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HD74LS192P 参数 Datasheet PDF下载

HD74LS192P图片预览
型号: HD74LS192P
PDF下载: 下载PDF文件 查看货源
内容描述: 同步加/减十进制计数器(双时钟线) [Synchronous Up / Down Decade Counter (dual clock lines)]
分类和应用: 计数器触发器逻辑集成电路光电二极管输出元件时钟
文件页数/大小: 11 页 / 98 K
品牌: RENESAS [ RENESAS TECHNOLOGY CORP ]
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HD74LS192
Waveforms 2
ƒ
max
, t
PLH
, t
PHL
, (Count Down)
t
TLH
Count
Down
90% 90%
10% 10%
(Measure at t
n
+ 1)
t
PHL
t
THL
t
w (H)
t
w (L)
3V
1.3V
1.3V
1.3V
1.3V
1.3V
0V
t
PLH
(Measure
at t
n
+ 0)
V
OH
Q
A
1.3V
1.3V
1.3V
V
OL
t
PHL
(Measure at t
n
+ 4)
t
PLH
(Measure
at t
n
+ 2)
V
OH
V
OL
Q
B
Outputs
Q
C
1.3V
1.3V
t
PHL
(Measure at t
n
+ 6)
t
PLH
(Measure
at t
n
+ 2)
V
OH
V
OL
V
OH
1.3V
1.3V
t
PHL
(Measure at t
n
+ 2)
Q
D
t
PLH
(Measure
at t
n
+ 0)
1.3V
1.3V
V
OL
t
(Measure before 1 clock of t
n
+ 0)
PHL
Borrow
t
PLH
(Measure
at t
n
+ 0)
V
OH
1.3V
1.3V
V
OL
Notes:
1. for
ƒ
max
t
TLH
, t
THL
2.5 ns.
2. t
n
is reference bit time when all outputs are high.
Rev.2.00, Feb.18.2005, page 8 of 10