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SN74HC688N The SN74HC688N is an 8-bit identity comparator from Texas Instruments with active-low A=B output. It operates from 2 V to 6 V with 80 µA max supply current and 14 ns typical propagation delay.
Mfr Part #:

SN74HC688N

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The SN74HC688N is an 8-bit identity comparator from Texas Instruments with active-low A=B output. It operates from 2 V to 6 V with 80 µA max supply current and 14 ns typical propagation delay.
✓ Total Stock: 4,003 pcs
$ Price Range: $0.50

SN74HC688N Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
4,000 pcs
On Request
4000 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
3 pcs
On Request
3 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SN74HC688N Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Max Propagation Delay @ V, Max CL
Mounting Type
Number of Bits
Operating Temperature
Output
Output Function
Propagation Delay
Supplier Device Package
Supply Current
Type
Voltage
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SN74HC688N Description

Short technical summary and product information.

The SN74HC688N is an 8-bit identity comparator from Texas Instruments designed to compare two 8-bit binary words and provide an active-low output when they are equal. It operates over a wide supply voltage range of 2 V to 6 V, making it suitable for battery-powered and low-voltage logic systems.

 

Key electrical characteristics include a maximum supply current of 80 µA, a typical propagation delay of 14 ns, and a maximum input current of 1 µA. The output can sink or source up to ±4 mA at 5 V, enabling direct drive of standard logic inputs.

 

The device is housed in a 20-pin DIP package, suitable for through-hole mounting on breadboards and prototyping boards. Its low power consumption and wide voltage range make it ideal for microcontroller interfacing, address decoding, and data validation applications.

SN74HC688N Quick Information

Product Type: Identity Comparator
Canonical Name: SN74HC688N 8-Bit Identity Comparator
Subcategory: Comparators

SN74HC688N Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SN74HC688N Estimated Pricing

Qty Low High
1+ $0.50 $0.50

Estimated market price range - modelled values for guidance only, not live distributor offers.

SN74HC688N Features

  • 8-bit identity comparator with active-low output.
  • Wide operating voltage range 2 V to 6 V.
  • Low supply current 80 µA maximum.
  • Typical propagation delay of 14 ns.
  • ±4 mA output drive at 5 V.

SN74HC688N Applications

  • Microcontroller address decoding circuits.
  • Data validation and comparison systems.
  • Battery-powered portable logic devices.
  • Industrial control and monitoring equipment.

SN74HC688N FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the SN74HC688N?

The operating voltage range is 2 V to 6 V.

What is the maximum supply current of the SN74HC688N?

The maximum supply current is 80 µA.

What is the typical propagation delay of the SN74HC688N?

The typical propagation delay is 14 ns.

What is the output function of the SN74HC688N?

The output function is A=B with active-low output.

How many bits does the SN74HC688N compare?

It compares 8 bits.

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