

Documentation (4)

File name Title Type Date
74HC688 8-bit magnitude comparator Data sheet 2024-08-05
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
D12_PC_sch_ver2_0 D12_PC_sch_ver2_0 Other type 2023-09-12
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31

Support

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Models

No documents available

PCB Symbol, Footprint and 3D Model

Model Name Description

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet