器件名称:
M74HCT163B1R
功能描述:
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
文件大小:
329.16KB 共16页
简 介:
M54/74HCT160/161 M54/74HCT162/163 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER . . . . . . . HIGH SPEED fMAX = 50 MHz (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 4 A (MAX.) AT 25 °C OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS BALANCED PROPAGATION DELAYS tPLH = tPHL SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.); VIL = 0.8V (MAX.) PIN AND FUNCTION COMPATIBLE WITH 54/74LS160 163 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) DESCRIPTION M54/74HCT160 Decade, Asynchronous Clear M54/74HCT161 Binary, Asynchronous Clear M54/74HCT162 Decade, Synchronous Clear M54/74HCT163 Binary, Synchronous Clear The M54/74HCT160, 161, 162 and 163 are high speed CMOS SYNCHRONOUS PRESETTABLE COUNTERS fabricated with silicon gate C2MOS technology. They have the same high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The M54/74HCT160/162 are BCD Decade counters and the M54/74HCT161/163 are 4 bit binary counters. The CLOCK input is active on the rising edge. Both LOAD and CLEAR inputs are active Low. Presetting of all four IC’s is synchronous on the rising edge of the CLOCK. The function on the M54/74HCT162/163 is synchronous to CLOCK, while the M54/74HCT160/161 counters are cleared asynchronously. Two enable inputs (TE and PE) and CARRY output are provided to enable easycascading of counters, which facilities easy implementation of N-bit counters without using external g……
