SN54LV373A

Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . .−0.5 V to 7 V
Switch I/O voltage range, VIO (see Notes 1 and 2) . . . . . . . .−0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−20 mA
I/O diode current, IIOK (VIO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA
Switch through current, IT (VIO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . .±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Package thermal impedance, JA (see Note 3): D package . . . . . . . . . . . . . 73°C/W
                                                     (see Note 3): DB package . . . . . . . . . . . ..82°C/W
                                                     (see Note 3): DGV package . . . . . . . . . . 120°C/W
                                                     (see Note 3): NS package . . . . . . . . . . . . ..64°C/W
                                                     (see Note 3): PW package . . . . . . . . . . ...108°C/W
                                                     (see Note 4): RGY package . . . . . . . . . . . . .39°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . ..−65°C to 150°C

The SN54LV373A devices are octal transparent D-type latches designed for 2-V to 5.5-V VCC operation.

While the latch-enable (LE) input of SN54LV373A is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the logic levels set up at the D inputs.

A buffered output-enable (OE ) input of SN54LV373A can be used to place the eight outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs of SN54LV373A neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.

OE does not affect the internal operations of the latches. Old data of SN54LV373A can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down,OE should be tied to VCC through a pullup resistor; the minimum value of the resistor SN54LV373A is determined by the current-sinking capability of the driver.

The SN54LV373A is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74LV373A is characterized for operation from 40°C to 85°C.