SN74LVCH245

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   . .0.5 V to 6.5 V
Input voltage range, V_I (see Note 1)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   . . . .. . . .0.5 V to 6.5 V
Voltage range applied to any output in the high-impedance
   or power-off state, V_O (see Note 1)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to 6.5 V
Voltage range applied to any output in the high
   or low state, V_O (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to VCC + 0.5 V
Input clamp current, I_IK (V_I < 0 )  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Output clamp current, I_OK (V_O < 0)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . .±50 mA
Continuous output current, I_O (V_O = 0 to V_CC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±50 mA
Continuous current through V_CC or GND  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±100 mA
Maximum power dissipation at T_A = 55°C (in still air) (see Note 3): DB package . . . . . . . . . . .. . . .0.6 W
                                                                                                         DW package  . . . . . . . . . . .. . .1.6 W
                                                                                                         PW package  . . . . . . . . . . . . . .0.7 W
Storage temperature range, T_stg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C

This octal bus transceiver SN74LVCH245 is designed for 2.7-V to 3.6-V V_CC operation; it can interface to a 5-V system environment.

The SN74LVCH245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated.

To ensure the high-impedance state during power up or power down, SN74LVCH245 OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry SN74LVCH245 is provided to hold unused or floating data inputs at a valid logic level.

The SN74LVCH245 is characterized for operation from 40°C to 85°C.