SN74ABT2245DBR Equivalent & Substitute Parts

Part Overview

The SN74ABT2245DBR is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments. It functions as a 1-element, 8-bit per element transceiver with 3-state output capability, designed for signal buffering and bus interface applications in digital systems. The device operates within the 4.5V to 5.5V supply voltage range and maintains active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance and functional characteristics can be maintained across different packaging formats while preserving core transceiver functionality.

Substiute Parts

SN74ABT2245DBR

Texas InstrumentsIn Stock: 6923SN74ABT2245DBR Datasheet

Current PartRFQ

74ABT245PW,118

Nexperia USA Inc.In Stock: 225674ABT245PW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ABT2245DBR is determined by the following critical parameters:

• Logic Type: Must be Transceiver, Non-Inverting
• Number of Elements: Must be 1
• Number of Bits per Element: Must be 8
• Output Type: Must be 3-State
• Output Current Specifications: Must match 32mA (High) and 64mA (Low)
• Supply Voltage Range: Must be 4.5V ~ 5.5V
• Operating Temperature Range: Must be -40°C ~ 85°C (TA)
• Series: Must be 74ABT
• Mounting Type: Must be Surface Mount
• Product Status: Must be Active
• Compliance: Must maintain RoHS3 compliance

The substitute part 74ABT245PW,118 meets all electrical and functional requirements. Packaging differences (20-SSOP versus 20-TSSOP) represent the primary distinction, with both packages accommodating surface mount assembly on standard PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

Both the SN74ABT2245DBR and 74ABT245PW,118 maintain active product status with full RoHS3 compliance and REACH unaffected designation. Selection between these parts is determined by PCB layout constraints and package footprint requirements. The SN74ABT2245DBR utilizes a 20-SSOP package with 5.30mm width, while the 74ABT245PW,118 employs a 20-TSSOP package with 4.40mm width. The narrower TSSOP package may be advantageous in space-constrained applications. Both devices satisfy identical electrical specifications, supply voltage requirements, and operating temperature ranges, ensuring functional interchangeability within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the 74ABT245PW,118 directly replace the SN74ABT2245DBR?

A: Yes, provided PCB layout accommodates the 20-TSSOP package footprint. All electrical parameters, output current specifications, supply voltage range, and operating temperature range are identical. The primary difference is package geometry.

Q: What is the significance of the package designation change from SSOP to TSSOP?

A: SSOP denotes Shrink Small Outline Package, while TSSOP denotes Thin Shrink Small Outline Package. The TSSOP variant offers reduced package width (4.40mm versus 5.30mm), enabling higher density PCB layouts. Pin pitch and electrical connectivity remain equivalent.

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

A: No. Both parts maintain identical RoHS3 compliance status, MSL rating of 1 (Unlimited), and REACH unaffected designation. ECCN and HTSUS classifications are equivalent.

Q: What parameters must remain constant for substitution eligibility?

A: The 74ABT series designation, non-inverting transceiver logic type, 1-element 8-bit configuration, 3-state output type, 32mA/64mA output current specifications, 4.5V to 5.5V supply voltage range, and -40°C to 85°C operating temperature range must all be maintained.

Q: Can substitutes from different manufacturers be used interchangeably?

A: Yes, provided all electrical specifications, functional characteristics, and compliance certifications match the original part. The SN74ABT2245DBR (Texas Instruments) and 74ABT245PW,118 (Nexperia USA Inc.) demonstrate this cross-manufacturer compatibility.