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Texas Instruments SN74AS153DR
- Part No.:
- SN74AS153DR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74AS153DR.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
SN74AS153DR from Texas Instruments is a dual 1-of-4 data selector/multiplexer IC used for binary-decoded signal routing in digital logic systems. It features two independent 4-input multiplexers with common select lines (A, B), separate strobe inputs (1G, 2G), and TTL-compatible 5 V operation. Key confirmed parameters include tPLH/tPHL propagation delays as low as 2 ns (data-to-output), IOL = 48 mA sink capability, and operation over 0°C to 70°C - enabling use in industrial control bus arbitration and parallel-to-serial conversion circuits.
For engineers reviewing the SN74AS153DR datasheet, SN74AS153DR pinout, SN74AS153DR application, or SN74AS153DR equivalent, key selection considerations include its 16-pin SOIC (D) package, dual-mux architecture with independent enables, high-speed AS-series switching performance, and compatibility with standard 5 V TTL logic families in legacy and retrofit digital designs.
Technical Context
The SN74AS153DR implements two independent 4:1 multiplexers sharing select inputs A and B, each with dedicated active-low strobe (G) control enabling cascading or independent section gating. Its internal structure includes inverters and drivers feeding AND-OR logic gates to perform full binary decoding of input data lines (C0–C3 per section).
Designed for 5 V TTL systems, it delivers AS-series speed: typical propagation delays of 2–3 ns for data-to-output transitions and 3–10 ns for select/strobe-to-output, with guaranteed maximums up to 12.5 ns under loaded conditions (CL = 50 pF, RL = 500 Ω). Output drive strength supports 48 mA sink and 15 mA source current at VOH/VOL limits.
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 power rails |
| Propagation Delay (max) | 12.5 ns (data-to-Y) - enables ≤80 MHz multiplexed data throughput in synchronous systems |
| Output Drive (IOL) | 48 mA - drives multiple TTL inputs or small LED loads without buffering |
| Operating Temperature | 0°C to 70°C - suitable for commercial and industrial ambient environments |
| Input Logic Levels | VIH = 2 V, VIL = 0.8 V - ensures robust noise margin against TTL-level signals |
| Package | 16-pin SOIC (D) - surface-mount footprint with 1.27 mm pitch, RoHS-compliant NIPDAU finish |
Pinout & Package
SN74AS153DR is housed in a 16-pin SOIC (D) package with 1.27 mm lead pitch and 2.00 mm max height, compliant with JEDEC MS-012 and TI's NS0016A outline. Pin 1 is located at the top-left corner with beveled edge marking.
| 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 (strobe) for first section |
| 6 | 1Y | Output for first multiplexer section |
| 7 | GND | Ground reference for power and logic |
| 8 | 2C0 | Data input 0 for second multiplexer section |
| 9 | 2C1 | Data input 1 for second multiplexer section |
| 10 | 2C2 | Data input 2 for second multiplexer section |
| 11 | 2C3 | Data input 3 for second multiplexer section |
| 12 | 2G | Active-low enable (strobe) for second section |
| 13 | 2Y | Output for second multiplexer section |
| 14 | A | Common select line A (LSB) for both sections |
| 15 | B | Common select line B (MSB) for both sections |
| 16 | VCC | +5 V supply input |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4:1 mux sections | Enables simultaneous routing of two separate 4-channel data streams using shared address lines |
| Separate active-low strobes (1G, 2G) | Allows independent gating or cascading of sections without external logic |
| AS-series speed grade | Sub-10 ns typical propagation delay supports high-throughput digital control and test equipment |
| TTL-compatible input/output levels | Direct interface with 74LS, 74ALS, and other 5 V logic families without level-shifting |
| High output sink current (48 mA) | Drives multiple gate inputs or indicator LEDs directly, reducing component count |
Applications
| Bus Arbitration Logic | Parallel-to-Serial Conversion |
|---|---|
Use Scenario: Selecting among four peripheral data lines onto a shared system bus in microcontroller-based instrumentation. IC Role / Device Role / Timing Role: Dual-mux acts as bidirectional bus switch controller, using A/B selects to route one of four inputs per channel to outputs 1Y/2Y under strobe control. Use Value: Eliminates need for discrete logic gates or larger CPLDs in space-constrained embedded controllers requiring deterministic signal routing. | Use Scenario: Converting 4-bit parallel status words from sensor arrays into serial bitstreams for UART transmission. IC Role / Device Role / Timing Role: Configured with clock-driven A/B sequencing and strobed output enable to serialize nibbles on successive cycles. Use Value: Achieves reliable 4-bit serialization at >10 MHz rates using only one IC and minimal timing logic - no firmware overhead required. |
| Test Equipment Signal Routing | Digital Logic Trainer Boards |
Use Scenario: Switching calibration reference signals between multiple DUT inputs in automated test fixtures. IC Role / Device Role / Timing Role: Functions as a precision analog/digital multiplexer controller where strobe inputs synchronize routing with test sequence triggers. Use Value: Provides glitch-free, low-propagation-delay signal selection critical for sub-20 ns timing margins in high-speed validation setups. | Use Scenario: Demonstrating combinational logic principles in university electronics labs using breadboard-mounted 5 V systems. IC Role / Device Role / Timing Role: Serves as a pedagogical 4:1 mux with visible pin access, enabling hands-on verification of truth tables and enable behavior. Use Value: Robust TTL drive and clear pin labeling support repeatable student experiments without signal integrity issues or level mismatch errors. |
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 |
|---|---|---|---|
| SN74ALS153DR | Slower propagation delay (max 21 ns vs. 12.5 ns); lower IOL (24 mA vs. 48 mA); same pinout and function | Suitable for cost-sensitive, lower-speed designs where AS-series speed is unnecessary | Select SN74ALS153DR when timing budget allows ≥20 ns delays and drive load is ≤24 mA. |
| 74F153N | Same 16-pin PDIP package; F-series speed (tPD ≈ 9 ns); higher ICC (33 mA typical); not available in SOIC | Preferred for through-hole prototyping or legacy board replacements requiring identical footprint | Choose 74F153N for through-hole builds or where F-series logic family consistency is required across a design. |
Compared with SN74ALS153DR and 74F153N, the SN74AS153DR offers the fastest propagation and highest sink drive in SOIC packaging - making it optimal for space-constrained, high-speed digital control where thermal and layout efficiency matter.
Availability
SN74AS153DR is available at Aetrix Electronics and suitable for industrial control bus arbitration, test equipment signal routing, and digital logic trainer boards requiring stable component supply and long-term manufacturability.
Supply support for SN74AS153DR 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 solutions with decades of legacy logic product support.
The SN74AS153DR belongs to TI's 74AS advanced Schottky TTL logic family, engineered for high-speed digital control, instrumentation, and industrial systems requiring fast, robust 5 V signal routing.
FAQ
What is the maximum operating frequency supported by the SN74AS153DR?
The SN74AS153DR does not specify a maximum clock frequency in its datasheet, but its guaranteed maximum propagation delay of 12.5 ns (data-to-output) implies reliable operation up to approximately 80 MHz in well-terminated, low-capacitance configurations. Actual usable frequency depends on system-level factors including load capacitance, PCB trace length, and input signal rise time - all of which must be validated per application. The SN74AS153DR is optimized for deterministic routing rather than continuous clocked operation.
Can the SN74AS153DR operate with a 3.3 V supply?
No, the SN74AS153DR is specified only for 4.5 V to 5.5 V operation and is not 3.3 V tolerant. Applying 3.3 V violates the recommended operating conditions and results in undefined logic thresholds, degraded noise margins, and potential failure to meet VIH (2 V min) and VOL (0.5 V max) specifications. For 3.3 V systems, consider TI's 74LVC153 or similar CMOS alternatives - the SN74AS153DR requires strict 5 V TTL compliance.
Does the SN74AS153DR have 3-state outputs?
No, the SN74AS153DR has standard totem-pole TTL outputs, not 3-state. Its outputs actively drive high or low based on select and strobe inputs; there is no high-impedance (Hi-Z) output mode. For 3-state functionality in a dual 4:1 mux, refer to TI's SN74AS253A or SN74ALS253 - the SN74AS153DR provides only enabled/disabled (via G inputs) and data-selected output states.
What is the pin 1 marking method for the SN74AS153DR SOIC package?
The SN74AS153DR uses standard SOIC polarity marking: pin 1 is identified by a beveled edge or notch on the top surface of the package, located at the end opposite the embossed TI logo. On tape-and-reel delivery, pin 1 aligns with quadrant Q1 per TI's tape orientation specification - verified via carrier tape sprocket hole indexing. This matches JEDEC MO-153 and TI's NS0016A outline.
How does the strobe (G) input function on the SN74AS153DR?
Each strobe input (1G and 2G) is active-low and independently controls its respective multiplexer section: when G is high, the corresponding Y output is forced low regardless of select or data inputs; when G is low, the Y output reflects the selected C0–C3 input per A/B state. This enables section-by-section enable/disable, cascading (e.g., using one section's Y to drive another's C input), or synchronized gating - a core feature confirmed in the SN74AS153DR function table and logic diagram.
SN74AS153DR 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
SN74AS153DR FAQ
1.How can I place an order for SN74AS153DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AS153DR 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 SN74AS153DR reliable?
The price and inventory of SN74AS153DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AS153DR is usually 5 days.
3.What payment methods are accepted for SN74AS153DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AS153DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AS153DR?
SN74AS153DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AS153DR 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 SN74AS153DR?
For technical support, including SN74AS153DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AS153DR requirements.
6.How does Aetrix verify that SN74AS153DR is sourced from the original manufacturer or authorized distributors?
All SN74AS153DR 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 SN74AS153DR meets industry standards.
7.What is the process for return or replacement of SN74AS153DR?
All SN74AS153DR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AS153DR, 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 SN74AS153DR part is unused and in its original packaging.
Return procedure for SN74AS153DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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