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Texas Instruments SN74LS153DG4
- Part No.:
- SN74LS153DG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LS153DG4.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,541
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Product details
Overview
SN74LS153DG4 from Texas Instruments is a dual 4-line-to-1-line data selector/multiplexer in 16-pin SOIC package, operating at 0°C to 70°C, with typical propagation delay of 15 ns and maximum supply current of 24 mA at VCC = 5 V. It implements independent 4:1 selection logic per channel using two common select inputs (S0, S1) and separate enable (1G, 2G) controls, used in digital bus routing and address decoding.
For engineers reviewing the SN74LS153DG4 datasheet, SN74LS153DG4 pinout, SN74LS153DG4 application, or SN74LS153DG4 equivalent, key selection considerations include TTL-compatible input thresholds, complementary active-low enables, dual-channel independence, and compatibility with legacy 74LS logic families in industrial control and test equipment design.
Technical Context
The SN74LS153DG4 integrates two identical 4:1 multiplexers sharing select lines S0 and S1, each with dedicated active-low enable (1G, 2G) and output (1Y, 2Y). Each channel selects one of four data inputs (1A0–1A3 or 2A0–2A3) based on binary S0/S1 state, with no internal latching or clocking.
It uses bipolar TTL circuitry with Schottky-clamped transistors, delivering guaranteed fan-out of 20 LS-TTL loads, noise margin of ≥0.4 V (high), and input clamp diodes for transient protection. Output drive capability is ±8 mA at VOH = 2.7 V and VOL = 0.5 V under standard load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74LS TTL - ensures interoperability with legacy LS-series components and predictable DC noise margins. |
| Propagation Delay (tpd) | 15 ns max (VCC = 5 V, TA = 25°C) - defines worst-case timing budget for synchronous bus arbitration. |
| Supply Voltage (VCC) | 4.75 V to 5.25 V - requires tightly regulated 5 V rail; not tolerant of wider voltage ranges. |
| Output Drive (IOH/IOL) | -0.4 mA / 8 mA - supports direct interfacing to multiple LS-TTL inputs without external buffers. |
| Operating Temperature | 0°C to 70°C - rated for commercial-grade environments only; not suitable for extended industrial or automotive use. |
| Input Thresholds (VIH/VIL) | 2.0 V / 0.8 V - defines valid logic-high/low voltage boundaries for reliable signal recognition. |
Pinout & Package
SN74LS153DG4 is housed in a 16-pin SOIC (D) package with 1.27 mm pitch, 7.5 mm body width, and 2.00 mm max height. Pin 1 is marked by a beveled corner or dot, and the device follows standard SOIC pin numbering (counterclockwise from pin 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1G, 2G | Active-low channel enable | Disables respective output (1Y or 2Y) when high; both must be low for channel operation. |
| S0, S1 | Common select inputs | Binary code (S1S0) selects A0–A3 input per channel; no internal decoding logic beyond routing. |
| 1A0–1A3, 2A0–2A3 | Data inputs | Four independent TTL-compatible inputs per channel; no internal pull-ups or level-shifting. |
| 1Y, 2Y | Complementary outputs | Non-inverted, open-collector compatible outputs; each drives one selected input per channel. |
| VCC, GND | Power terminals | Pin 16 (VCC) and Pin 8 (GND); decoupling capacitor placement near these pins is critical for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4:1 multiplexers | Enables simultaneous routing of two separate 4-input data streams using shared select lines-reduces control logic overhead. |
| Common select inputs (S0, S1) | Eliminates need for duplicated address decode logic across channels, simplifying PCB routing and reducing gate count. |
| Separate active-low enables (1G, 2G) | Allows individual channel gating without affecting the other-critical for time-multiplexed resource sharing. |
| TTL-compatible input/output levels | Guarantees interoperability with 74LS, 74L, and 74S families without level-shifting circuitry. |
| Low power consumption (24 mA max ICC) | Reduces thermal load in dense logic arrays and extends battery life in portable test instrumentation. |
Applications
| Address Decoding | Bus Multiplexing |
|---|---|
|
Use Scenario: Selecting between four memory-mapped peripheral registers in an 8-bit microcontroller system. IC Role / Device Role / Timing Role: Data selector routing address-decoded signals to a shared data bus under CPU control. Use Value: Reduces discrete gate count by replacing four 2-input AND gates and one OR gate per channel with single-package logic. |
Use Scenario: Arbitrating access to a shared UART transmit line among four sensor nodes in a diagnostic subsystem. IC Role / Device Role / Timing Role: Time-division multiplexer enabling sequential data injection onto a common serial path. Use Value: Provides deterministic, glitch-free switching with 15 ns propagation delay-ensuring bit-aligned framing integrity. |
| Signal Routing in Test Equipment | Digital Logic Prototyping |
|
Use Scenario: Switching between four calibrated reference voltages into an ADC input during automated calibration sequences. IC Role / Device Role / Timing Role: Precision analog signal selector controlled by digital pattern generator outputs. Use Value: TTL-level enables (1G/2G) allow synchronized gating with test sequencer strobes-minimizing crosstalk during transitions. |
Use Scenario: Implementing configurable logic functions (e.g., parity generation, function table lookup) on breadboard-based educational platforms. IC Role / Device Role / Timing Role: Reconfigurable combinational logic block with user-defined input mapping via DIP switches. Use Value: Dual-channel architecture supports side-by-side truth table evaluation-accelerating student verification of Boolean equivalence. |
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 electrical specs, but in PDIP-16 package with through-hole mounting and 0°C to 70°C rating. | Preferred for prototyping, manual assembly, or legacy board rework where SOIC footprint is unavailable. | Select SN74LS153N when hand-soldering or socket-based validation is required; no change to logic design or timing analysis. |
| SN74LS253N | Functionally identical dual 4:1 MUX, but with complementary outputs (1Y, 1W and 2Y, 2W) and same pinout. | Required when inverted output polarity is needed for downstream logic stages without additional inverters. | Choose SN74LS253N only if complementary outputs are explicitly needed; otherwise SN74LS153DG4 provides simpler interface. |
Compared with SN74LS153N and SN74LS253N, the SN74LS153DG4 offers surface-mount compatibility for high-density PCBs while retaining identical timing, drive strength, and logic behavior-making it optimal for volume production where SOIC assembly is established.
Availability
SN74LS153DG4 is available at Aetrix Electronics and suitable for industrial control panels, legacy test instrumentation, and educational hardware development requiring stable component supply and long-term obsolescence mitigation.
Supply support for SN74LS153DG4 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 and embedded processing technologies with broad industrial, automotive, and consumer product portfolios.
The SN74LS153DG4 belongs to TI's legacy 74LS logic family, designed specifically for reliable, low-power digital signal routing in commercial-grade systems where compatibility with existing TTL infrastructure is essential.
FAQ
What is the function of the 1G and 2G pins on the SN74LS153DG4?
The 1G and 2G pins are active-low enable inputs for the two independent 4:1 multiplexers inside the SN74LS153DG4. When either pin is held high, its corresponding output (1Y or 2Y) is forced low regardless of select or data inputs. Both 1G and 2G must be low for normal multiplexer operation. This allows selective channel disabling in systems requiring dynamic bus isolation.
Does the SN74LS153DG4 support 3.3 V logic levels?
No, the SN74LS153DG4 is a 5 V-only TTL device with VCC specification of 4.75 V to 5.25 V. Its input thresholds (VIL = 0.8 V, VIH = 2.0 V) and output drive characteristics are optimized for 5 V operation. Direct connection to 3.3 V logic may result in unreliable switching or excessive input current; level translation is required for mixed-voltage systems involving the SN74LS153DG4.
What is the maximum clock or data rate supported by the SN74LS153DG4?
The SN74LS153DG4 does not operate synchronously and has no clock input. Its usable data rate is limited by propagation delay (15 ns max) and transition time. For clean signal routing without setup/hold violations, input changes should be spaced ≥20 ns apart. The device is suitable for asynchronous bus switching up to ~25 MHz in well-terminated, low-noise layouts-but is not intended for high-speed serial data paths.
Can the SN74LS153DG4 replace the SN74LS151 in a design?
No-the SN74LS151 is a single 8:1 multiplexer with different pinout, select logic (3-bit S2S1S0), and enable structure. The SN74LS153DG4 provides two independent 4:1 functions with shared 2-bit select lines and separate enables. Substituting them would require PCB redesign, logic rewiring, and timing reassessment-there is no functional or pin-compatible relationship between SN74LS153DG4 and SN74LS151.
Is the SN74LS153DG4 RoHS compliant?
Yes, the SN74LS153DG4 is RoHS compliant, with lead finish specified as NiPdAu (NIPDAU) and MSL rating Level-1-260°C-UNLIM. It meets EU Directive 2011/65/EU requirements for restricted hazardous substances, verified per TI's official packaging documentation dated 2026. No exemptions apply, and the part carries full RoHS certification for commercial deployment.
SN74LS153DG4 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
SN74LS153DG4 FAQ
1.How can I place an order for SN74LS153DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LS153DG4 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 SN74LS153DG4 reliable?
The price and inventory of SN74LS153DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LS153DG4 is usually 5 days.
3.What payment methods are accepted for SN74LS153DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LS153DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LS153DG4?
SN74LS153DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LS153DG4 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 SN74LS153DG4?
For technical support, including SN74LS153DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LS153DG4 requirements.
6.How does Aetrix verify that SN74LS153DG4 is sourced from the original manufacturer or authorized distributors?
All SN74LS153DG4 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 SN74LS153DG4 meets industry standards.
7.What is the process for return or replacement of SN74LS153DG4?
All SN74LS153DG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LS153DG4, 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 SN74LS153DG4 part is unused and in its original packaging.
Return procedure for SN74LS153DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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