Logic device/transceiver/encoder

6-Channel, 3V to 18V Inverter 16-SO -55 to 125

4-Channel, 2.7-V to 3.6-V Buffer 14-SOIC -40 to 85 with Bus-Hold, TTL Compatible CMOS Inputs and 3-State Outputs

16-Channel, 2V to 5.5V Inverter with 3-State Outputs 48-TVSOP -40 to 85

The MC74AC161/74ACT161 and MC74AC163/74ACT163 are high-speed synchronous modulo-16 binary counters. They are synchronously preset for applications in programmable dividers and have two count enable inputs and a terminated count output for versatility in forming synchronous multilevel counters. The MC74AC161/74ACT161 has an asynchronous master reset input that overrides all other inputs and forces the output low. The MC74AC163/74ACT163 has a synchronous reset input that overrides the count and parallel load, allowing the output to reset synchronously on the rising edge of the clock.