74HCT688D The NXP 74HCT688D is an 8-bit magnitude comparator designed to compare two 8-bit binary or BCD words. It offers standard output capability and is pin-compatible with LSTTL.
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74HCT688D

Available from 1 distributors
Mfr Name: HAR
HAR
The NXP 74HCT688D is an 8-bit magnitude comparator designed to compare two 8-bit binary or BCD words. It offers standard output capability and is pin-compatible with LSTTL.
✓ Total Stock: 842 pcs
$ Price Range: $2.01

74HCT688D Available from 1 distributor

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74HCT688D Specifications Quick View

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74HCT688D Description

Short technical summary and product information.

The 74HCT688D from NXP is a high-speed Si-gate CMOS device that functions as an 8-bit magnitude comparator. It is capable of comparing two 8-bit binary or BCD words, with its output indicating when P equals Q.

 

This component features a typical propagation delay of 7ns from input to output (P=Q) and 8ns when triggered by the enable input. It has a typical input capacitance of 3.5pF and a power dissipation capacitance of 30pF per package. The device is specified in compliance with JEDEC standard no. 7A and is pin-compatible with low-power Schottky TTL (LSTTL).

 

Designed for general-purpose digital logic applications, the 74HCT688D is suitable for systems requiring binary or BCD word comparison. Its MSI (Medium Scale Integration) category indicates a moderate level of complexity. The device is typically supplied in a DIP package.

74HCT688D Quick Information

Product Type: 8-bit Magnitude Comparator
Series: 74HC/HCT
Canonical Name: 74HCT688D 8-bit Magnitude Comparator
Subcategory: 8-bit

74HCT688D Compliance

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

74HCT688D Estimated Pricing

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1+ $2.01 $2.01

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

74HCT688D Features

  • Compares two 8-bit binary or BCD words.
  • Typical propagation delay of 7ns (Pn, Qn to P=Q).
  • Typical propagation delay of 8ns (E to P=Q).
  • Standard output capability.
  • Pin compatible with LSTTL.

74HCT688D Applications

  • Used in digital comparison circuits for 8-bit words.
  • Suitable for logic level matching in microcontroller systems.
  • Ideal for timing and delay applications in digital circuits.
  • Applicable in signal integrity and data validation systems.

74HCT688D FAQs

6 frequently asked questions generated from this part’s specifications.
What is the typical propagation delay for the 74HCT688D?

The typical propagation delay from Pn, Qn to P=Q is 7ns, and from the enable input (E) to P=Q is 8ns.

What is the input capacitance of the 74HCT688D?

The typical input capacitance is 3.5pF.

What is the power dissipation capacitance per package for the 74HCT688D?

The typical power dissipation capacitance per package is 30pF.

What is the RoHS status of the 74HCT688D?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the 74HCT688D?

The Moisture Sensitivity Level is 1 Unlimited.

What is the REACH status for the 74HCT688D?

The REACH status is REACH Unaffected.

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