Texas Instruments SN74LVC157ANSRE4

Overview

SN74LVC157ANSRE4 from Texas Instruments is a quadruple 2-line to 1-line data selector/multiplexer IC operating from 1.65V to 3.6V, supporting –40°C to 125°C temperature range, with 5.2ns max propagation delay at 3.3V, 5.5V-tolerant inputs, and 16-pin SOP package. It routes four independent 2-input data channels under common address (A/B) and strobe (G) control in digital logic systems.

For engineers reviewing the SN74LVC157ANSRE4 datasheet, SN74LVC157ANSRE4 pinout, SN74LVC157ANSRE4 application, or SN74LVC157ANSRE4 equivalent, key selection criteria include its 3.3V-compatible operation with 5V input tolerance, low-power CMOS design, guaranteed timing across industrial/automotive temperature grades, and SOP-16 footprint compatibility with legacy LVC logic families.

Technical Context

The SN74LVC157ANSRE4 implements four independent 2:1 multiplexers sharing one address select (A/B) and one active-low output enable (G). When G is high, all outputs (1Y–4Y) are forced low; when G is low, each Y output reflects the selected A or B input per channel. Inputs tolerate up to 5.5V regardless of VCC, enabling level translation between 3.3V and 5V domains.

Its switching behavior is characterized by tpd ≤ 5.2ns at 3.3V, with output ground bounce (VOLP) < 0.8V and VOH undershoot (VOHV) > 2V at 3.3V/25°C. The device meets JESD 17 latch-up immunity (>250mA) and JESD 22 ESD ratings (2000V HBM, 1000V CDM), ensuring robustness in mixed-voltage board-level environments.

Key Specifications

Pinout & Package

SN74LVC157ANSRE4 uses a 16-pin SOP (NS) package measuring 5mm × 6.4mm (body: 5mm × 4.4mm), RoHS-compliant with NIPDAU lead finish and MSL Level-1 reflow profile.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2:1 multiplexer applications.

Compared with SN74LVC157ADR and 74LVC1G157GW, the SN74LVC157ANSRE4 delivers optimal balance of channel density, thermal performance (64°C/W RθJA), and compact SOP-16 footprint-making it ideal for high-channel-count, thermally sensitive industrial and automotive control modules.

Availability

SN74LVC157ANSRE4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and FPGA configuration interfaces requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for SN74LVC157ANSRE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of expertise in high-reliability interface and signal-path ICs.

The SN74LVC157A product line was designed for voltage-flexible digital signal routing in mixed-voltage systems, emphasizing interoperability between 3.3V and 5V logic families while delivering predictable timing and robust ESD/latch-up performance.

FAQ

What is the maximum input voltage rating for SN74LVC157ANSRE4?

The SN74LVC157ANSRE4 supports input voltages up to 5.5V regardless of VCC level, enabling direct connection to 5V logic sources without level-shifting circuitry. This specification is validated across the full operating temperature range (–40°C to 125°C) and applies to all input pins (1A–4B, A/B, G), making SN74LVC157ANSRE4 suitable for bridging legacy 5V subsystems with modern 3.3V controllers.

Does SN74LVC157ANSRE4 require external pull-up or pull-down resistors on unused inputs?

Yes - all unused inputs of SN74LVC157ANSRE4 must be actively tied to VCC or GND to prevent floating states that cause increased ICC, unpredictable outputs, or excessive power consumption. TI's application report SCBA004 explicitly mandates this practice; leaving inputs unconnected violates recommended operating conditions and may result in metastability or oscillation in adjacent channels.

What is the thermal resistance (RθJA) of SN74LVC157ANSRE4 in its NS package?

The SN74LVC157ANSRE4 in the SOP (NS) package has a junction-to-ambient thermal resistance (RθJA) of 64°C/W, as specified in TI's SCAS292S datasheet Section 4.5. This value assumes standard JEDEC 2-layer test board conditions and confirms suitability for operation up to 125°C ambient when power dissipation remains below 500mW, with linear derating applied above 60°C.

Can SN74LVC157ANSRE4 be used as a level translator between 5V and 3.3V logic domains?

Yes - SN74LVC157ANSRE4 functions as a bidirectional level translator: its 5.5V-tolerant inputs accept 5V signals while operating from a 3.3V supply, and its CMOS outputs swing rail-to-rail (0V to 3.3V), providing clean 3.3V-compatible outputs. No external components are needed, and timing parameters (e.g., 5.2ns tpd) remain valid under these mixed-voltage conditions.

What is the meaning of the "E4" suffix in SN74LVC157ANSRE4?

"E4" denotes Texas Instruments' green packaging standard: lead-free (RoHS-compliant), NiPdAu (NIPDAU) lead finish, and adherence to TI's enhanced environmental specifications. It does not indicate a functional revision - SN74LVC157ANSRE4 shares identical logic behavior, timing, and electrical characteristics with non-E4 variants like SN74LVC157ANSR, differing only in material composition and marking.