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Partname:SN54LVTH18652A
Description:3.3-V ABT SCAN TEST DEVICES WITH 18-BIT TRANSCEIVERS AND REGISTERS
Manufacturer:Texas Instruments
Datasheet:PDF (561K).
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The 'LVTH18652A and 'LVTH182652A scan test devices with 18-bit bus transceivers and registers are members of the Texas Instruments (TI) SCOPE testability integrated-circuit family. This family of devices supports IEEE Std 1149.1-1990 boundary scan to facilitate testing of complex circuit board assemblies. Scan access to the test circuitry is accomplished via the 4-wire test access port (TAP) interface. Additionally, these devices are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. In the normal mode, these devices are 18-bit bus transceivers and registers that allow for multiplexed transmission of data directly from the input bus or from the internal registers. They can be used either as two 9-bit transceivers or one 18-bit transceiver. The test circuitry can be activated by the TAP to take snapshot samples of the data appearing at the device pins or to perform a self test on the boundary-test cells. Activating the TAP in the normal mode does not affect the functional operation of the SCOPE bus transceivers and registers.

Click here to download SN54LVTH18652A Datasheet
Click here to download SN54LVTH18652A Datasheet
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