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74F821 датащи(PDF) 3 Page - NXP Semiconductors

номер детали 74F821
подробное описание детали  Bus interface registers
PDF  18 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74F821 датащи(HTML) 3 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74F821/822/823/824/825/826
Bus interface registers
1996 Jan 05
3
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
Dn
Data inputs
1.0/1.0
20
µA/0.6mA
74F821
CP
Clock input
1.0/1.0
20
µA/0.6mA
74F822
OE
Output enable input (active low)
1.0/3.0
20
µA/1.8mA
Qn, Qn
Data outputs
1200/106.7
24mA/64mA
Dn
Data inputs
1.0/1.0
20
µA/0.6mA
CP
Clock input
1.0/1.0
20
µA/0.6mA
74F823
CE
Clock enable input (active low)
1.0/3.0
20
µA/1.8mA
74F824
MR
Master reset input (active low)
1.0/3.0
20
µA/1.8mA
OE
Output enable input (active low)
1.0/3.0
20
µA/1.8mA
Qn, Qn
Data outputs
1200/106.7
24mA/64mA
Dn
Data inputs
1.0/1.0
20
µA/0.6mA
CP
Clock input
1.0/1.0
20
µA/0.6mA
74F825
CE
Clock enable input (active low)
1.0/3.0
20
µA/1.8mA
74F826
MR
Master reset input (active low)
1.0/3.0
20
µA/1.8mA
OE
Output enable input (active low)
1.0/3.0
20
µA/1.8mA
Qn, Qn
Data outputs
1200/106.7
24mA/64mA
NOTE: One (1.0) FAST unit load is defined as: 20
µA in the high state and 0.6mA in the low state.
PIN CONFIGURATION – 74F821
24
23
22
21
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
GND
OE
CP
Q0
Q3
Q4
Q5
Q6
VCC
Q7
Q1
Q2
Q8
Q9
D0
D3
D4
D5
D6
D7
D1
D2
D8
D9
SF00482
LOGIC SYMBOL – 74F821
CP
OE
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
13
1
D0 D1 D2 D3 D4 D5 D6 D7
23
45
67
8
9
23
22
21
20
19
18
17
16
VCC = Pin 24
GND = Pin 12
D8 D9
10
11
Q8 Q9
15
14
SF00483



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