Overview
The SN74HC253N is a dual 4-line to 1-line data selector/multiplexer produced by Texas Instruments. This device is part of the HC series, known for its wide operating voltage range and high-current inverting outputs. It features two independent data selectors/multiplexers with full binary decoding, allowing for the selection of 1-of-4 data sources. The device includes strobe-controlled (OE) 3-state outputs, enabling flexible control over output states.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | PDIP (16 pins), SOIC (16 pins), SSOP (16 pins), SO (16 pins) | |
| Output Drive Capability | Up to 15 LSTTL loads | |
| Typical Propagation Delay (tpd) | 9 ns (typical at VCC = 5 V) | ns |
| Output Drive Current | ±6 mA at VCC = 5 V | mA |
| Input Current | 1 μA max | μA |
| Power Dissipation Capacitance per Multiplexer | 45 pF (no load) | pF |
Key Features
- 3-State version of the 'HC153, with strobe-controlled outputs
- Wide operating voltage range of 2 V to 6 V
- High-current inverting outputs drive up to 15 LSTTL loads
- Low power consumption, with a maximum ICC of 80 μA
- Typical propagation delay of 9 ns at VCC = 5 V
- ±6 mA output drive at VCC = 5 V
- Low input current of 1 μA max
- Permit multiplexing from n lines to one line and perform parallel-to-serial conversion
Applications
The SN74HC253N is suitable for a variety of applications, including:
- Data selection and multiplexing in digital systems
- Parallel-to-serial conversion
- Bus-oriented systems where data needs to be selectively routed
- General-purpose logic circuits requiring high-current drive capabilities
Q & A
- What is the operating voltage range of the SN74HC253N?
The operating voltage range is 2 V to 6 V.
- What is the typical propagation delay of the SN74HC253N at VCC = 5 V?
The typical propagation delay is 9 ns.
- How many LSTTL loads can the outputs of the SN74HC253N drive?
The outputs can drive up to 15 LSTTL loads.
- What is the maximum input current of the SN74HC253N?
The maximum input current is 1 μA.
- What are the package options available for the SN74HC253N?
The device is available in PDIP, SOIC, SSOP, and SO packages.
- What is the operating temperature range of the SN74HC253N?
The operating temperature range is -40°C to 85°C.
- Can the SN74HC253N perform parallel-to-serial conversion?
- What is the power dissipation capacitance per multiplexer for the SN74HC253N?
The power dissipation capacitance per multiplexer is 45 pF (no load).
- How many data sources can each multiplexer select from?
Each multiplexer can select from 1-of-4 data sources.
- Are the outputs of the SN74HC253N 3-state?
