SN74ACT1073

`Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . .0.5 V to 7 V
`Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to VCC + 0.5 V
`Continuous input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . .±20 mA
`Positive-peak input clamp current, IIK (VI > VCC) (tw < 1 ms, duty cycle < 20%). . . . . . . . . . . . . . . . . 100 mA
`Negative-peak input clamp current, IIK (VI < 0) (tw < 1 ms, duty cycle < 20%) . . . . . . . . . . . . . . . . . .100 mA
`Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated  nditions for extended periods may affect device reliability.

NOTE 1: The input negative-voltage rating may be exceeded if the input clamp-current rating is observed.

This SN74ACT1071 device is designed to terminate bus lines in CMOS systems. The integrated low-impedance diodes clamp the voltage of undershoots and overshoots caused by line reflections and ensure signal integrity. The device also contains a bus-hold function that consists of a CMOS-buffer stage with a high-resistance feedback path between its output and its input. The SN74ACT1073 prevents bus lines from floating without using pullup or pulldown resistors.

The high-impedance inputs of these SN74ACT1071 internal buffers are connected to the input terminals of the device. The feedback path on each internal buffer stage keeps a bus line tied to the bus holder at the last valid logic state generated by an active driver before the bus switches to the high-impedance state.

The SN74ACT1073 is characterized for operation from 40°C to 85°C.