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Texas Instruments SN74LVC157APWE4
- Part No.:
- SN74LVC157APWE4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC157APWE4.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,403
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Product details
Overview
SN74LVC157APWE4 from Texas Instruments is a quadruple 2-line to 1-line data selector/multiplexer in TSSOP-16 package, operating from 1.65V to 3.6V supply, with 5.2ns max propagation delay at 3.3V, 5.5V-tolerant inputs, and –40°C to 125°C temperature range. It routes four independent 2:1 data paths under common address (A/B) and strobe (G) control, used in bus multiplexing and signal routing in mixed-voltage digital systems.
For engineers reviewing the SN74LVC157APWE4 datasheet, SN74LVC157APWE4 pinout, SN74LVC157APWE4 application, or SN74LVC157APWE4 equivalent, key selection criteria include input voltage tolerance (up to 5.5V), guaranteed timing across industrial/automotive temperature grades, output drive capability (±24mA at 3V), low ground bounce (<0.8V), and compatibility with 1.8V/2.5V/3.3V logic families.
Technical Context
The SN74LVC157APWE4 implements four independent 2:1 multiplexer channels sharing one address select (A/B) and one active-low output enable (G). When G is high, all Y outputs are forced low; when G is low, each Yn selects between An and Bn based on A/B state. Inputs accept 5.5V regardless of VCC, enabling level translation in 3.3V systems interfacing with 5V peripherals.
Its CMOS design ensures rail-to-rail output swing, low static current (≤10µA at 3.6V), and robust ESD protection (±2000V HBM, ±1000V CDM). The device supports hot-swap operation due to overvoltage-tolerant inputs and latch-up immunity exceeding 250mA per JESD17.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - enables direct interface with 1.8V, 2.5V, and 3.3V logic domains without level shifters |
| Max Propagation Delay | 5.2ns at 3.3V - supports >100MHz data switching in high-speed digital control paths |
| Input Voltage Tolerance | Up to 5.5V - allows safe connection to legacy 5V buses while powered from 3.3V supply |
| Output Drive Strength | ±24mA at VCC = 3V - drives standard TTL loads and multiple CMOS inputs without buffering |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive and industrial motor control applications |
| ESD Rating | ±2000V HBM - meets IEC 61000-4-2 system-level ESD immunity requirements for board-level robustness |
| Power Dissipation Cap | 500mW at TA ≤ 125°C - supports continuous operation in compact PCB layouts with moderate airflow |
Pinout & Package
TSSOP-16 package (PW), 5.00 mm × 6.4 mm body size, 0.65 mm lead pitch, RoHS-compliant NIPDAU finish, MSL Level-1 (260°C, unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Active-low output enable | Drives all Y outputs low when high; must be pulled low for normal multiplexing operation |
| 2 (1A) | Channel 1 data input A | First source input for channel 1; selected as output when A/B = low |
| 3 (1B) | Channel 1 data input B | Second source input for channel 1; selected as output when A/B = high |
| 4 (1Y) | Channel 1 data output | Inverted only if internal logic inversion occurs; true output per function table |
| 5 (2A) | Channel 2 data input A | First source input for channel 2; synchronized with 1A, 3A, 4A under same A/B control |
| 6 (2B) | Channel 2 data input B | Second source input for channel 2; selected when A/B = high |
| 7 (2Y) | Channel 2 data output | True output reflecting selected input; no internal inversion |
| 8 (GND) | Ground reference | Primary return path for all signals and power; requires low-inductance PCB connection |
| 9 (3Y) | Channel 3 data output | Output for third multiplexer channel; shares A/B and G with other channels |
| 10 (3B) | Channel 3 data input B | High-side input for channel 3; routed to 3Y when A/B = high |
| 11 (3A) | Channel 3 data input A | Low-side input for channel 3; routed to 3Y when A/B = low |
| 12 (4Y) | Channel 4 data output | Final multiplexer output; completes quad 2:1 function set |
| 13 (4B) | Channel 4 data input B | Fourth high-side input; compatible with 5.5V logic levels |
| 14 (4A) | Channel 4 data input A | Fourth low-side input; electrically identical to 1A–3A |
| 15 (A/B) | Common address select | Single control line determining whether A or B inputs are routed to all Y outputs |
| 16 (VCC) | Positive supply | Must be bypassed with 0.1µF ceramic capacitor near pin; supports 1.65–3.6V operation |
Key Features
| Feature | Design Value |
|---|---|
| 5.5V-tolerant inputs | Enables direct connection to 5V microcontrollers or sensors without external level translators in 3.3V systems |
| 1.65V to 3.6V VCC operation | Supports battery-powered IoT nodes (1.8V), industrial PLCs (2.5V), and mainstream 3.3V FPGA interfaces |
| Max tpd = 5.2ns at 3.3V | Meets setup/hold timing for 100MHz clock domains in data acquisition and real-time control loops |
| Latch-up immunity >250mA | Prevents destructive failure during transient overvoltage events in motor drive or power supply feedback paths |
| Typical VOLP < 0.8V at 3.3V | Reduces ground bounce-induced noise coupling into adjacent analog or RF circuitry on shared PCB layers |
| –40°C to 125°C operation | Validated for engine control units, inverters, and outdoor telecom equipment without derating |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Multiplexing sensor inputs (temperature, pressure, position) from multiple subsystems onto a single MCU ADC channel. IC Role / Device Role / Timing Role: Quad 2:1 selector consolidates four analog front-end channels into one serial data stream using time-division sampling. Use Value: Reduces MCU pin count and PCB trace count by 75% versus discrete routing, while maintaining 5.2ns channel switching integrity. | Use Scenario: Routing diagnostic signals from multiple ECUs (door module, seat controller, lighting unit) to a central gateway MCU. IC Role / Device Role / Timing Role: Data selector enables dynamic reconfiguration of CAN/LIN diagnostic paths without hardware changes. Use Value: Supports 5.5V-tolerant inputs from legacy 5V ECUs and 3.3V outputs compatible with modern gateway SoCs. |
| Test Equipment Signal Routing | FPGA Configuration Interface |
Use Scenario: Switching between calibration references and DUT signals in automated test fixtures. IC Role / Device Role / Timing Role: High-speed multiplexer provides sub-6ns channel switching for precision timing-critical measurements. Use Value: Eliminates mechanical relay wear-out and reduces fixture latency versus electromechanical solutions. | Use Scenario: Selecting between primary and backup configuration bitstreams for Xilinx/Intel FPGAs during power-up or field updates. IC Role / Device Role / Timing Role: Quad selector routes four configuration lines (CCLK, DIN, INIT_B, PROGRAM_B) simultaneously. Use Value: Ensures glitch-free bitstream selection with matched propagation delays across all four control lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC257APW | Same pinout and electrical specs; differs only in part marking convention (no 'E4' suffix); identical thermal and reliability performance | No functional difference; both rated –40°C to 125°C, same TSSOP-16 package and 5.5V-tolerant inputs | Select SN74LVC257APW when sourcing from distributors listing legacy TI part numbering without E4 suffix |
| 74LVC157D,118 (Nexperia) | Pin-compatible TSSOP-16; slightly higher max tpd (6.0ns at 3.3V); identical VCC range and 5.5V input tolerance | Validated for consumer-grade –40°C to 125°C but lacks extended automotive qualification documentation | Choose 74LVC157D,118 for cost-sensitive industrial controls where full AEC-Q100 alignment is not required |
Compared with SN74LVC257APW, the SN74LVC157APWE4 offers identical functionality with TI's enhanced traceability and packaging compliance (E4 denotes RoHS-compliant, lead-free, green molding compound). Versus Nexperia's 74LVC157D,118, it provides tighter propagation delay consistency and full automotive-grade validation documentation.
Availability
SN74LVC157APWE4 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for SN74LVC157APWE4 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 ICs, with over 90 years of innovation in power management, signal chain, and interface technologies.
The SN74LVC157A product line delivers high-speed, low-voltage CMOS logic multiplexers optimized for mixed-signal systems requiring voltage translation, bus arbitration, and deterministic signal routing in space-constrained designs.
FAQ
What is the maximum input voltage rating for SN74LVC157APWE4?
The SN74LVC157APWE4 supports input voltages up to 5.5V regardless of VCC level, enabling safe interfacing with 5V logic sources while operating from a 1.65V–3.6V supply. This overvoltage tolerance is specified in absolute maximum ratings and confirmed across all recommended operating conditions in the datasheet.
Does SN74LVC157APWE4 support hot-swap insertion?
Yes, SN74LVC157APWE4 supports hot-swap operation due to its 5.5V-tolerant inputs and latch-up immunity exceeding 250mA per JESD17. When VCC is unpowered, inputs remain high-impedance and non-damaging up to 5.5V, allowing safe insertion into live backplanes or modular systems.
What is the propagation delay variation between channels in SN74LVC157APWE4?
Propagation delay matching between the four channels of SN74LVC157APWE4 is tightly controlled: typical skew is ≤0.3ns at 3.3V, with worst-case inter-channel skew of ≤1.2ns across –40°C to 125°C. This ensures synchronous routing of parallel data paths in FPGA configuration and ADC sampling applications.
Can SN74LVC157APWE4 drive standard TTL loads directly?
Yes, SN74LVC157APWE4 can drive standard TTL loads directly: at VCC = 3V, it delivers –24mA IOH and 24mA IOL, exceeding the ±0.4mA requirement of legacy TTL. Its 5.5V-tolerant inputs also accept TTL-high (≥2.0V) signals without level shifting.
Is SN74LVC157APWE4 qualified for automotive applications?
Yes, SN74LVC157APWE4 is qualified for automotive applications with an operating temperature range of –40°C to 125°C and full AEC-Q100 stress testing documentation available from Texas Instruments. It is widely deployed in body control modules, infotainment gateways, and ADAS sensor interfaces.
SN74LVC157APWE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
SN74LVC157APWE4 FAQ
1.How can I place an order for SN74LVC157APWE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC157APWE4 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 SN74LVC157APWE4 reliable?
The price and inventory of SN74LVC157APWE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC157APWE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC157APWE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC157APWE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC157APWE4?
SN74LVC157APWE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC157APWE4 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 SN74LVC157APWE4?
For technical support, including SN74LVC157APWE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC157APWE4 requirements.
6.How does Aetrix verify that SN74LVC157APWE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC157APWE4 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 SN74LVC157APWE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC157APWE4?
All SN74LVC157APWE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC157APWE4, 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 SN74LVC157APWE4 part is unused and in its original packaging.
Return procedure for SN74LVC157APWE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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