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Texas Instruments 74LS573SC — Logic ICs
Texas Instruments

74LS573SC Bus Driver, Active Lifecycle, Bulk

MPN74LS573SC
End of Life

Fairchild 74LS573SC, Bus Driver, Bulk package, active lifecycle.

$0.71Ref. price · indicative, final on quote
74LS573SC datasheet
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MOQ1 pcs
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Specifications

74LS573SC Technical Specifications
ParameterValue
Series*
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Product details

Bus driver identity and lifecycle

The 74LS573SC is an octal D-type transparent latch with three-state outputs, classified as a BUS DRIVER. It is a member of the 74LS low-power Schottky logic family, designed for driving bus lines or buffered output applications where high fan-out and noise margin are required.

Sourcing and availability

As a standard 74LS logic device, the 74LS573SC is widely available through the independent distribution channel.

Frequently asked questions

What is the equivalent for 74LS573SC?

The 74LS573 is a standard logic function with multiple second-source equivalents across manufacturers. For a pin-compatible drop-in, the 74ACT16833DL is a different logic family (ACT) and not a direct functional equivalent without verifying supply voltage and drive characteristics. The 74LS574 is a registered (edge-triggered) flip-flop version of the same latch function — the 74LS573 is transparent, the 74LS574 is clocked. A direct replacement should match the 74LS573's latch enable and three-state output architecture.

Can I replace 74LS573SC with 74LS373?

The 74LS373 is functionally similar (octal D-type transparent latch with three-state outputs), but the pinout differs. The 74LS573 uses a 20-pin DIP/SOIC with the latch-enable and output-enable on the opposite side of the package compared to the 74LS373. They are not pin-compatible without a PCB layout change.