參數資料
型號: HD151011
廠商: Hitachi,Ltd.
元件分類: 通用總線功能
英文描述: Dual BCD Programmable Counter with Synchronous Preset Enable(帶同步使能預置的可編程雙BCD計數器)
中文描述: 雙BCD碼可編程計數器的同步預置啟用(帶同步使能預置的可編程雙BCD碼計數器)
文件頁數: 8/16頁
文件大小: 75K
代理商: HD151011
HD151011
8
Test Circuit
V
CC
V
CC
J0
J1
S
Pulse generator
Z = 50
Pulse generator
Z = 50
J7
C/T
CLK
CLK
SPE
PR
CLR
C
L
Q
Output
Output
Input
Input
C
L
CO
Note: 1. C
L
includes probe and jig capacitance.
Waveforms – 1
CLK
10 %
V
90 % 90 %
*1
6 ns
ref
6 ns
Vref
10 %
*1
tw
tw
V
IH
GND
CLK
Q
t
PLH
90 %
10 %
50 %
t
TLH
V
OH
V
OL
90 %
10 %
t
THL
50 %
t
PLH
90 %
10 %
50 %
t
TLH
90 %
10 %
t
THL
50 %
CO
t
PHL
t
PHL
V
OH
V
OL
*1
Note:
1.
In case of C/
T
= "L", CLK,
CLK
is V
IH
= 3 V, Vref is 1.3 V
In case of C/T = "H", CLK,
CLK
is V
IH
= V
CC
, Vref is V
CC
×
50%
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