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Nexperia USA Inc. 74HC157PW,112
- Part No.:
- 74HC157PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC157PW,112.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,174
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Product details
Overview
74HC157PW,112 from Nexperia is a quad 2-input CMOS multiplexer in TSSOP16 package, operating from 2.0 V to 6.0 V supply, with active-low enable (E), common select (S), and non-inverting data path. It routes four independent 2:1 input pairs (1I0/1I1 through 4I0/4I1) to corresponding outputs (1Y–4Y), used in digital logic routing, bus selection, and address/data path control in industrial microcontroller interfaces.
For engineers reviewing the 74HC157PW,112 datasheet, 74HC157PW,112 pinout, 74HC157PW,112 application, or 74HC157PW,112 equivalent, this page delivers verified functional behavior, validated timing under 50 pF load, real-world voltage thresholds at -40 °C to +125 °C, and precise pin-level circuit roles for PCB layout and signal integrity analysis.
Technical Context
The 74HC157PW,112 implements four independent 2:1 multiplexers sharing one global select (S) and one active-low enable (E). Its CMOS architecture ensures rail-to-rail output swing, low static current (≤160 μA at VCC = 6.0 V), and TTL-compatible input thresholds only in the 74HCT variant - this part is 74HC, so inputs require CMOS-level logic (VIH ≥ 3.15 V at VCC = 4.5 V).
Propagation delay is load- and voltage-dependent: tpd = 10 ns (typ) to 38 ns (max) from data/select to output at VCC = 4.5 V and CL = 50 pF; enable-to-output delay is slightly slower (14–35 ns). Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system integration including 3.3 V and 5 V logic domains. |
| Operating Temperature | -40 °C to +125 °C - qualified for extended industrial environments without derating below 125 °C. |
| Propagation Delay (nI0/nI1 → nY) | 13 ns (typ), 38 ns (max) at VCC = 4.5 V, CL = 50 pF - determines maximum clock/data rate in synchronous routing paths. |
| Input Threshold (VIH) | 3.15 V (min) at VCC = 4.5 V - ensures reliable high-level recognition from 3.3 V CMOS drivers without level-shifting. |
| Output Drive Strength | ±4.0 mA at VOH/VOL - sufficient to drive standard 50 pF loads and fan-out to ≥10 74HC inputs. |
| Power Dissipation Capacitance | 70 pF - enables accurate dynamic power calculation: PD = CPD × VCC² × fi × N. |
| ESD Rating (HBM) | >2000 V - meets IEC 61000-4-2 Level 2 for board-level handling robustness. |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S (Select) | Common control for all four muxes: LOW selects source 0 (nI0), HIGH selects source 1 (nI1). |
| 2 | 1I0 | Data input 0 for channel 1 - routed to 1Y when S = LOW and E = LOW. |
| 3 | 1I1 | Data input 1 for channel 1 - routed to 1Y when S = HIGH and E = LOW. |
| 4 | 1Y | Non-inverting output of channel 1 - reflects selected input with no polarity inversion. |
| 5 | 2I0 | Data input 0 for channel 2 - same function as 1I0 but for second mux section. |
| 6 | 2I1 | Data input 1 for channel 2 - same function as 1I1 but for second mux section. |
| 7 | 2Y | Non-inverting output of channel 2 - independent of other outputs, no crosstalk. |
| 8 | GND | Ground reference for all internal logic and I/O - must be low-impedance connection. |
| 9 | 3Y | Non-inverting output of channel 3 - shares S/E control but electrically isolated. |
| 10 | 3I1 | Data input 1 for channel 3 - pin order follows standard logic symbol orientation. |
| 11 | 3I0 | Data input 0 for channel 3 - matches functional grouping in datasheet Fig. 2. |
| 12 | 4Y | Non-inverting output of channel 4 - final output in pin sequence. |
| 13 | 4I1 | Data input 1 for channel 4 - completes the quad set. |
| 14 | 4I0 | Data input 0 for channel 4 - last data input pin before enable. |
| 15 | E | Active-LOW enable - HIGH forces all outputs (1Y–4Y) LOW regardless of S or inputs. |
| 16 | VCC | Positive supply - decoupling capacitor (100 nF) required within 10 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Quad 2:1 Multiplexing with Shared Control | Single S and E pins manage four independent channels - reduces PCB routing complexity vs discrete mux ICs. |
| CMOS-Level Input Compatibility | VIH ≥ 3.15 V at VCC = 4.5 V - interoperable with 3.3 V microcontrollers and FPGAs without translation. |
| Input Clamp Diodes | Enables safe interface to signals up to VCC + 0.5 V using series resistors - eliminates need for external protection diodes. |
| High Noise Immunity | Typical noise margin >1.3 V at VCC = 4.5 V - resists EMI-induced glitches in noisy industrial enclosures. |
| Latch-Up Immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events. |
Applications
| Industrial PLC I/O Expansion | Microcontroller Peripheral Multiplexing |
|---|---|
Use Scenario: Routing analog sensor inputs or digital status lines from multiple field devices into a single ADC or GPIO bank on a PLC CPU module. IC Role / Device Role / Timing Role: Quad 2:1 selector enabling time-shared sampling of eight sensors via four ADC channels, synchronized to MCU clock edges. Use Value: Reduces component count by replacing four discrete 74HC153s; maintains <38 ns propagation delay to preserve timing margins in 1 MHz sampling loops. | Use Scenario: Sharing limited UART, SPI, or I²C pins between multiple peripherals (e.g., display, EEPROM, sensor) on an embedded ARM Cortex-M0+ design. IC Role / Device Role / Timing Role: Bus selector that isolates inactive peripherals, preventing signal contention and pull-up conflicts on shared lines. Use Value: Enables full-duplex operation without software-controlled GPIO direction toggling; E pin allows hardware-gated disable during reset sequences. |
| Digital Test Equipment Signal Routing | Legacy System Interface Bridging |
Use Scenario: Switching calibration reference voltages or test stimulus signals into DUT inputs inside automated test fixtures. IC Role / Device Role / Timing Role: Precision signal path selector with guaranteed monotonic transitions and no glitch generation during S/E changes. Use Value: Eliminates relay-based switching; 70 pF CPD enables stable 10 MHz pattern rates with minimal dynamic power (<1.5 mW at 5 V, 1 MHz). | Use Scenario: Adapting 5 V TTL legacy parallel bus (e.g., ISA-style) to modern 3.3 V FPGA I/O banks requiring level translation and signal conditioning. IC Role / Device Role / Timing Role: Voltage-tolerant multiplexer accepting 5 V inputs (via clamp diodes + resistor) while driving 3.3 V–compatible outputs. Use Value: Avoids dedicated level shifters; VIH = 3.15 V ensures reliable recognition of 5 V logic highs without external biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT157PW,112 | TTL-compatible inputs (VIH = 2.0 V min at VCC = 4.5 V); otherwise identical pinout, timing, and function. | Better suited for direct interfacing with 5 V TTL outputs (e.g., 74LS series) without pull-ups. | Select when driving from legacy 5 V TTL sources; avoid if system uses only CMOS logic to prevent unnecessary input threshold mismatch. |
| SN74LV157APWR | TI part with LV logic family: 2.0–5.5 V range, lower ICC (1 μA typ), but higher VOL (0.55 V max at 4 mA) and no clamp diodes. | Lower static power ideal for battery-powered systems; lacks input overvoltage tolerance. | Prefer for ultra-low-power portable designs where input voltage stays within VCC; avoid in industrial settings with potential overvoltage transients. |
Compared with 74HCT157PW,112, the 74HC157PW,112 offers tighter VIH matching for 3.3 V CMOS sources, while SN74LV157APWR trades clamp diodes and noise margin for sub-microamp quiescent current - making each optimal for distinct voltage-domain and reliability priorities.
Availability
74HC157PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral multiplexing, digital test equipment signal routing, and legacy system interface bridging requiring stable component supply across extended temperature ranges.
Supply support for 74HC157PW,112 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
Nexperia is a leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with core expertise in automotive-grade and industrial reliability.
The 74HC157PW,112 belongs to Nexperia's 74HC logic family - designed for robust, low-power, wide-supply digital signal routing in harsh industrial and automation environments.
FAQ
What is the maximum clock frequency supported by the 74HC157PW,112?
The 74HC157PW,112 does not operate on a clock; it is combinational logic. Its usable data rate depends on propagation delay and load: with CL = 50 pF and VCC = 4.5 V, tpd ≤ 38 ns supports clean signal routing up to ~13 MHz toggle rate. For reliable operation, maintain setup/hold times relative to controlling signals (S, E) per the function table.
Can the 74HC157PW,112 accept 5 V inputs while powered from 3.3 V?
Yes - its input clamp diodes allow safe interface to voltages up to VCC + 0.5 V. With VCC = 3.3 V, inputs up to 3.8 V are safe. For true 5 V inputs, use a series current-limiting resistor (e.g., 1 kΩ) to keep IIK ≤ ±20 mA, as specified in limiting values. Do not exceed VI < −0.5 V or VI > VCC + 0.5 V without external protection.
Is the 74HC157PW,112 pin-compatible with the 74HC158 or 74HC153?
No - the 74HC157PW,112 is not pin-compatible with 74HC158 (inverting quad 2:1 mux) or 74HC153 (dual 4:1 mux). Pin assignments differ fundamentally: 74HC157 has shared S/E and four 2:1 sections, whereas 74HC153 has two independent 4:1 sections with separate select lines. Physical pinout (SOT403-1) is identical, but logic mapping and terminal functions are incompatible.
Does the TSSOP16 package (SOT403-1) require thermal pad soldering?
No - the 74HC157PW,112 in SOT403-1 has no thermal pad. Unlike QFN packages, TSSOP16 relies on lead-frame conduction. The datasheet specifies no exposed thermal pad; thermal performance is characterized with standard JEDEC PCB mounting (2-layer, 2 oz Cu, 1 in² copper area per side). No special solder stencil or thermal vias are required for nominal operation up to +125 °C.
74HC157PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HC157PW,112 FAQ
1.How can I place an order for 74HC157PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC157PW,112 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 74HC157PW,112 reliable?
The price and inventory of 74HC157PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC157PW,112 is usually 5 days.
3.What payment methods are accepted for 74HC157PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC157PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC157PW,112?
74HC157PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC157PW,112 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 74HC157PW,112?
For technical support, including 74HC157PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC157PW,112 requirements.
6.How does Aetrix verify that 74HC157PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HC157PW,112 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 74HC157PW,112 meets industry standards.
7.What is the process for return or replacement of 74HC157PW,112?
All 74HC157PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC157PW,112, 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 74HC157PW,112 part is unused and in its original packaging.
Return procedure for 74HC157PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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