SN74HC245PW Equivalent & Substitute Parts

Part Overview

The SN74HC245PW is a non-inverting bus transceiver logic integrated circuit manufactured by Texas Instruments, housed in a 20-TSSOP surface mount package. This component functions as a 1-element, 8-bit per element transceiver with 3-state output capability, operating across a 2V to 6V supply voltage range. The SN74HC245PW is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SN74HC245PW

Texas InstrumentsIn Stock: 2303SN74HC245PW Datasheet

Current PartRFQ

SN74HC245PWR

Texas InstrumentsIn Stock: 2446SN74HC245PWR Datasheet

DirectRFQ

MC74HC245ADTR2G

onsemiIn Stock: 2291MC74HC245ADTR2G Datasheet

DirectRFQ

74HC245PW,112

Nexperia USA Inc.In Stock: 186074HC245PW,112 Datasheet

MFR RecommendedRFQ

74HC245PW,118

Nexperia USA Inc.In Stock: 1396674HC245PW,118 Datasheet

MFR RecommendedRFQ

74HC245PW-Q100J

Nexperia USA Inc.In Stock: 252874HC245PW-Q100J Datasheet

MFR RecommendedRFQ

MC74HC245ADTG

onsemiIn Stock: 58917MC74HC245ADTG Datasheet

MFR RecommendedRFQ

MM74HC245AMTCX

Fairchild SemiconductorIn Stock: 9140MM74HC245AMTCX Datasheet

MFR RecommendedRFQ

MM74HC245AMTC

Fairchild SemiconductorIn Stock: 2402MM74HC245AMTC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC245PW is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Base product number: 74HC245
• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Bits per element: 8
• Output type: 3-State
• Output current: 7.8mA (high and low)
• Supply voltage range: 2V ~ 6V
• Package type: 20-TSSOP surface mount
• RoHS3 compliance

Operating Temperature Consideration: The SN74HC245PW specifies -40°C ~ 85°C operation. Substitute parts with extended temperature ranges (-40°C ~ 125°C or -55°C ~ 125°C) remain functionally equivalent within the original part's temperature envelope and provide additional operational margin.

Packaging Format Variations: Substitute parts are available in multiple packaging formats (Tube, Cut Tape & Digi-Reel, Tape & Reel) representing different distribution and handling methods. These packaging variations do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Active Status: SN74HC245PWR (Texas Instruments) and 74HC245PW,118 (Nexperia USA Inc.) are the preferred substitutes, both maintaining active product status with identical electrical specifications to the original SN74HC245PW. SN74HC245PWR is available in Cut Tape & Digi-Reel format, while 74HC245PW,118 offers the same format with extended temperature range capability.

Extended Temperature Applications: MC74HC245ADTR2G and MC74HC245ADTG (onsemi) provide -55°C ~ 125°C operating range, suitable for applications requiring broader thermal envelope coverage. These parts maintain all electrical parameters and RoHS3 compliance.

Automotive Grade Option: 74HC245PW-Q100J (Nexperia USA Inc.) includes AEC-Q100 automotive qualification and Tape & Reel packaging, appropriate for automotive and high-reliability applications requiring formal qualification documentation.

Avoid Obsolete Parts: 74HC245PW,112 (Nexperia USA Inc.) carries obsolete product status and should not be selected for new designs or long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74HC245PWR directly replace SN74HC245PW in existing designs? A: Yes. SN74HC245PWR is electrically and mechanically identical to SN74HC245PW, differing only in packaging format (Cut Tape & Digi-Reel versus Tube). Both operate at -40°C ~ 85°C with 2V ~ 6V supply voltage and 7.8mA output current specifications.

Q: What is the difference between 74HC245PW,118 and 74HC245PW,112? A: Both are Nexperia products with identical electrical specifications. 74HC245PW,118 is active and available in Cut Tape & Digi-Reel format. 74HC245PW,112 is obsolete and should not be used for new applications.

Q: Are onsemi MC74HC245ADTR2G and MC74HC245ADTG interchangeable? A: Yes, both are onsemi products with identical electrical specifications. MC74HC245ADTR2G is packaged in Tape & Reel format, while MC74HC245ADTG is in Tube format. Both support -55°C ~ 125°C operating temperature.

Q: Does the extended temperature range of MC74HC245ADTG affect compatibility? A: No. The -55°C ~ 125°C range of MC74HC245ADTG encompasses the original SN74HC245PW specification of -40°C ~ 85°C. Extended temperature capability does not compromise compatibility within the original operating envelope.

Q: What does the "Q100J" designation in 74HC245PW-Q100J indicate? A: The Q100J designation indicates AEC-Q100 automotive qualification. This part is suitable for automotive applications requiring formal qualification documentation and is available in Tape & Reel packaging.

Q: Are Fairchild MM74HC245AMTC and MM74HC245AMTCX equivalent? A: Yes. Both Fairchild parts are electrically identical with -40°C ~ 85°C operating range and 7.8mA output current. They differ only in packaging designation but maintain the same 20-TSSOP footprint and surface mount compatibility.

Q: Can I use these substitutes in high-temperature applications above 85°C? A: Only onsemi (MC74HC245ADTR2G, MC74HC245ADTG) and Nexperia (74HC245PW,118, 74HC245PW-Q100J) parts rated to -55°C ~ 125°C or -40°C ~ 125°C are suitable for operation above 85°C. Fairchild and original Texas Instruments parts are limited to 85°C maximum.