CD74ACT157PWR Equivalent & Substitute Parts

Part Overview

The CD74ACT157PWR is a 4x2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-TSSOP surface mount package. This component is classified as an active product and is widely used in digital signal routing and data selection applications. The availability of equivalent parts from alternative manufacturers ensures supply chain flexibility and continuity for designs utilizing this multiplexer function.

Substiute Parts

CD74ACT157PWR

Texas InstrumentsIn Stock: 913CD74ACT157PWR Datasheet

Current PartRFQ

MC74ACT157DTR2G

onsemiIn Stock: 37744MC74ACT157DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The MC74ACT157DTR2G from onsemi qualifies as a direct substitute for the CD74ACT157PWR based on the following critical parameters:

• Identical multiplexer circuit configuration (4 x 2:1)
• Identical package type and physical dimensions (16-TSSOP)
• Identical output current specifications (24mA / 24mA)
• Identical supply voltage range (4.5V ~ 5.5V)
• Same logic series designation (74ACT)
• Identical RoHS3 compliance status
• Identical MSL rating (1 - Unlimited)

Both parts share the same base product number (74ACT157) and are functionally interchangeable at the circuit level. The substitute maintains all critical electrical and mechanical parameters required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

Both the CD74ACT157PWR and MC74ACT157DTR2G are active products with ROHS3 compliance and identical functional specifications. Selection between these parts should be based on:

• Availability and lead time from your component supplier
• Procurement cost and volume pricing
• Existing qualification status within your organization
• Operating temperature requirements: The CD74ACT157PWR supports -55°C to 125°C, while the MC74ACT157DTR2G supports -40°C to 85°C. Applications requiring extended low-temperature operation below -40°C or high-temperature operation above 85°C must use the Texas Instruments part.

Both parts are suitable for standard commercial and industrial applications within their respective temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT157DTR2G replace CD74ACT157PWR in all applications?

A: Yes, for applications operating within the -40°C to 85°C temperature range. If your design requires operation below -40°C or above 85°C, the CD74ACT157PWR is required due to its extended operating temperature range of -55°C to 125°C.

Q: Are the physical packages identical?

A: Yes. Both parts use the 16-TSSOP package with identical dimensions (0.173" width, 4.40mm). They are pin-compatible and can be used interchangeably on the same PCB layout.

Q: Do both parts meet RoHS requirements?

A: Yes. Both the CD74ACT157PWR and MC74ACT157DTR2G are ROHS3 compliant and have identical MSL ratings of 1 (Unlimited).

Q: What is the functional difference between these parts?

A: There is no functional difference. Both are 4x2:1 multiplexers with identical output current specifications (24mA), supply voltage requirements (4.5V ~ 5.5V), and logic series designation (74ACT).

Q: Which part should I specify for new designs?

A: Either part is acceptable for new designs. Specify based on your supplier's availability, cost, and your application's temperature requirements. Ensure the selected part's operating temperature range encompasses your design's full operating environment.