SN74HC563DWR

Overview

The SN74HC563DWR is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports a recommended operating temperature from -40°C to +85°C. The device features typical propagation delays of 21 ns, maximum input current of 1 μA, and output drive capabilities of ±6 mA at 5 V. It is housed in a 20-pin SOIC package.

Feature Summary

• Features high-current 3-state outputs designed for driving bus lines directly or up to 15 LSTTL loads.
• Provides low power consumption with a maximum ICC of 80 μA.
• Includes a buffered output-enable (OE) input to place outputs in a high-impedance state.

Applications

• Implementing buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the tape-and-reel packaging format required for your assembly process. Confirm that the RoHS compliance status and lead finish match your manufacturing specifications. Ensure the moisture sensitivity level rating aligns with your facility's floor life requirements before placing orders.

Selection Notes

Select this component when an 8-bit transparent latch with inverted outputs and 3-state control is required. It is suitable for applications needing direct bus driving without interface components. Consider the wide 2 V to 6 V operating range for flexibility in various logic families.

Part Context

This part belongs to the SNx4HC563 family of octal transparent D-type latches. It shares functional characteristics with other members of the HC series but is distinguished by its specific pinout and 3-state output configuration. The device is designed for general-purpose digital logic applications requiring data storage and bus isolation.

Replacement Considerations

SN74HC563DW

FAQ

How does the output-enable (OE) input affect internal operations?

The OE input places the outputs in a high-impedance state but does not affect the internal operation of the latches. Data can be entered or retained while the outputs are disabled.

What is the behavior of the outputs when the latch-enable (LE) input is low?

When LE is low, the outputs are latched at the inverses of the levels set up at the D inputs.