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參數資料
| 型號： | HD74HC678 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 16-bit Address Comparator |
| 中文描述： | 16位地址比較器 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 50K |
| 代理商： | HD74HC678 |
HD74HC678
16-bit Address Comparator
Description
The HD74HC678 address comparator simplifies addressing of memory boards and/or other peripheral
devices. The four P inputs are normally hard wired with a preprogrammed address. An internal decoder
determines what input information applied to the 16 A inputs must be low or high to cause a low state at the
output (Y). For example, a positive-logic bit combination of 0111 (decimal 7) at the P input determines
that inputs A
1
through A
7
must be low and that inputs A
8
through A
16
must be high to cause the output to go
low. Equality of the address applied at the A inputs to the preprogrammed address is indicated by the
output being low. The HD74HC678 features a transparent latch and a latch enabled input (C). When C is
high, the device is in the transparent mode. When C is low, the previous logic state of Y is latched.
Features
High Speed Operation
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
相關PDF資料 |
PDF描述 |
|---|---|
| HD74HC679 | 8-Input Positive-NAND Gates 14-CDIP -55 to 125 |
| HD74HC680 | 8-Input Positive-NAND Gates 20-LCCC -55 to 125 |
| HD74HC682 | 8-Input Positive-NAND Gates 14-CDIP -55 to 125 |
| HD74HC684 | 8-Input Positive-NAND Gates 14-CFP -55 to 125 |
| HD74HC688 | 8-bit Magnitude Comparator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HD74HC684P(E) | 制造商:Renesas Electronics Corporation 功能描述: |
| HD74HC688FP(E) | 制造商:Renesas Electronics Corporation 功能描述: |
| HD74HC73P | 制造商:Renesas Electronics 功能描述:74HC Dual J-K Flip-Flop with Preset and Clear Bulk |
| HD74HC74FP-E | 制造商:Renesas Electronics Corporation 功能描述:Flip Flop D-Type Pos-Edge 2-Element 14-Pin SOP 制造商:Renesas Electronics Corporation 功能描述:Logic, 74HC series, SOP-14 |
| HD74HC74FPEL-E | 制造商:Renesas Electronics Corporation 功能描述:Logic, 74HC series, SOP-14 |
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