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Product Detailed Parameters
- Description：OCTAL BUS TRANSCEIVERS WITH 3-ST
- Series：54ACT
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：Transceiver, Non-Inverting
- Number of Elements：1
- Number of Bits per Element：8
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：24mA, 24mA
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-CFlatPack
- Supplier Device Package：20-CFP
- Grade：-
- Qualification：-
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Overview
The SNJ54ACT245W is an octal bus transceiver with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional data transfer between two eight-bit buses. The device features TTL-compatible inputs and a maximum propagation delay of 8 ns at 5 V. It utilizes a 20-pin Ceramic Flat Pack (CFP) package and is rated for operation in temperatures from -55°C to 125°C.
Feature Summary
- Provides asynchronous two-way communication between data buses
- Minimizes external timing requirements through control-function implementation
- Features low-drive CMOS technology to minimize output ringing
Applications
- Pro Audio
- Video and Signage
- Appliances
- Factory Automation and Control
Procurement Notes
Verify the specific ordering suffix 'W' corresponds to the 20-pin CFP package configuration. Confirm that the military-grade SNJ prefix meets all environmental and reliability standards required for the intended deployment environment. Ensure compatibility with existing system power supplies operating within the specified 4.5 V to 5.5 V range.
Selection Notes
Select this component when designing systems requiring robust, high-speed data bus interfacing with strict temperature tolerance. The ACT series offers balanced output drive suitable for applications where output ringing must be minimized. Verify that the 20-pin CFP footprint aligns with the target printed circuit board layout constraints.
Part Context
This part belongs to the SNx4ACT245 family of octal bus transceivers. The SNJ prefix indicates a military-grade qualification level, while the 'W' suffix designates the ceramic flat pack physical package. This family is designed for general-purpose bus interface applications requiring reliable performance across wide industrial and military temperature ranges.
Replacement Considerations
SNJ54ACT245FK
FAQ
How does the OE pin function affect data flow?
When the Output Enable (OE) pin is low, the device passes noninverted data between the A and B buses based on the DIR input state. When OE is high, the device isolates the buses.
What is the purpose of the DIR pin?
The Direction (DIR) pin controls the direction of data flow. A low logic level directs data from the B bus to the A bus, while a high logic level directs data from the A bus to the B bus.
