SN74LS245DBRG4 Equivalent & Substitute Parts

Part Overview

The SN74LS245DBRG4 is a non-inverting transceiver IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 4.75V to 5.25V supply voltage range and is housed in a 20-SSOP surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

SN74LS245DBRG4

Texas InstrumentsIn Stock: 706SN74LS245DBRG4 Datasheet

Current PartRFQ

SN74LS245DBR

Texas InstrumentsIn Stock: 4884SN74LS245DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS245DBRG4 is based on the following critical parameters that must remain constant:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 15mA, 24mA
• Voltage - Supply: 4.75V ~ 5.25V
• Operating Temperature: 0°C ~ 70°C (TA)
• Package / Case: 20-SSOP (0.209", 5.30mm Width)
• Base Product Number: 74LS245

The SN74LS245DBR is identified as the manufacturer-recommended substitute. Both parts share identical electrical specifications, functional characteristics, and physical packaging. The primary distinction is product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS245DBR is the direct substitute for the SN74LS245DBRG4. Both components are ROHS3 compliant and carry identical electrical and mechanical specifications. The SN74LS245DBR maintains active product status with higher inventory availability (4799 Pcs), whereas the original part is discontinued. Selection of the SN74LS245DBR eliminates supply chain risk while maintaining full functional and physical compatibility. Both parts carry REACH Unaffected status and EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS245DBR be used as a direct replacement for the SN74LS245DBRG4?

A: Yes. Both parts are identical in electrical specifications, logic function, output characteristics, supply voltage range, operating temperature, and 20-SSOP package dimensions. The substitute is the manufacturer-recommended alternative.

Q: What is the difference between SN74LS245DBRG4 and SN74LS245DBR?

A: The parts are functionally and electrically identical. The primary difference is product status: SN74LS245DBRG4 is discontinued, while SN74LS245DBR is active with higher inventory availability. Packaging format may differ (Digi-Reel vs. standard packaging).

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, MSL Level 1 (Unlimited), REACH Unaffected status, and EAR99 ECCN classification.

Q: Is the 20-SSOP package identical between both parts?

A: Yes. Both parts use the 20-SSOP package with 0.209" width and 5.30mm dimensions, ensuring identical PCB footprint and mounting compatibility.

Q: What are the output current specifications?

A: Both parts deliver 15mA output high current and 24mA output low current, maintaining identical drive capability for bus applications.