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Product Detailed Parameters
- Description：BUS DRIVER, ACT SERIES, 8-BIT
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Circuit：-
- Output Type：-
- Voltage - Supply：-
- Independent Circuits：-
- Delay Time - Propagation：-
- Current - Output High, Low：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SN74ACT563PWLE is an octal D-type transparent latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts input voltages up to 5.5 V. The device features TTL-voltage compatible inputs and inverted outputs capable of driving bus lines directly. It utilizes a flow-through architecture to optimize PCB layout. The PW package denotes a TSSOP form factor, while the LE suffix indicates a specific lead finish or environmental compliance variant.
Feature Summary
- Octal D-type transparent latches with 3-state outputs
- TTL-voltage compatible inputs accepting voltages up to 5.5 V
- Inverted outputs drive bus lines directly without interface components
- Flow-through architecture optimizes PCB layout
Applications
- Buffer registers
- I/O ports
- Bus drivers
- Working registers
Procurement Notes
Verify the exact meaning of the 'LE' suffix against current TI documentation, as standard datasheets list 'PWR' for tape-and-reel TSSOP packages. Confirm RoHS compliance status and lead finish specifications (e.g., NIPDAU) via the official Package Option Addendum. Ensure the ordering part number matches the required temperature range and packaging quantity before procurement.
Selection Notes
Select this component when designing systems requiring octal data storage with high-impedance bus isolation. The ACT series offers faster propagation delays compared to standard HC logic. Verify that the 3-state output capability aligns with the target bus architecture. Consider the TSSOP package dimensions for space-constrained PCB layouts.
Part Context
This device belongs to the SN74ACT family of octal latches. It shares functional similarities with the SN74ACT573 but provides inverted outputs instead of non-inverted ones. The ACT series is designed for high-speed applications requiring CMOS low power consumption with TTL compatibility. It serves as a digital storage element in microprocessor-based systems.
Replacement Considerations
SN74ACT563PWR: Standard tape-and-reel version in the same TSSOP-20 package. SN74ACT563DBR: Alternative SSOP-20 package option from the same manufacturer.
