74AC161

® 74AC161 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER s HIGH SPEED: fMAX =125 MHz (TYP.) at VCC = 5V s LOW POWER DISSIPATION: ICC = 8 µA (MAX.) at TA = 25 oC s HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) s 50Ω TRANSMISSION LINE DRIVING CAPABILITY s SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24 mA (MIN) s BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL s OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 161 s IMPROVED LATCH-UP IMMUNITY DESCRIPTION The AC161 is a high-speed CMOS SYNCRONOUS PRESETTABLE COUNTER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power applications mantaining high speed operation similar to eqivalent Bipolar Schottky TTL. It is a 4 bit binary counter with Asynchronous Clear. The circuit have four fundamental modes of operation, in order of preference: synchronous BM (Plastic Package) (Micro Package) ORDER CODES : 74AC161B 74AC161M reset, parallel load, ...