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7490 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
7490 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER ON-Semiconductor
ON Semiconductor ON-Semiconductor
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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

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与其他制造商的搜索 '7490'

零件编号产品描述 (功能)PDF生产厂家
74LS90 DECADE COUNTER / DIVIDE-BY-TWELVE COUNTER / 4-BIT BINARY COUNTER 视图 Motorola => Freescale
HD74HC160 Synchronous Decade Counter (Direct Clear)/Synchronous 4-bit Binary Counter (Direct Clear)/Synchronous Decade Counter (Synchronous Clear)/Synchronous 4-bit Binary Counter (Synchronous Clear) 视图 Renesas Electronics
HD74HC160 Synchronous Decade Counter (Direct Clear)/Synchronous 4-bit Binary Counter (Direct Clear)/Synchronous Decade Counter (Synchronous Clear)/Synchronous 4-bit Binary Counter (Synchronous Clear) 视图 Hitachi -> Renesas Electronics
SN74LS290 DECADE COUNTER; 4-BIT BINARY COUNTER 视图 Motorola => Freescale
M54HC4520F1R HC4520 DUAL 4 BIT BINARY COUNTER HC4518 DUAL DECADE COUNTER 视图 STMicroelectronics
HD74HC668 Synchronous UP/Down Decade Counter Synchronous Up/Down 4-bit binary Counter 视图 Hitachi -> Renesas Electronics
HD74HC668 Synchronous UP/Down Decade Counter Synchronous Up/Down 4-bit binary Counter 视图 Renesas Electronics
HEF4029B Synchronous up/down counter, binary/decade counter 视图 Philips Electronics
SN54LSXXXJ DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER 视图 Motorola => Freescale
M74HC192C1R HC193 - SYNCHRONOUS UP/DOWN BINARY COUNTER HC192 - SYNCHRONOUS UP/DOWN DECADE COUNTER 视图 STMicroelectronics

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