74ACT253SJX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74ACT253SJX is a dual 4-input multiplexer with 3-STATE outputs, part of the 74ACT logic family. It selects two bits from four sources using common select inputs (S0, S1). The device features individually switchable high impedance states via Output Enable (OE) inputs for bus-oriented systems. It operates within a supply voltage range of 4.5V to 5.5V and an ambient temperature range of -40°C to +85°C. Outputs source or sink 24mA and have TTL-compatible inputs.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual 4-input multiplexing capability with common select inputs
• Non-inverting 3-STATE outputs allowing direct bus interfacing
• TTL-compatible inputs for robust signal reception
• Reduced quiescent current and output leakage

Signal Switches, Multiplexers, Decoders Applications

• Bus oriented system data routing
• Data selector circuits
• Multiplexing applications requiring 3-STATE isolation

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package variant against the datasheet ordering information. The 'SJ' suffix indicates a 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide. Confirm that the component matches the ACT logic family specifications rather than the AC family, as electrical characteristics differ significantly between the two series.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a dual 4-to-1 multiplexer with 3-STATE outputs is required in a SOP package. Ensure the design environment supports the 4.5V to 5.5V operating voltage range. Verify that the 24mA output drive capability meets the load requirements and that the TTL-compatible input thresholds are compatible with the driving logic levels.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the 74ACT253 series, which includes variants in SOIC, SOP, TSSOP, and PDIP packages. The 74AC253 shares similar functionality but operates over a wider voltage range (2.0V to 6.0V) and lacks the specific TTL-compatible input thresholds defined for the ACT series. Both series utilize the same logical structure for dual 4-input multiplexing.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74AC253SC serves as a functional alternative with identical pinout and logic, though it operates at lower voltages and lacks TTL-compatible inputs. Other 74ACT253 variants include the SC (SOIC) and MTC (TSSOP) packages.