Intel 8253 - Page 193

4-16
Burn-In Circuits
MD 82C54 CERDIP
MR 82C54 CLCC
NOTES:
1. V
CC
= 5.5V ± 0.5V
2. GND = 0V
3. VIH = 4.5V ±10%
4. VIL = -0.2V to 0.4V
5. R1 = 47kΩ±5%
6. R2 = 1.0kΩ±5%
7. R3 = 2.7kΩ±5%
8. R4 = 1.8kΩ±5%
9. R5 = 1.2kΩ±5%
10. C1 = 0.01µF Min
11. F0 = 100kHz ±10%
12. F1 = F0/2, F2 = F1/2, ...F12 = F11/2
R1
R1
R1
R1
R1
R1
R1
R1
R2
R1
R1
R1
R1
R1
R2
R1
R1
R2
R1
VCC
GND
Q5
Q4
A
F1
Q7
A
Q3
F2
Q8
Q2
VCC
GND
F9
F11
F0
A
Q6
GND
Q1
F10
F12
V
CC
A
1
2
3
4
5
6
7
8
9
10
11
12
16
17
18
19
20
21
22
23
24
15
14
13
V
CC
C1
R4
R3
23
24
25
22
21
20
19
11
3 2 14
14 15 16 17 1812 13
28 27 26
10
5
6
7
8
9
VCC/2 Q6 GND
OPEN
VCC/2 F1Q7
R1
R1
R1
R1
R2
R5
GND
Q5
Q4
Q8
OPEN
F2
VCC/2
R1
R1
R1
R1
R1
R2
F9
F10
F11
OPEN
GND
F12
F0
R5 R1 R5 R1 R2
R1R1R1R1R1
VCC Q2 Q1 OPEN
C1
Q3 VCC
VCC
82C54