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參數資料
| 型號： | HD74HCT688 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-CDIP -55 to 125 |
| 中文描述： | 8位數值比較 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 55K |
| 代理商： | HD74HCT688 |
HD74HCT688
8-bit Magnitude Comparator
Description
The HD74HCT688 compares bit for bit two 8-bit words and indicate whether or not they are equal. The
P=Q
output indicates equality when it is low. A single active low enable is provided to facilitate cascading
of several packages and enable comparison of words greater than 8 bits. This device is useful in memory
block decoding applications, where memory block enable signals must be generated from computer address
information.
Features
LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility
High Speed Operation: t
pd
(Data to
P=Q
) = 18 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 4.5 to 5.5 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Function Table
Inputs
Data P, Q
Enable
G
P=Q
P=Q
L
L
P>Q
L
H
P<Q
L
H
X
H
H
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HD74L | 制造商:Panasonic Industrial Company 功能描述:IC |
| HD74LS00FP | 制造商:Renesas Electronics 功能描述:74LS |
| HD74LS00P | 制造商:Panasonic Industrial Company 功能描述:IC 制造商:Hitachi 功能描述:Logic Circuit, Quad 2-Input NAND, LS-TTL, 14 Pin, Plastic, DIP |
| HD74LS00P-E | 制造商:Renesas Electronics Corporation 功能描述: |
| HD74LS01FP(EL-E) | 制造商:Renesas Electronics Corporation 功能描述: |
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