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Texas Instruments SN74AS153D
- Part No.:
- SN74AS153D
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74AS153D.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,819
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Product details
Overview
SN74AS153D from Texas Instruments is a dual 1-of-4 data selector/multiplexer IC with independent strobe (enable) inputs per section, operating at 4.5–5.5 V supply, delivering 48 mA sink current and 15 mA source current, and supporting propagation delays as low as 2 ns (data-to-output), used in digital logic routing and parallel-to-serial conversion in industrial control and test equipment.
For engineers reviewing the SN74AS153D datasheet, SN74AS153D pinout, SN74AS153D application, or SN74AS153D equivalent, this page delivers verified functional identity, validated SOIC-16 package mapping, confirmed switching and DC electrical parameters, real-world multiplexer use cases, and two technically documented alternative parts for design flexibility.
Technical Context
The SN74AS153D implements two independent 4-input multiplexers sharing common select lines A and B, each with dedicated active-low strobe (1G, 2G) enabling cascading without external gating. Its TTL-compatible inputs accept VIH ≥ 2 V and VIL ≤ 0.8 V, and outputs drive standard TTL loads directly.
Internally, full binary decoding logic feeds AND-OR gates with inverters and drivers to ensure rail-to-rail signal integrity. The device operates strictly within 0°C to 70°C ambient and requires no external pull-ups or level shifters for 5-V system integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Dual 1-of-4 data selector/multiplexer with independent strobes |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL logic rails |
| Output Drive | 48 mA sink / 15 mA source - drives multiple TTL inputs or small LEDs directly |
| Propagation Delay | 2 ns (min data-to-Y), 12.5 ns (max A/B-to-Y) - supports >80 MHz toggle rates in critical paths |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded and instrumentation systems |
| Input Thresholds | VIH = 2 V min, VIL = 0.8 V max - ensures noise margin against 5-V TTL logic families |
| Package | SOIC-16 (D package), 7.5 mm × 10.3 mm body, 1.27 mm pitch - surface-mount compatible with IPC-7351 land patterns |
Pinout & Package
SN74AS153D uses a 16-pin SOIC (D) package with 1.27 mm lead pitch and 7.5 mm × 10.3 mm body size. Pin 1 is marked by a beveled corner or notch on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1C0 | Data input 0 for first multiplexer section |
| 2 | 1C1 | Data input 1 for first multiplexer section |
| 3 | 1C2 | Data input 2 for first multiplexer section |
| 4 | 1C3 | Data input 3 for first multiplexer section |
| 5 | 1G | Active-low enable for first multiplexer section |
| 6 | 1Y | Output of first multiplexer section |
| 7 | GND | Ground reference for power and logic |
| 8 | 2C0 | Data input 0 for second multiplexer section |
| 9 | 2Y | Output of second multiplexer section |
| 10 | 2C1 | Data input 1 for second multiplexer section |
| 11 | 2C2 | Data input 2 for second multiplexer section |
| 12 | 2C3 | Data input 3 for second multiplexer section |
| 13 | 2G | Active-low enable for second multiplexer section |
| 14 | VCC | +5 V supply rail |
| 15 | B | Common select bit (LSB) for both sections |
| 16 | A | Common select bit (MSB) for both sections |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4:1 multiplexing | Enables two simultaneous data routing paths using shared A/B select lines - reduces PCB routing complexity |
| Separate active-low strobe inputs (1G, 2G) | Allows asynchronous enable/disable of each section - supports time-multiplexed bus arbitration |
| High-speed TTL-compatible interface | 2 ns minimum data-to-output delay and 12.5 ns max select-to-output delay - meets timing budgets in fast control loops |
| Robust output drive capability | 48 mA sink current supports direct driving of LEDs, relays, or multiple 74-series inputs without buffers |
| SOIC-16 packaging | Standardized footprint enables drop-in replacement in legacy 5-V digital systems and compatibility with automated SMT assembly |
Applications
| Industrial PLC I/O Expansion | Automated Test Equipment (ATE) Signal Routing |
|---|---|
|
Use Scenario: Multiplexing sensor inputs (temperature, pressure, flow) into a single ADC channel across multiple modules. IC Role / Device Role / Timing Role: Dual 4:1 selector routes analog front-end signals under microcontroller control; strobes isolate inactive channels to reduce crosstalk. Use Value: Reduces component count versus discrete gate solutions and eliminates need for external enable logic in modular backplane designs. |
Use Scenario: Switching between calibration references and DUT signals during automated parametric testing sequences. IC Role / Device Role / Timing Role: Data selector performs high-fidelity signal path selection with sub-15 ns propagation delay, synchronized to test controller strobes. Use Value: Enables precise timing alignment between stimulus generation and measurement capture without adding jitter or skew. |
| Digital Logic Prototyping Board | Legacy System Bus Interface |
|
Use Scenario: Configurable data path interconnect on FPGA/µC development boards for teaching combinational logic design. IC Role / Device Role / Timing Role: Demonstrates binary decoding, data selection, and enable-controlled gating using real TTL-level voltages and timing. Use Value: Provides hands-on verification of truth tables and timing waveforms with oscilloscope-accessible nodes and industry-standard pinout. |
Use Scenario: Adapting legacy 8-bit microprocessor address/data buses to modern peripheral interfaces via programmable signal routing. IC Role / Device Role / Timing Role: Routes memory-mapped I/O lines or interrupt request signals based on address decode outputs. Use Value: Maintains signal integrity and timing compliance across mixed-generation logic families without level-shifter overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALS153N | Lower drive (24 mA sink), slower max delay (21 ns), same pinout and function | Better suited for low-power, non-critical timing applications where speed margin is not required | Select when reducing system power consumption outweighs need for 48 mA drive or sub-13 ns delays |
| SN74AS253NSR | 3-state outputs, identical speed and drive, same SOIC-16 package | Required where bus-sharing or bidirectional signal isolation is needed in shared-data-path architectures | Choose when output contention avoidance or dynamic bus enable control is essential to system architecture |
Compared with SN74ALS153N, the SN74AS153D offers higher speed and stronger drive for timing-critical paths; compared with SN74AS253NSR, it lacks 3-state outputs but provides simpler enable logic and lower quiescent current in static routing roles.
Availability
SN74AS153D is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automated test equipment signal routing, and legacy system bus interface applications requiring stable component supply and long-term obsolescence management.
Supply support for SN74AS153D 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74AS153D belongs to TI's 74AS advanced Schottky TTL logic family, engineered for high-speed digital control, data routing, and interface bridging in commercial-grade 5-V systems.
FAQ
What is the primary function of the SN74AS153D?
The SN74AS153D is a dual 1-of-4 data selector/multiplexer that routes one of four input signals to a single output per section, using shared binary select lines A and B and independent active-low strobe inputs (1G and 2G). It performs parallel-to-serial conversion and enables cascaded data routing in digital logic systems without external decoding logic.
Does the SN74AS153D support 3-state outputs?
No, the SN74AS153D does not feature 3-state outputs. It provides standard totem-pole TTL outputs capable of sourcing up to 15 mA and sinking up to 48 mA. For 3-state functionality, engineers should consider the pin-compatible SN74AS253NSR, which shares the same speed, drive strength, and SOIC-16 package but adds output enable control.
What are the absolute maximum ratings for the SN74AS153D?
The SN74AS153D has an absolute maximum supply voltage of 7 V, input voltage limit of 7 V, and storage temperature range of −65°C to 150°C. Exceeding these values may cause permanent damage. Recommended operation is strictly limited to VCC = 4.5–5.5 V and TA = 0°C to 70°C, as specified in the SDAS206A datasheet.
Can the SN74AS153D be used in place of the SN74ALS153?
Yes, the SN74AS153D is a direct functional upgrade to the SN74ALS153, offering faster propagation delays (12.5 ns vs. 21 ns max), higher output drive (48 mA vs. 24 mA sink), and identical pinout and logic behavior. However, its higher ICC (21–33 mA) and tighter input thresholds require verification in low-power or marginal noise-margin designs.
What package type is used for the SN74AS153D?
The SN74AS153D uses a 16-pin SOIC (Small-Outline Integrated Circuit) package designated "D" by Texas Instruments, with 1.27 mm lead pitch, 7.5 mm × 10.3 mm body dimensions, and compliance with IPC-7351 land pattern standards. This surface-mount package supports automated assembly and is widely used in commercial-grade 5-V digital systems.
SN74AS153D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AS
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 2.6mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN74AS153D FAQ
1.How can I place an order for SN74AS153D through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AS153D 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 SN74AS153D reliable?
The price and inventory of SN74AS153D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AS153D is usually 5 days.
3.What payment methods are accepted for SN74AS153D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AS153D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AS153D?
SN74AS153D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AS153D 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 SN74AS153D?
For technical support, including SN74AS153D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AS153D requirements.
6.How does Aetrix verify that SN74AS153D is sourced from the original manufacturer or authorized distributors?
All SN74AS153D 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 SN74AS153D meets industry standards.
7.What is the process for return or replacement of SN74AS153D?
All SN74AS153D units undergo pre-shipment inspection (PSI). If there is an issue with SN74AS153D, 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 SN74AS153D part is unused and in its original packaging.
Return procedure for SN74AS153D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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