Part # 74ACT161 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Synchronous presettable 4-bit counter


Part Details:

74ACT161 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER s HIGH SPEED: fMAX = 290MHz (TYP.) at VCC = 5V s LOW POWER DISSIPATION:ICC = 8µA(MAX.) at TA=25°C s COMPATIBLE WITH TTL OUTPUTSVIH = 2V (MIN.), VIL = 0.8V (MAX.) 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 74ACT161B s OPERATING VOLTAGE RANGE:V SOP 74ACT161M 74ACT161MTR CC (OPR) = 4.5V to 5.5V TSSOP 74ACT161TTR s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 161 s IMPROVED LATCH-UP IMMUNITY counting and allows information on Parallel Datainputs to be loaded into the flip-flop on the next DESCRIPTION rising edge of CLOCK. With LOAD and CLEAR The 74ACT161 is an advanced high-speed CMOS HIGH, PE and TE permit counting when both are SYNCRONOUS PRESETTABLE COUNTER HIGH. Conversely, a LOW signal on either PE and fabricated with sub-micron silicon gate and TE inhibits counting. double-layer metal wiring C2MOS tecnology. It is a The CARRY OUTPUT is HIGH when TE is HIGH 4 bit binary counter with Asynchronous Clear. and counter is in state 15. The circuit have four fundamental modes of The device is designed to interface directly High operation, in order of preference: synchronous Speed CMOS systems with TTL, NMOS and


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74ACT161.pdf Datasheet