Part # 74AC161 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Synchronous presettable 4-bit counter

Part Details:

74AC161 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER s HIGH SPEED: fMAX = 125MHz (TYP.) at VCC = 5V s LOW POWER DISSIPATION:ICC = 8µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY:VNIH = VNIL = 28 % VCC (MIN.) s 50 TRANSMISSION LINE DRIVING DIP SOP TSSOP CAPABILITY s SYMMETRICAL OUTPUT IMPEDANCE:|IOH| = IOL = 24mA (MIN) ORDER CODES s BALANCED PROPAGATION DELAYS: PACKAGE TUBE T & R tPLH tPHL DIP 74AC161B s OPERATING VOLTAGE RANGE:V SOP 74AC161M 74AC161MTR CC (OPR) = 2V to 6V TSSOP 74AC161TTR s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 161 s IMPROVED LATCH-UP IMMUNITY counting and parallel loading and sets all outputson LOW state. A LOW signal on LOAD overrides DESCRIPTION counting and allows information on Parallel Data The 74AC161 is an advanced high-speed CMOS inputs to be loaded into the flip-flop on the next SYNCRONOUS PRESETTABLE COUNTER rising edge of CLOCK. With LOAD and CLEAR fabricated with sub-micron silicon gate and HIGH, PE and TE permit counting when both are double-layer metal wiring C2MOS tecnology. It is a HIGH. Conversely, a LOW signal on either PE and 4 bit binary counter with Asynchronous Clear. TE inhibits counting. The circuit have four fundamental modes of The CARRY OUTPUT is HIGH when TE is HIGH operation, in order of preference: synchronous

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74AC161.pdf Datasheet