Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Texas Instruments SN74LVC157AQDRQ1

Name: SN74LVC157AQDRQ1
Brand: Texas Instruments
SKU: SN74LVC157AQDRQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74LVC157AQDRQ1

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: SN74LVC157AQDRQ1.pdf

Description:: IC MULTIPLEXER 4 X 2:1 16SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,166

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SN74LVC157AQDRQ1 from Texas Instruments is an automotive-qualified quadruple 2-line to 1-line data selector/multiplexer operating from 2V to 3.6V, with 5.4ns max propagation delay at 3.3V, 5.5V-tolerant inputs, and active-low output strobe (G). It routes four independent 2:1 data paths in vehicle body control, powertrain sensor interface, and ADAS domain controller signal routing.

For engineers reviewing the SN74LVC157AQDRQ1 datasheet, SN74LVC157AQDRQ1 pinout, SN74LVC157AQDRQ1 application, or SN74LVC157AQDRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), 5.5V input tolerance enabling mixed-voltage translation, low ground bounce (<0.8V), and WQFN/SOIC/TSSOP package options for space-constrained automotive PCBs.

Technical Context

The SN74LVC157AQDRQ1 implements positive-logic 2:1 multiplexing per channel with a shared active-low strobe (G) that forces all outputs low when high. Its four independent channels each accept true (non-inverted) data from two sources (A/B), selected by the common A/B address line.

It operates within 2V–3.6V V_CC, supports 5.5V-tolerant inputs regardless of supply voltage, and delivers rail-to-rail CMOS-compatible outputs. The device meets AEC-Q100 Grade 1 requirements and exceeds 2000V HBM ESD protection, making it suitable for harsh automotive environments where voltage transients and thermal cycling are routine.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2V to 3.6V - Enables direct integration into 3.3V automotive domains without level-shifting.
Input Voltage Tolerance	Up to 5.5V - Allows interfacing with legacy 5V microcontrollers or sensors without external translators.
Max Propagation Delay	5.4ns at 3.3V - Supports high-speed digital signal routing in real-time control loops (e.g., motor phase selection).
Operating Temperature	–40°C to +125°C - Qualified per AEC-Q100 Grade 1 for under-hood and cabin ECUs.
ESD Rating	±2000V HBM - Meets automotive system-level ESD robustness requirements per ISO 10605.
Output Drive	±24mA at 3V - Sufficient to drive multiple CMOS loads or short PCB traces without buffering.
Power Dissipation Cap	16pF typical C_pd at 3.3V - Low dynamic power enables use in always-on modules with strict quiescent current budgets.

Pinout & Package

SN74LVC157AQDRQ1 is available in SOIC (D), TSSOP (PW), and WQFN (BQB) packages. The SOIC-16 variant (e.g., SN74LVC157ADRQ1) measures 9.90 mm × 6.00 mm with 1.27 mm pitch; the WQFN-16 (e.g., SN74LVC157AWBQBRQ1) is 3.5 mm × 2.5 mm with 0.5 mm pitch and exposed thermal pad.

Pin/Terminal	Circuit Role	Design Meaning
A/B	Address select input	Single control line selecting between Input A or Input B across all four channels simultaneously.
G	Active-low output strobe	Global enable: drives all Y outputs low when high; enables multiplexed output when low.
1A–4A, 1B–4B	Data inputs	Eight independent 3.3V/5V-tolerant inputs - four A-side and four B-side signals per channel.
1Y–4Y	Data outputs	Four CMOS-compatible outputs, each sourcing/sinking ±24mA at 3V, with <0.8V ground bounce.
V_CC	Positive supply	Single 2V–3.6V rail powering all logic; requires local 0.1μF bypass capacitor.
GND	Ground reference	Common return path for logic and output currents; thermal pad in WQFN must be soldered to PCB ground plane.

Key Features

Feature	Design Value
AEC-Q100 qualified	Grade 1 (–40°C to +125°C) - Validated for engine control, transmission, and ADAS applications.
5.5V-tolerant inputs	Operates with 5V logic driving 3.3V domain - eliminates discrete level shifters in mixed-voltage systems.
Low propagation delay	5.4ns max at 3.3V - Enables sub-200MHz data switching for time-critical sensor arbitration.
Output ground bounce control	Typical V_OLP < 0.8V at V_CC = 3.3V - Reduces noise coupling into adjacent analog or RF circuits.
Thermal pad support	WQFN package includes exposed pad - improves thermal resistance (R_θJA = 98.8°C/W) for sustained operation in sealed enclosures.

Applications

Body Control Module (BCM)	Engine Control Unit (ECU)
Use Scenario: Routing sensor data from dual redundant temperature or pressure sensors to a single ADC input. IC Role / Device Role / Timing Role: Quad 2:1 multiplexer selecting between primary and backup sensor signals under MCU command via A/B and G pins. Use Value: Enables hardware-level redundancy without increasing MCU GPIO count or adding PCB routing complexity.	Use Scenario: Selecting between crankshaft position sensor signals from two different mounting locations during cold-start calibration. IC Role / Device Role / Timing Role: High-speed data selector synchronizing with engine timing pulses to feed validated position data to the main controller. Use Value: 5.4ns t_pd ensures minimal latency in real-time ignition timing decisions.
ADAS Domain Controller	Infotainment Head Unit
Use Scenario: Arbitrating camera or radar data streams from multiple sensors before feeding into image processing pipeline. IC Role / Device Role / Timing Role: Signal router managing time-multiplexed inputs from front/rear/side sensors using strobe-controlled output gating. Use Value: Active-low G pin allows synchronized blanking of all outputs during sensor handoff, preventing metastability.	Use Scenario: Switching between audio source signals (Bluetooth, USB, tuner) routed to a single DAC input. IC Role / Device Role / Timing Role: Low-noise multiplexer handling analog-friendly digital audio control paths with minimal crosstalk. Use Value: <0.8V ground bounce and 16pF C_pd reduce digital switching noise coupled into sensitive audio stages.

Body Control Module (BCM)

Engine Control Unit (ECU)

Use Scenario: Routing sensor data from dual redundant temperature or pressure sensors to a single ADC input.

IC Role / Device Role / Timing Role: Quad 2:1 multiplexer selecting between primary and backup sensor signals under MCU command via A/B and G pins.

Use Value: Enables hardware-level redundancy without increasing MCU GPIO count or adding PCB routing complexity.

Use Scenario: Selecting between crankshaft position sensor signals from two different mounting locations during cold-start calibration.

IC Role / Device Role / Timing Role: High-speed data selector synchronizing with engine timing pulses to feed validated position data to the main controller.

Use Value: 5.4ns t_pd ensures minimal latency in real-time ignition timing decisions.

ADAS Domain Controller

Infotainment Head Unit

Use Scenario: Arbitrating camera or radar data streams from multiple sensors before feeding into image processing pipeline.

IC Role / Device Role / Timing Role: Signal router managing time-multiplexed inputs from front/rear/side sensors using strobe-controlled output gating.

Use Value: Active-low G pin allows synchronized blanking of all outputs during sensor handoff, preventing metastability.

Use Scenario: Switching between audio source signals (Bluetooth, USB, tuner) routed to a single DAC input.

IC Role / Device Role / Timing Role: Low-noise multiplexer handling analog-friendly digital audio control paths with minimal crosstalk.

Use Value: <0.8V ground bounce and 16pF C_pd reduce digital switching noise coupled into sensitive audio stages.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC157A	Non-automotive catalog version; same electrical specs but not AEC-Q100 qualified.	Not approved for safety-critical automotive functions; limited to infotainment or non-ECU applications.	Select SN74LVC157A only for cost-sensitive non-automotive designs where qualification is unnecessary.
MC74LCX157DTG	Pin-compatible but rated for –40°C to +85°C only; lower ESD rating (1500V HBM); no AEC-Q100 documentation.	Suitable for industrial or consumer use, but lacks automotive reliability validation and thermal margin.	Use MC74LCX157DTG only if operating ambient stays below 85°C and ESD environment is controlled.

Compared with SN74LVC157A and MC74LCX157DTG, SN74LVC157AQDRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 5.5V input tolerance, and 5.4ns propagation delay - making it the only option certified for under-hood real-time control where thermal resilience and signal integrity are mandatory.

Availability

SN74LVC157AQDRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, powertrain control units, and ADAS sensor fusion systems requiring stable component supply across extended product lifecycles.

Supply support for SN74LVC157AQDRQ1 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and automotive ICs with over 50 years of automotive qualification experience.

The SN74LVC157A-Q1 belongs to TI's automotive logic portfolio, designed specifically for signal routing in AEC-Q100-compliant electronic control units where voltage translation, low latency, and environmental robustness are critical.

FAQ

What is the maximum supply voltage for SN74LVC157AQDRQ1?

The absolute maximum V_CC rating for SN74LVC157AQDRQ1 is 6.5V, but the recommended operating range is strictly 2V to 3.6V per the datasheet. Operating outside this range may compromise AEC-Q100 qualification compliance, timing behavior, and long-term reliability. Always maintain V_CC within 2V–3.6V for full specification guarantee in automotive applications.

Does SN74LVC157AQDRQ1 support 5V logic inputs?

Yes, SN74LVC157AQDRQ1 accepts input voltages up to 5.5V regardless of V_CC level - a key feature enabling seamless interfacing with 5V microcontrollers or sensors in 3.3V automotive domains. This eliminates external level shifters and reduces BOM count while maintaining signal integrity and timing accuracy.

What is the function of the G pin on SN74LVC157AQDRQ1?

The G pin on SN74LVC157AQDRQ1 is an active-low output strobe. When G is high, all four Y outputs are forced low regardless of A/B or data inputs. When G is low, the multiplexer operates normally, routing selected inputs to outputs. This enables global output disable for bus arbitration or power sequencing in multi-device systems.

Which package variants are available for SN74LVC157AQDRQ1?

SN74LVC157AQDRQ1 is offered in three qualified packages: SOIC-16 (D), TSSOP-16 (PW), and WQFN-16 (BQB). The WQFN variant features a 3.5mm × 2.5mm footprint and exposed thermal pad for improved heat dissipation - ideal for space-constrained, thermally demanding automotive modules.

Is SN74LVC157AQDRQ1 compatible with standard SN74LVC157A footprints?

No - SN74LVC157AQDRQ1 itself is not a package designation; it is a family identifier. Specific orderables like SN74LVC157ADRQ1 (SOIC) and SN74LVC157AQPWRQ1 (TSSOP) share identical pinouts with their non-Q1 counterparts (e.g., SN74LVC157ADR and SN74LVC157APWR), but the WQFN variant (SN74LVC157AWBQBRQ1) has a different layout and requires unique PCB land pattern per TI's SLUA271 guidelines.

SN74LVC157AQDRQ1 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Multiplexer

Circuit:: 4 x 2:1

Independent Circuits:: 1

Current - Output High, Low:: 24mA, 24mA

Voltage Supply Source:: Single Supply

Voltage - Supply:: 2V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

SN74LVC157AQDRQ1 FAQ

1.How can I place an order for SN74LVC157AQDRQ1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC157AQDRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SN74LVC157AQDRQ1 reliable?

The price and inventory of SN74LVC157AQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC157AQDRQ1 is usually 5 days.

3.What payment methods are accepted for SN74LVC157AQDRQ1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC157AQDRQ1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVC157AQDRQ1?

SN74LVC157AQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC157AQDRQ1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SN74LVC157AQDRQ1?

For technical support, including SN74LVC157AQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC157AQDRQ1 requirements.

6.How does Aetrix verify that SN74LVC157AQDRQ1 is sourced from the original manufacturer or authorized distributors?

All SN74LVC157AQDRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LVC157AQDRQ1 meets industry standards.

7.What is the process for return or replacement of SN74LVC157AQDRQ1?

All SN74LVC157AQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC157AQDRQ1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SN74LVC157AQDRQ1 part is unused and in its original packaging.

Return procedure for SN74LVC157AQDRQ1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…