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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, click here for discontinuation information and replacement parts.

Alternatives

Features and benefits

  • Compare two 8-bit words

  • Wide supply voltage range from 2.0 to 6.0 V

  • CMOS input levels

  • Complies with JEDEC standard: no. 7A

  • ESD protection:

    • HBM JESD22-A114-F exceeds 2000 V

    • MM JESD22-A115-A exceeds 200 V

  • Multiple package options

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

Parametrics

Type number Product status Package name
74HC688DB End of life SSOP20

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

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. See the table Discontinuation information for more information.

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 2021-07-16
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