JM38510/65553BRA

Overview

The JM38510/65553BRA is an octal bus transceiver with 3-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 transmission between two buses based on direction control logic. The device features high-current outputs capable of driving up to 15 LSTTL loads directly, ensuring signal integrity across backplanes and ribbon cables. It utilizes HCT technology for TTL-voltage compatibility while maintaining low static power consumption. The component is housed in a 20-pin ceramic dual in-line package (CDIP) designed for military-grade reliability.

Feature Summary

• Bidirectional data transfer capability controlled by dedicated direction input
• High-current 3-state outputs provide direct drive for bus lines
• TTL-voltage compatible inputs ensure interface compatibility
• Low static power consumption minimizes overall system energy usage

Applications

• Factory automation and industrial control systems
• Grid infrastructure communication networks
• Telecom infrastructure equipment
• Storage subsystem interconnects

Procurement Notes

Verify the specific ordering suffix matches the required package variant, as the datasheet lists multiple configurations including CDIP and CFP. Confirm that the component meets all necessary environmental and qualification standards for the intended deployment environment before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring robust bidirectional buffering for wide data buses. Ensure the application environment accommodates the specified operating temperature range and that the power supply rails remain stable within the recommended voltage limits to maintain optimal switching performance.

Part Context

This part belongs to the SNx4HCT245 family of octal bus transceivers. It shares functional characteristics with commercial variants but is distinguished by its military-grade packaging and extended temperature specifications. The device serves as a critical interface element for isolating and strengthening signals in complex digital architectures.

Replacement Considerations

SN54HCT245J

FAQ

How does the output enable pin function?

The output enable pin is active low. When asserted high, it places all ports in a high-impedance state, effectively isolating the buses from each other.

What determines the data flow direction?

Data flow is determined by the logic level at the direction control input. A high level directs data from the A bus to the B bus, while a low level directs data from the B bus to the A bus.