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Nexperia USA Inc. 74HCT157D,653
- Part No.:
- 74HCT157D,653
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT157D,653.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,238
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Product details
Overview
74HCT157D,653 from Nexperia is a quad 2-input TTL-compatible multiplexer IC used for digital signal routing in data selection and bus management circuits. It features one common select (S) input, active-low enable (E), four independent 2:1 data paths (1I0/1I1 to 1Y, etc.), operates from 4.5 V to 5.5 V, supports -40 °C to +125 °C industrial temperature range, and delivers propagation delays as low as 12 ns (VCC = 4.5 V, CL = 50 pF). It is commonly deployed in microcontroller peripheral interface logic and address/data bus switching.
For engineers reviewing the 74HCT157D,653 datasheet, 74HCT157D,653 pinout, 74HCT157D,653 application, or 74HCT157D,653 equivalent, key selection considerations include TTL-level input compatibility, SO16 package thermal performance, enable-controlled output disable behavior, and guaranteed operation across extended industrial temperature extremes.
Technical Context
The 74HCT157D,653 implements four independent 2:1 multiplexers sharing a single select line (S) and global active-low enable (E). When E is HIGH, all outputs (1Y–4Y) are forced LOW regardless of S or inputs; when E is LOW, each output nY passes nI0 if S = LOW or nI1 if S = HIGH - a non-inverting, combinational data path with no internal latching.
Its TTL-compatible inputs accept 2.0 V minimum VIH and 0.8 V maximum VIL at VCC = 4.5–5.5 V, enabling direct interfacing with legacy 5 V TTL logic families. Output drive capability is ±4 mA at VCC = 4.5 V, with VOL ≤ 0.33 V and VOH ≥ 3.84 V under load, ensuring robust noise margins in mixed-logic systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible CMOS, enables direct connection to 5 V TTL without level shifters |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard 5 V system rails with ±10 % tolerance margin |
| Propagation Delay (tpd) | 12 ns (max, S→nY, VCC = 4.5 V, CL = 50 pF) - supports >30 MHz data switching in synchronous control paths |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive ECUs and industrial motor drives |
| Output Drive | ±4 mA (IOH/IOL) - sufficient to drive multiple 74-series inputs or small capacitive loads (<30 pF) |
| Input Clamp Diodes | Integrated - allows safe interface to voltages exceeding VCC using external current-limiting resistors |
| ESD Rating | HBM >2000 V, CDM >1000 V - exceeds JEDEC JS-001/JS-002 Class 2/C3 for board-level handling robustness |
Pinout & Package
74HCT157D,653 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads, 3.9 mm body width, and gull-wing surface-mount terminals. The package is RoHS-compliant and rated for reflow soldering per JEDEC J-STD-020.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S (Select) | Common control for all four multiplexers: LOW selects I0 inputs, HIGH selects I1 inputs |
| 2, 5, 11, 14 | 1I0, 2I0, 3I0, 4I0 | Data source 0 inputs - routed to corresponding outputs when S = LOW and E = LOW |
| 3, 6, 10, 13 | 1I1, 2I1, 3I1, 4I1 | Data source 1 inputs - routed to corresponding outputs when S = HIGH and E = LOW |
| 4, 7, 9, 12 | 1Y, 2Y, 3Y, 4Y | Independent multiplexer outputs - high-impedance disabled only via E (not S) |
| 8 | GND | Ground reference for all signals and power return path |
| 15 | E (Enable) | Active-LOW global enable: HIGH forces all Y outputs LOW; LOW enables normal multiplexing |
| 16 | VCC | Positive supply rail (4.5–5.5 V); powers internal CMOS circuitry and output buffers |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH(min) = 2.0 V, VIL(max) = 0.8 V at VCC = 4.5–5.5 V - eliminates need for external level translators when interfacing with 5 V TTL |
| Wide temperature operation | Specified from -40 °C to +125 °C - supports deployment in engine control units, power inverters, and outdoor industrial controllers |
| Low dynamic power | CPD = 70 pF - enables predictable dynamic power calculation (PD = CPD × VCC² × fi × N) for thermal budgeting |
| Clamp diode protection | Internal input diodes allow safe overvoltage tolerance up to ±20 mA clamping current - simplifies interface to higher-voltage sensors or legacy buses |
| High noise immunity | CMOS design with hysteresis-free but rail-to-rail noise margins (>1.2 V at VCC = 5 V) - resists coupling in noisy motor-drive or switching-power environments |
Applications
| Microcontroller Peripheral Multiplexing | Industrial Bus Arbitration |
|---|---|
|
Use Scenario: A 32-bit MCU with limited GPIO pins routes analog sensor readings and digital status flags through shared I/O lines. IC Role / Device Role / Timing Role: 74HCT157D,653 acts as a hardware-selectable signal router, allowing one ADC channel or one status register to be connected to a common data bus based on MCU-controlled S and E. Use Value: Reduces required MCU pin count by 4×, avoids software-based bit-banging delays, and ensures deterministic <12 ns path latency between selection and data availability. |
Use Scenario: A programmable logic controller (PLC) backplane uses a shared 8-bit data bus among multiple I/O modules. IC Role / Device Role / Timing Role: Each module integrates a 74HCT157D,653 to gate its local register onto the bus only when selected by master address decode logic driving E and S. Use Value: Enables clean bus isolation during module hot-swap or fault conditions; E-driven forced LOW prevents bus contention even during reset or firmware crash. |
| Legacy System Interface Bridge | Test Equipment Signal Routing |
|
Use Scenario: Retrofitting a modern FPGA into a legacy 5 V TTL-based test fixture requiring compatibility with existing control logic. IC Role / Device Role / Timing Role: 74HCT157D,653 serves as bidirectional signal conditioner, translating FPGA LVCMOS outputs to TTL-compatible levels while preserving timing integrity. Use Value: Eliminates need for discrete resistor networks or dedicated level shifters; maintains sub-15 ns edge alignment critical for setup/hold timing in synchronous test patterns. |
Use Scenario: Automated test equipment (ATE) switches between multiple DUT signal sources (clock, stimulus, feedback) into a single measurement channel. IC Role / Device Role / Timing Role: 74HCT157D,653 provides glitch-free, enable-gated signal selection with precise propagation delay matching across all four channels. Use Value: Ensures repeatable timing correlation between stimulus and response measurements; E pin allows synchronized channel blanking during reconfiguration. |
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 |
|---|---|---|---|
| 74HC157D,653 | CMOS-level inputs (VIH = 3.15 V min @ VCC = 4.5 V); wider 2.0–6.0 V supply range | Better suited for mixed-voltage systems (e.g., 3.3 V control + 5 V peripherals) but requires level translation when driven by TTL | Select when interfacing with 3.3 V MCUs or wide-supply designs; avoid in pure 5 V TTL-only systems without translators |
| SN74LS157N | Bipolar TTL technology; VIH = 2.0 V min, VIL = 0.8 V max, but consumes ~18 mW static power vs. <0.1 mW for HCT | Higher drive strength (8 mA) but slower (25 ns typical), incompatible with 3.3 V logic, and not qualified beyond +70 °C | Choose only for legacy board replacements where LS family loading or timing must be preserved; not recommended for new designs due to power and temp limitations |
Compared with 74HC157D,653 and SN74LS157N, the 74HCT157D,653 uniquely balances TTL input compatibility, ultra-low static power, and extended temperature operation - making it optimal for energy-constrained industrial controllers where legacy interface reliability and thermal resilience are both mandatory.
Availability
74HCT157D,653 is available at Aetrix Electronics and suitable for industrial motor control, automotive engine management, and programmable logic controller (PLC) applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT157D,653 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 headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discrete, and MOSFET solutions with emphasis on reliability, efficiency, and automotive qualification.
The 74HCT157D,653 belongs to Nexperia's 74HCT logic family - engineered specifically for seamless integration between legacy 5 V TTL systems and modern low-power CMOS controllers, with focus on industrial and automotive signal routing applications.
FAQ
Can 74HCT157D,653 operate at 3.3 V supply?
No. The 74HCT157D,653 is specified only for 4.5 V to 5.5 V operation per its Recommended Operating Conditions table. At 3.3 V, input thresholds fall outside guaranteed TTL compatibility (VIH min drops below 2.0 V), and output drive degrades significantly. Use 74HC157D,653 or 74LVC157 for 3.3 V systems.
What happens to outputs when E is HIGH and S toggles?
When E is HIGH, all four outputs (1Y–4Y) are forced LOW regardless of S state or input values. S transitions have no effect on outputs during this condition - the device fully disables its multiplexing function, providing clean bus isolation without glitches.
Is the SO16 package (SOT109-1) lead-free and RoHS compliant?
Yes. The 74HCT157D,653 in SO16 packaging meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations and halogen-free molding compound, as confirmed in Nexperia's official product compliance documentation and material declarations.
How does input clamping diode protection work in practice?
The integrated clamp diodes connect each input to VCC and GND. When an input voltage exceeds VCC by >0.5 V or falls below GND by >0.5 V, the diode conducts, limiting voltage excursion. To prevent damage, a series current-limiting resistor must be used - e.g., a 1 kΩ resistor limits clamp current to <20 mA for a 24 V transient applied to a 5 V system.
74HCT157D,653 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 4mA, 4mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74HCT157D,653 FAQ
1.How can I place an order for 74HCT157D,653 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT157D,653 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 74HCT157D,653 reliable?
The price and inventory of 74HCT157D,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT157D,653 is usually 5 days.
3.What payment methods are accepted for 74HCT157D,653?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT157D,653 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT157D,653?
74HCT157D,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT157D,653 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 74HCT157D,653?
For technical support, including 74HCT157D,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT157D,653 requirements.
6.How does Aetrix verify that 74HCT157D,653 is sourced from the original manufacturer or authorized distributors?
All 74HCT157D,653 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 74HCT157D,653 meets industry standards.
7.What is the process for return or replacement of 74HCT157D,653?
All 74HCT157D,653 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT157D,653, 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 74HCT157D,653 part is unused and in its original packaging.
Return procedure for 74HCT157D,653:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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