SN74ALS169BD Equivalent & Substitute Parts

Part Overview

The SN74ALS169BD is a 4-bit binary counter IC manufactured by Texas Instruments, designed for synchronous up/down counting applications. This component operates at a maximum count rate of 40 MHz with a supply voltage range of 4.5 V to 5.5 V and is housed in a 16-SOIC surface mount package. The SN74ALS169BD is currently in Last Time Buy status, making identification of equivalent substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

SN74ALS169BD

Texas InstrumentsIn Stock: 1189SN74ALS169BD Datasheet

Current PartRFQ

SN74ALS169BDR

Texas InstrumentsIn Stock: 862SN74ALS169BDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS169BD is determined by strict equivalence across the following critical parameters:

• Logic Type: Binary Counter (4-bit, 1 element)
• Direction: Up/Down counting capability
• Timing Architecture: Synchronous operation
• Count Rate: 40 MHz maximum
• Trigger Type: Positive edge triggered
• Voltage Supply Range: 4.5 V ~ 5.5 V
• Package Configuration: 16-SOIC surface mount
• Electrical Characteristics: Identical pin configuration and functional behavior

The SN74ALS169BDR qualifies as a direct substitute based on complete alignment with these parameters. The primary distinction is packaging format: the original part is supplied in Tube packaging, while the substitute is supplied in Tape & Reel (TR) format. Both parts share identical electrical specifications, pinout, and functional characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS169BDR is the direct functional equivalent of the SN74ALS169BD. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications, pinout configuration, and operational characteristics. The SN74ALS169BDR is currently in Active product status, whereas the original SN74ALS169BD is designated Last Time Buy, making the substitute the preferred selection for new designs and ongoing procurement.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and commercial applications. The substitution involves no functional compromise; the difference is limited to packaging format (Tube versus Tape & Reel), which affects handling and assembly processes but not component performance.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS169BDR be used as a direct replacement for the SN74ALS169BD?

A: Yes. The SN74ALS169BDR is electrically and functionally identical to the SN74ALS169BD. Both parts share the same pinout, electrical specifications, count rate, supply voltage range, and operating temperature range. The only difference is the packaging format.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-quantity applications. Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, optimized for automated assembly processes and high-volume production. Both formats contain the same component with identical specifications.

Q: Why is the original part marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer will discontinue production of this specific part number. The SN74ALS169BDR, which is in Active status, is the recommended alternative for future procurement and new designs.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SN74ALS169BD and SN74ALS169BDR maintain identical RoHS3 compliance, REACH unaffected status, and Moisture Sensitivity Level (MSL) ratings.

Q: Can I use the SN74ALS169BDR in existing designs without modification?

A: Yes. The SN74ALS169BDR is a pin-for-pin and functionally equivalent substitute. No circuit modifications or design changes are required.