SN74ACT1071 Texas instruments

SN74ACT1071

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SN74ACT1071

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Описание

This 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 SN74ACT1071 prevents bus lines from floating without using pullup or pulldown resistors. The high-impedance inputs of these 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 SN74ACT1071 is characterized for operation from -40°C to 85°C.

Designed to Ensure Defined Voltage Levels on Floating Bus Lines in CMOS Systems
Reduces Undershoot and Overshoot Caused By Line Reflections
Repetitive Peak Forward Current . . . I_FRM = 100 mA
Inputs Are TTL-Voltage Compatible
Low Power Consumption (Like CMOS)
ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
Center-Pin V_CC and GND Configuration Minimizes High-Speed Switching Noise

Bits (#)	10
Supply voltage (min) (V)	4.5
Supply voltage (max) (V)	5.5
Operating temperature range (°C)	-40 to 85