SN74ACT1284PWG4 Equivalent & Substitute Parts

Part Overview

The SN74ACT1284PWG4 is an IEEE STD 1284 Translation Transceiver IC in a 20-TSSOP surface mount package. This component functions as a bus interface logic device with 7-bit configuration, operating within a 4.5V to 5.5V supply voltage range. The part is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

SN74ACT1284PWG4

Texas InstrumentsIn Stock: 887SN74ACT1284PWG4 Datasheet

Current PartRFQ

SN74ACT1284PWR

Texas InstrumentsIn Stock: 5454SN74ACT1284PWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ACT1284PWG4 is determined by strict alignment of the following critical parameters:

• Logic Type: Must be IEEE STD 1284 Translation Transceiver
• Number of Bits: Must be 7-bit configuration
• Supply Voltage: Must operate within 4.5V ~ 5.5V range
• Package / Case: Must be 20-TSSOP form factor
• Mounting Type: Must be Surface Mount
• Manufacturer: Texas Instruments (same manufacturer ensures design compatibility)

The SN74ACT1284PWR qualifies as a direct substitute because it matches all critical electrical and mechanical parameters. The primary distinction is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the original part's standard packaging, and the substitute maintains Active product status.

Parameter Comparison

Engineering Selection Recommendations

The SN74ACT1284PWR is the qualified substitute for the SN74ACT1284PWG4. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications and physical package dimensions. The substitute part carries Active product status, ensuring continued manufacturer support and availability, whereas the original part is classified as Obsolete. Both parts meet ROHS3 compliance and REACH requirements, supporting modern environmental and regulatory standards. The packaging format difference (Tape & Reel versus standard) does not affect functional compatibility or electrical performance in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT1284PWR be used as a direct replacement for the SN74ACT1284PWG4?

A: Yes. Both parts are functionally equivalent IEEE STD 1284 Translation Transceiver ICs with identical electrical specifications, 7-bit configuration, 20-TSSOP package dimensions, and operating parameters. The substitute maintains the same supply voltage range (4.5V ~ 5.5V) and temperature operating range (0°C ~ 70°C).

Q: What is the difference between the two part numbers?

A: The primary difference is product status and packaging format. The SN74ACT1284PWG4 is obsolete with standard packaging, while the SN74ACT1284PWR is active and supplied in Tape & Reel format. This distinction does not affect electrical performance or circuit compatibility.

Q: Are there any package or pinout differences?

A: No. Both parts use the identical 20-TSSOP package with 0.173" width and 4.40mm dimensions. Pinout and electrical characteristics are identical.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Tape & Reel is a supply and handling format only. Once the component is removed from the reel and soldered into the circuit, there is no functional difference compared to standard packaging.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74ACT1284PWG4 and SN74ACT1284PWR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.