Request Quote
(Ships tomorrow)
SN74HC245DW Equivalent & Substitute Parts
Part Overview
The SN74HC245DW is a non-inverting transceiver logic IC manufactured by Texas Instruments, featuring 1 element with 8 bits per element and 3-state output capability in a 20-SOIC package. This part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. Alternative parts maintain functional compatibility while offering different availability, packaging options, and product status classifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SN74HC245DW |
| Manufacturer | Texas Instruments |
| Series | 74HC |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the SN74HC245DW is determined by the following critical parameters: logic type (Transceiver, Non-Inverting), number of elements (1), bits per element (8), output type (3-State), output current specifications (7.8mA high and low), supply voltage range (2V ~ 6V), package type (20-SOIC), and mounting type (Surface Mount). Parts are grouped into three categories based on substitution relationship type: Direct Manufacturer Substitutes (identical electrical and mechanical specifications with different packaging), Manufacturer Recommended Equivalents (same base functionality with extended temperature ranges or automotive qualification), and Parametric Equivalents (functionally compatible with identical key electrical parameters but different base product numbers).
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements / Bits | Output Type | Current (mA) | Supply Voltage | Temp Range (°C) | Package | Product Status | MSL |
|---|---|---|---|---|---|---|---|---|---|---|
| SN74HC245DW | Texas Instruments | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Discontinued | 1 |
| SN74HC245DWR | Texas Instruments | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | 1 |
| 74HC245D,653 | Nexperia USA Inc. | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 20-SOIC | Active | 1 |
| 74HC245D-Q100J | Nexperia USA Inc. | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 20-SOIC | Active | 1 |
| MC74HC245ADWG | onsemi | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -55 ~ 125 | 20-SOIC | Active | 3 |
| MC74HC245ADWR2G | onsemi | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -55 ~ 125 | 20-SOIC | Active | 3 |
| MM74HC245AWMX | onsemi | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | 3 |
| MM74HC245AWM | onsemi | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | 3 |
| SN74HC623DW | Texas Instruments | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Active | 1 |
| SN74HC645DW | Texas Instruments | Transceiver, Non-Inverting | 1 / 8 | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 20-SOIC | Last Time Buy | 1 |
Engineering Selection Recommendations
For direct replacement of the discontinued SN74HC245DW, SN74HC245DWR from Texas Instruments is the primary choice, offering identical electrical specifications and active product status with Cut Tape and Digi-Reel packaging options. The Nexperia 74HC245D,653 and 74HC245D-Q100J provide extended operating temperature range (-40°C to 125°C) with active status and are suitable for applications requiring wider temperature performance. The onsemi MC74HC245ADWG and MC74HC245ADWR2G variants extend the lower temperature limit to -55°C and upper limit to 125°C, with the latter offering Tape & Reel packaging; these parts carry MSL-3 classification requiring controlled storage conditions. The onsemi MM74HC245AWMX and MM74HC245AWM maintain the original temperature specification (-40°C to 85°C) with active status and MSL-3 rating. Texas Instruments SN74HC623DW and SN74HC645DW are parametric equivalents with identical electrical performance but different base product numbers; SN74HC645DW is classified as Last Time Buy. All substitute parts maintain ROHS3 compliance and identical supply voltage, output current, and package specifications.
Frequently Asked Questions (FAQ)
Q: Can SN74HC245DWR directly replace SN74HC245DW? A: Yes. SN74HC245DWR is a direct substitute with identical electrical specifications, output current, supply voltage, and package type. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tube) and active product status.
Q: What is the difference between the Nexperia and onsemi variants? A: Nexperia 74HC245D,653 and 74HC245D-Q100J extend the operating temperature range to -40°C ~ 125°C compared to the original -40°C ~ 85°C. The 74HC245D-Q100J includes AEC-Q100 automotive qualification. onsemi variants (MC74HC245ADWG, MC74HC245ADWR2G, MM74HC245AWMX, MM74HC245AWM) offer extended lower temperature performance (-55°C) with MSL-3 moisture sensitivity classification.
Q: Are there packaging differences among the substitutes? A: Yes. SN74HC245DW and SN74HC245DWR are available in Tube and Cut Tape/Digi-Reel formats respectively. Nexperia parts are supplied in Cut Tape & Digi-Reel or Tape & Reel. onsemi MC74HC245ADWG is Tube packaged; MC74HC245ADWR2G is Tape & Reel. MM74HC245AWMX is Tape & Reel; MM74HC245AWM is Tube packaged.
Q: What does MSL-3 mean and does it affect substitution? A: MSL-3 (Moisture Sensitivity Level 3) requires controlled storage conditions with a maximum floor life of 168 hours after bag opening at 30°C and 60% relative humidity. Parts with MSL-1 (Unlimited) have no such restrictions. Selection depends on your storage and handling capabilities.
Q: Can I use SN74HC623DW or SN74HC645DW as substitutes? A: These are parametric equivalents with identical electrical performance and package specifications. SN74HC623DW is active status. SN74HC645DW is Last Time Buy status, making it less suitable for new designs requiring long-term availability.
Q: Which substitute offers the widest operating temperature range? A: The onsemi MC74HC245ADWG and MC74HC245ADWR2G variants operate from -55°C to 125°C, providing the widest temperature envelope compared to the original -40°C to 85°C specification.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts