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Product Detailed Parameters
- Description：AUTOMOTIVE EIGHT-CHANNEL 4.5V-TO
- Series：74ACT
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Logic Type：Inverter
- Number of Circuits：8
- Number of Inputs：8
- Features：3-State
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：80 µA
- Current - Output High, Low：24mA, 24mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：9.6ns @ 5V, 50pF
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Supplier Device Package：20-TSSOP
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The SN74ACT240QPWRQ1 is an automotive-grade octal buffer or driver with 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +125°C. The device features balanced CMOS outputs capable of continuous ±24mA drive at 5V, with short burst support up to ±75mA. It includes TTL-compatible inputs and achieves a maximum propagation delay of 9.6ns at 5V with a 50pF load.
Feature Summary
- AEC-Q100 qualified for automotive applications with specified temperature grades and ESD classification levels.
- Balanced CMOS 3-state outputs providing high-impedance states and symmetrical sourcing/sinking capabilities.
- TTL-compatible CMOS inputs designed for reduced input voltage thresholds to interface with standard logic devices.
Applications
- Smartphone handset circuits
- Network switch signal buffering
- Health and fitness wearable electronics
Procurement Notes
Verify the specific package variant (TSSOP-20) against the datasheet mechanical drawings. Confirm AEC-Q100 qualification status and ensure the ordering suffix matches the required production revision. Validate thermal resistance parameters for the specific PCB layout to maintain junction temperatures within absolute maximum ratings during operation.
Selection Notes
Select this component when driving 50Ω transmission lines or long traces requiring significant current drive capability. Ensure the system design accommodates the 4.5V to 5.5V supply range and that unused inputs are properly terminated to prevent oscillation. Consider the 9.6ns maximum propagation delay for timing-critical paths in the application circuit.
Part Context
This part belongs to the SN74ACT240-Q1 family of automotive octal buffers. It shares functional characteristics with other members of the ACT series but is specifically qualified for automotive environments. The PW suffix indicates the TSSOP-20 package option, distinct from VSSOP or WQFN variants available in the same logical family.
Replacement Considerations
SN74ACT240PWRG4
