DM74ALS169BN Binary Counter Equivalent & Substitute Parts

Part Overview

The DM74ALS169BN is a 4-bit binary counter IC manufactured by onsemi, designed for synchronous up/down counting applications with a maximum count rate of 40 MHz. This component operates within the 74ALS logic family and is housed in a 16-pin DIP package. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

DM74ALS169BN

onsemiIn Stock: 3504DM74ALS169BN Datasheet

Current PartRFQ

SN74ALS169BN

Texas InstrumentsIn Stock: 3491SN74ALS169BN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS169BN is determined by strict equivalence across the following critical parameters:

• Logic family and base product number (74ALS169)
• Functional specification: 4-bit binary counter with up/down capability
• Synchronous timing architecture with positive edge triggering
• Electrical performance: 40 MHz count rate, 4.5 V to 5.5 V supply voltage
• Physical form factor: 16-pin DIP package with 0.300" (7.62mm) pitch
• Through-hole mounting compatibility

The SN74ALS169BN from Texas Instruments meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS169BN from Texas Instruments is the direct parametric equivalent for the obsolete DM74ALS169BN. Both components share identical functional specifications, electrical characteristics, and physical packaging. The Texas Instruments variant offers the advantage of active product status, ensuring continued availability and compliance support. The SN74ALS169BN carries RoHS3 compliance certification, providing enhanced environmental and regulatory alignment for new designs and system upgrades.

For applications currently using the DM74ALS169BN, direct substitution with the SN74ALS169BN is supported without circuit modification, provided that the through-hole mounting footprint and 16-pin DIP package are retained in the PCB design.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS169BN replace the DM74ALS169BN in existing designs?

A: Yes. Both parts are parametrically equivalent across all functional, electrical, and physical specifications. Direct substitution is supported without design changes.

Q: Are there differences in pin configuration between these parts?

A: No. Both the DM74ALS169BN and SN74ALS169BN use the 16-pin DIP package with identical pin assignments and signal definitions.

Q: What is the significance of the DM74ALS169BN being obsolete?

A: Obsolete status indicates that onsemi has discontinued production. The SN74ALS169BN, maintained in active production by Texas Instruments, provides a reliable long-term supply alternative.

Q: Are there compliance differences between the two parts?

A: The SN74ALS169BN carries RoHS3 compliance certification, while the DM74ALS169BN does not specify this status. Both maintain REACH Unaffected status.

Q: Can these parts be used interchangeably in new PCB designs?

A: Yes. The identical package footprint, pin configuration, and electrical specifications support direct interchangeability in new designs using through-hole assembly methods.