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SN74LVC157ADRE4 Equivalent & Substitute Parts
Part Overview
The SN74LVC157ADRE4 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in 16-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The device operates across a 2V to 3.6V supply range with output currents of 24mA for both high and low states, suitable for low-voltage digital logic applications requiring signal multiplexing functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Type | Multiplexer 4 x 2:1 |
| Circuit Configuration | 4 x 2:1 |
| Output Current (High/Low) | 24mA / 24mA |
| Supply Voltage Range | 2V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C |
| Package Type | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the SN74LVC157ADRE4 is determined by strict equivalence across the following parameters: multiplexer circuit configuration (4 x 2:1), output current capability (24mA), supply voltage range (minimum 2V to 3.6V), operating temperature range (minimum -40°C to 85°C), and 16-SOIC package compatibility. Substitute parts are grouped into two categories:
Parametric Equivalents maintain identical electrical specifications and package form factor, differing only in manufacturer, product status, or packaging format (tape & reel versus bulk).
Manufacturer Recommended Equivalents are functionally equivalent parts from alternative manufacturers that meet or exceed the core electrical requirements while maintaining package compatibility.
Parameter Comparison
| Part Number | Manufacturer | Circuit | Output Current (mA) | Supply Voltage | Temp Range (°C) | Package | Product Status |
|---|---|---|---|---|---|---|---|
| SN74LVC157ADRE4 | Texas Instruments | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Discontinued |
| SN74LVC157ADR | Texas Instruments | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
| SN74LVC157ADRG3 | Texas Instruments | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
| SN74LVC157ADT | Texas Instruments | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
| 74LCX157M | Fairchild Semiconductor | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
| 74LVC157AD,118 | NXP Semiconductors | 4 x 2:1 | 24 / 24 | 1.2V ~ 3.6V | -40 ~ 125 | 16-SOIC | Active |
| 74LCX157MX | Fairchild Semiconductor | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
| 74LCX257MX | Fairchild Semiconductor | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
| MC74LCX157DR2G | onsemi | 4 x 2:1 | 24 / 24 | 2V ~ 3.6V | -40 ~ 85 | 16-SOIC | Active |
Engineering Selection Recommendations
For direct replacement of the discontinued SN74LVC157ADRE4, the Texas Instruments SN74LVC157ADR, SN74LVC157ADRG3, and SN74LVC157ADT are the primary choices, all maintaining identical electrical specifications and active product status with ROHS3 compliance.
The NXP Semiconductors 74LVC157AD,118 offers extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (1.2V), providing enhanced performance margins for temperature-sensitive applications while maintaining full parametric compatibility.
Fairchild Semiconductor 74LCX157M, 74LCX157MX, and 74LCX257MX, along with onsemi MC74LCX157DR2G, are functionally equivalent alternatives with active product status and ROHS3 compliance. All substitute parts maintain the 16-SOIC package form factor and identical output current specifications.
Frequently Asked Questions (FAQ)
Q: Can SN74LVC157ADR directly replace SN74LVC157ADRE4? A: Yes. Both parts share identical electrical specifications (4 x 2:1 multiplexer, 24mA output current, 2V to 3.6V supply, -40°C to 85°C operating range) and 16-SOIC packaging. The primary difference is product status: SN74LVC157ADR is active while SN74LVC157ADRE4 is discontinued.
Q: What is the difference between SN74LVC157ADR and SN74LVC157ADRG3? A: Both are Texas Instruments parametric equivalents with identical electrical and package specifications. The suffix variation indicates different manufacturing date codes or quality grades. Both are active products suitable for new designs.
Q: Why does 74LVC157AD,118 from NXP have different voltage and temperature specifications? A: The NXP part extends the minimum supply voltage to 1.2V and maximum operating temperature to 125°C, providing broader operational margins. It remains functionally equivalent for applications within the original SN74LVC157ADRE4 specifications (2V to 3.6V, -40°C to 85°C).
Q: Are Fairchild 74LCX157 series parts compatible with the original design? A: Yes. The 74LCX157M and 74LCX157MX maintain identical multiplexer configuration, output current, supply voltage range, and operating temperature. The LCX designation indicates a different logic family variant with equivalent performance characteristics.
Q: What packaging formats are available for substitutes? A: Substitute parts are available in tape & reel (TR) and bulk packaging formats. All maintain the 16-SOIC surface mount package form factor required for PCB compatibility with the original SN74LVC157ADRE4 design.
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