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參數(shù)資料
| 型號(hào)： | SN54HC590AFK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 計(jì)數(shù)器 |
| 英文描述： | HC/UH SERIES, ASYN POSITIVE EDGE TRIGGERED 8-BIT UP BINARY COUNTER, CQCC20 |
| 封裝： | CERAMIC, CC-20 |
| 文件頁(yè)數(shù)： | 4/14頁(yè) |
| 文件大小： | 230K |
| 代理商： | SN54HC590AFK |
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SN54HC590A, 8-Bit Binary Counters With 3-State Output Registers
Device Status: Active
> Features
> Training
Parameter Name SN54HC590A
Voltage Nodes (V) 6, 5, 2
Vcc range (V)
2.0 to 6.0
Input Level
CMOS
Output Level
CMOS
Output
3S
Clear
Sync
Description
The 'HC590A contain an 8-bit binary counter that feeds an 8-bit storage register. The storage register has
parallel outputs. Separate clocks are provided for both the binary counter and storage register. The binary
counter features direct clear (
) and count-enable (
) inputs. A ripple-carry output (
) is provided for cascading. Expansion is easily accomplished for two stages by connecting
of the first stage to
of the second stage. Cascading for larger count chains can be
accomplished by connecting
of each stage to the counter clock (CCLK) input of the following
stage.
Both CCLK and the register clock (RCLK) input are positive-edge triggered. If both clocks are connected
together, the counter state is always one count ahead of the register. Internal circuitry prevents clocking
from the clock enable.
The SN54HC590A is characterized for operation over the full military temperature range of -55°C to
125°C. The SN74HC590A is characterized for operation from -40°C to 85°C.
Product Folder:SN54HC590A, 8-Bit Binary Counters With 3-State Output Registers
file:////roarer/root/export/projects/bitting2/imagin...atch/20000914/09012000/TXII/09012000/sn54hc590a.html (1 of 3) [9/16/2000 3:42:01 PM]
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