SN54LS92J

十进制计数器;除以十二个月的计数器; 4位二进制计数器 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER

The SN54/74LS90, SN54/74LS92 and SN54/74LS93 are high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-five LS90, divide-by-six LS92 or divide-by-eight LS93 section which are triggered by a HIGH-to-LOW transition on the clock inputs. Each section can be used separately or tied together Q to CP to form BCD, bi-quinary, modulo-12, or modulo-16 counters. All of the counters have a 2-input gated Master Reset Clear, and the LS90 also has a 2-input gated Master Set Preset 9.

• Low Power Consumption . . . Typically 45 mW

• High Count Rates . . . Typically 42 MHz

• Choice of Counting Modes . . . BCD, Bi-Quinary, Divide-by-Twelve, Binary

• Input Clamp Diodes Limit High Speed Termination Effects