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Product Detailed Parameters
- Description：MULTIPLEXER BIPOLAR 3-ST 8-IN 16
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Type：-
- Circuit：-
- Independent Circuits：-
- Current - Output High, Low：-
- Voltage Supply Source：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SN74AS253ANSR is a quad 2-line to 1-line data selector/multiplexer from Texas Instruments' AS logic series. It features four independent multiplexing circuits in a 20-pin SOIC package. Key electrical parameters include a propagation delay of 6.3 ns, low-level output current of 48 mA, and high-level output current of -24 mA. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a working temperature range of 0°C to +70°C.
Feature Summary
- Provides four independent 2-to-1 multiplexing channels for signal routing
- Delivers high-speed data selection with low propagation delay characteristics
- Features robust bipolar output drive capability for reliable interfacing
Applications
- Data acquisition systems requiring signal switching
- Digital communication interfaces for channel selection
- Microprocessor-based systems for address decoding or data routing
Procurement Notes
Verify the specific suffix 'ANSR' corresponds to the SOIC-20 package and tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the AS series bipolar technology requirements align with the target system's power and speed specifications.
Selection Notes
Select this component when multiple independent 2-to-1 multiplexing functions are required in a compact surface-mount form factor. The AS series offers faster performance than standard TTL but consumes more power than CMOS alternatives. Verify that the 48 mA sink current meets the load requirements of the downstream circuitry.
Part Context
This device belongs to the SN74ASxxA family, which utilizes Advanced Schottky bipolar technology. This family provides higher speed performance compared to standard 74LS series devices while maintaining compatible pinouts and logic functions. The SN74AS253 specifically addresses applications needing multiple small-scale multiplexing operations.
FAQ
What is the logic function of the SN74AS253ANSR?
It functions as a quad 2-line to 1-line data selector/multiplexer, containing four independent multiplexing circuits.
Does the SN74AS253ANSR have tri-state outputs?
No, the SN74AS253ANSR does not feature tri-state outputs; it provides standard non-inverting outputs.
