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Texas Instruments SN74LS153D
- Part No.:
- SN74LS153D
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LS153D.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:838
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Product details
Overview
SN74LS153D from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer in a 16-pin SOIC package, operating over 0°C to 70°C, with typical propagation delay of 15 ns at VCC = 5 V and IOL = 8 mA, used for digital signal routing in TTL-compatible logic systems.
For engineers reviewing the SN74LS153D datasheet, SN74LS153D pinout, SN74LS153D application, or SN74LS153D equivalent, this page delivers verified functional identity, validated pin assignments, confirmed timing parameters, real-world use cases, and two technically documented alternative parts for legacy TTL system design and repair.
Technical Context
The SN74LS153D implements two independent 4:1 multiplexers sharing common select (S0, S1) and strobe (1G, 2G) inputs, each with complementary outputs (1Y, 1W and 2Y, 2W). It uses bipolar Schottky TTL technology with guaranteed fan-out of 20 LS-TTL loads.
Its logic operates synchronously on active-low enable (G) and binary-select inputs, supporting cascading via output enables and W/Y complementarity. No internal latching or clocking is present - it is purely combinational.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL - ensures compatibility with legacy 74LS series, low power vs standard TTL, and defined noise margins. |
| Propagation Delay (tpd) | 15 ns max (VCC = 5 V, RL = 500 Ω, CL = 15 pF) - determines maximum clock/data rate in synchronous routing paths. |
| Supply Voltage (VCC) | 4.75 V to 5.25 V - requires tightly regulated 5 V rail; not tolerant of wide-range or battery-derived supplies. |
| Output Drive (IOH/IOL) | -0.4 mA / 8 mA - supports direct interfacing to LS-TTL inputs without pull-ups or buffers. |
| Operating Temperature | 0°C to +70°C - commercial-grade rating; unsuitable for extended industrial or automotive ambient conditions. |
| Package Type | SOIC (D) - 3.9 mm body width, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1. |
Pinout & Package
SN74LS153D is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package with 1.27 mm pitch, 3.9 mm body width, and 1.75 mm maximum height. Pin 1 is marked by a beveled corner or notch orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1G, 2G | Active-low enable inputs | Disables respective multiplexer output (Y/W) when high; required for channel selection control. |
| 1A0–1A3, 2A0–2A3 | Data inputs (4 per mux) | Four parallel input lines per multiplexer; routed to Y/W based on S0/S1 state. |
| S0, S1 | Binary select inputs | Shared between both muxes; define which of four inputs passes to output (00→A0, 11→A3). |
| 1Y, 1W, 2Y, 2W | True and complemented outputs | 1Y/2Y are non-inverted outputs; 1W/2W are inverted - enables wired-OR or polarity-flexible logic. |
| VCC, GND | Power and ground | VCC on Pin 16, GND on Pin 8 - standard dual-supply placement for SOIC-16; decoupling essential. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4:1 multiplexers | Enables compact implementation of two parallel data-routing paths in one IC, reducing board space vs discrete solutions. |
| Complementary outputs (Y and W) | Eliminates need for external inverters when both true and inverted signals are required in logic trees or bus drivers. |
| Common select and enable control | Reduces control-line count in systems where both muxes operate in lockstep, simplifying FPGA or microcontroller GPIO usage. |
| LS-TTL compatible voltage thresholds | Guarantees interoperability with legacy 74LS, 74ALS, and 74F families without level-shifting circuitry. |
Applications
| Industrial Control Logic | Test Equipment Signal Routing |
|---|---|
|
Use Scenario: Selecting among four sensor inputs (temperature, pressure, flow, voltage) for digitization in a PLC I/O module. IC Role / Device Role / Timing Role: Data selector routing analog-to-digital converter inputs under microcontroller command. Use Value: Reduces component count versus discrete gate-based selectors and avoids software polling latency. |
Use Scenario: Switching calibration reference signals into a multimeter's front-end amplifier during self-test mode. IC Role / Device Role / Timing Role: Precision analog signal path selector with deterministic propagation delay and low crosstalk. Use Value: Enables repeatable, glitch-free reference switching without requiring additional timing synchronization. |
| Legacy Computer Bus Arbitration | EPROM Address Decoding |
|
Use Scenario: Managing access to shared memory banks across multiple CPU bus masters in an 8-bit embedded system. IC Role / Device Role / Timing Role: Combinational address/data bus selector synchronized to bus grant signals. Use Value: Provides predictable setup/hold timing for bus handoff, avoiding race conditions in multi-master arbitration. |
Use Scenario: Selecting among four EPROM devices (each 32 KB) to construct a 128 KB program memory map. IC Role / Device Role / Timing Role: High-speed address line multiplexer decoding upper address bits (A15–A16) for chip enable. Use Value: Delivers sub-20 ns address switching critical for meeting EPROM access time requirements at 4–6 MHz CPU clocks. |
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 |
|---|---|---|---|
| SN74LS153N | Same logic function and timing, but in 16-pin PDIP package with through-hole mounting and wider temperature range (0°C to 70°C), no RoHS exemption needed. | Preferred for prototyping, manual assembly, or legacy PCBs designed for DIP footprints. | Select SN74LS153N when through-hole assembly or socket-based testing is required; not drop-in compatible with SOIC layout. |
| SN74LS153DR | Identical electrical specs and pinout; differs only in tape-and-reel packaging (2500 pcs/reel) and MSL Level-1 reflow profile. | Optimized for automated SMT production; same board footprint and soldering process as SN74LS153D. | Choose SN74LS153DR for volume SMT manufacturing; SN74LS153D is obsolete but may remain in limited distributor stock. |
Compared with SN74LS153N and SN74LS153DR, the SN74LS153D offers identical logic behavior and timing but lacks current production support and RoHS compliance documentation - making SN74LS153DR the preferred choice for new SMT designs, while SN74LS153N remains viable for through-hole or repair contexts.
Availability
SN74LS153D is available at Aetrix Electronics and suitable for industrial control logic, test equipment signal routing, and legacy computer bus arbitration requiring stable component supply despite its obsolete status.
Supply support for SN74LS153D 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic products with broad industrial and aerospace heritage.
The SN74LS153D belongs to TI's legacy 74LS logic family, engineered for reliable, low-power TTL-compatible digital signal routing in commercial-grade systems from the 1970s onward.
FAQ
Is SN74LS153D still in production?
No - according to TI's official packaging addendum, SN74LS153D is marked "Obsolete" and no longer manufactured. However, Aetrix Electronics maintains traceable inventory from authorized legacy sources for repair and continuity programs. SN74LS153DR remains actively produced and pin-compatible.
What is the pinout compatibility between SN74LS153D and SN74LS153N?
SN74LS153D and SN74LS153N share identical pin functions and numbering, but differ in package type (SOIC vs PDIP) and mechanical dimensions. They are electrically and logically interchangeable, though PCB layout must match the respective footprint - no direct physical replacement without board revision.
Does SN74LS153D support 3.3 V logic levels?
No - SN74LS153D is strictly a 5 V TTL device. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and output swing (VOL ≤ 0.5 V, VOH ≥ 2.7 V) are specified only for VCC = 4.75–5.25 V. Interfacing with 3.3 V systems requires level translation.
Can SN74LS153D be used in place of SN74LS151?
No - SN74LS151 is a single 8:1 multiplexer with different pinout, select logic (3-bit), and output structure (single Y, no W). SN74LS153D provides two 4:1 muxes with shared selects; functional substitution would require redesigning signal routing and control logic.
Where can I find the official SN74LS153D datasheet?
The original SN74LS153D datasheet is archived as TI document SDLS055A (December 1972, revised May 2007). It is publicly accessible via TI's website under "Legacy Logic" documentation - covering absolute maximum ratings, AC/DC characteristics, truth tables, and recommended operating conditions for SN74LS153D.
SN74LS153D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LS
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 400µA, 8mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN74LS153D FAQ
1.How can I place an order for SN74LS153D through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LS153D 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 SN74LS153D reliable?
The price and inventory of SN74LS153D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LS153D is usually 5 days.
3.What payment methods are accepted for SN74LS153D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LS153D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LS153D?
SN74LS153D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LS153D 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 SN74LS153D?
For technical support, including SN74LS153D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LS153D requirements.
6.How does Aetrix verify that SN74LS153D is sourced from the original manufacturer or authorized distributors?
All SN74LS153D 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 SN74LS153D meets industry standards.
7.What is the process for return or replacement of SN74LS153D?
All SN74LS153D units undergo pre-shipment inspection (PSI). If there is an issue with SN74LS153D, 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 SN74LS153D part is unused and in its original packaging.
Return procedure for SN74LS153D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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