SN54LVTH182504A

Pinout




Specifications

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . 0.5 V to 4.6 V
Input voltage range, V_I (see Note 1)  . . . .. . . . . . . . . . . . . .. . . . . . . . . . . . . . .  . . . . . . . . . . . 0.5 V to 7 V
Voltage range applied to any output in the high or power-off state, V_O (see Note 1)   . . . .   . 0.5 V to 7 V
Current into any output in the low state, I_O : SN54LVTH18504A. . . . . . . . . .. . .. .. . .. . . . . . . . . . . . . .96 mA
                                                                       SN54LVTH182504A (A port or TDO)   . . . . . . . . . . . . .. .  96 mA
                                                                       SN54LVTH182504A (B port)  . . . . . . . .  . . . . . . .  .  . . . . 30 mA
                                                                       SN74LVTH18504A . . . . . . . . . . . . . . . . . . . . . . . . . .  . . 128 mA 
                                                                       SN74LVTH182504A (A port or TDO)  . . . . . . . . . . . . . .  128 mA
                                                                       SN74LVTH182504A (B port)  . . .. . . . .  . . . . . . . . . . . . .  30 mA
Current into any output in the high state, I_O  (see Note 2): SN54LVTH18504A  . . . . . . . . . . . . . . . .  .  48 mA
                                                                                              SN54LVTH182504A (A port or TDO)  . . . .  48 mA
                                                                                              SN54LVTH182504A (B port)  . . . . . . . . . .  30 mA
                                                                                              SN74LVTH18504A . . . . . . . . . . . . . . . .. .. .64 mA  
                                                                                              SN74LVTH182504A (A port or TDO)   . . . .  64 mA
                                                                                              SN74LVTH182504A (B port)  . . . . . . . . . ..  30 mA
Input clamp current, I_IK (V_I < 0)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50 mA
Output clamp current, I_OK (V_O < 0)  . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50 mA
Package thermal impedance, q JA (see Note 3): PM package . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . 67°C/W
Storage temperature range, T_stg 65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .-65 to 150


Description

The 'LVTH18504A and 'LVTH182504A scan test devices with 20-bit universal bus transceivers are members of the Texas Instruments (TI) SCOPE testability integrated-circuit family. 'LVTH18504A and 'LVTH182504A 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, 'LVTH18504A and 'LVTH182504A are designed specifically for low-voltage (3.3-V) V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

In the normal mode, 'LVTH18504A and 'LVTH182504A are 20-bit universal bus transceivers that combine D-type latches and D-type flip-flops to allow data flow in transparent, latched, or clocked modes. The test circuitry of 'LVTH18504A and 'LVTH182504A 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 universal bus transceivers.