4N51 データシートの表示（PDF） - Micropac Industries
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4N51 Datasheet PDF : 7 Pages
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4N51, 4N52,
67023 4N53, 4N54
HERMETIC, NUMERIC AND HEXIDECIMAL DISPLAYS
4N51, 4N52, 4N54 Logic
DATA INPUT
(LOW LEVEL DATA)
t SETUP
1.5V
t HOLD
1.5V
DATA INPUT
(HIGH LEVEL DATA)
1.5V
ENABLE
INPUT
1.5V
10%
1.5V
t LH
90%
1.5V
tW
FIGURE 1 Timing Diagram of 4N51, 4N52 and 4N54 Series Logic
PIN NO.
Vcc 7
ENABLE 5
LOGIC 8
1
2
INPUT 3
DP (2) 4
DC1
DC2
DC4
DC8
LATCH
MEMORY
DP
MATRIX
DECODER
BLANKING (3)
CONTROL
4
DP
LED MATRIX
DRIVER
LED MATRIX
GROUND 6
FIGURE 2 Block Diagram of 4N51, 4N52 and 4N54 Series Logic
TRUTH TABLE
BCD DATA (1)
X8 X4 X2 X1 4N51/4N52
LLLL
0
4N54
0
LLLH
1
1
L L HL
2
2
L L HH
3
3
L HL L
4
4
L HL H
5
5
L HHL
6
6
L HHH
7
7
HL L L
8
8
HL L H
9
9
HL HL
A
H L H H (BLANK) B
H H L L (BLANK) C
HHL H
.....
D
H H H L (BLANK) E
H H H H (BLANK) F
DECIMAL PT. (2)
ENABLE (1)
BLANKING (3)
ON
OFF
LOAD DATA
LATCH DATA
DISPLAY ON
DISPLAY OFF
VDP=L
VDP=H
VE =L
VE =H
VB =L
VB =H
NOTES:
1. H = Logic High: L = Logic Low. With the
enable input at logic high changes in BCD
input levels or D.P. input have no effect
upon display memory, displayed character,
or D.P.
2. The decmal point, DP, pertains only to
the 4n51 and 4n52 displays.
3. The blanking control, B, pertains only
to the 4n54 hexadecimal display.
Blanking input has no effect upon memory.
PIN FUNCTION
1 Plus
2 Numeral One
3 Numeral One
4 DP
5 Open
6 Open
7 Vcc
8 Minus/Plus
4N53 Over Range Character
NUMERAL ONE
7 Vcc
MINUS PLUS
PLUS
dp
3
2
4
8
1
TRUTH TABLE FOR TYPICAL DRIVING CIRCUIT
CHARACTER
+
-
1
DECIMAL POINT
BLANK
PIN
1 2,3 4 8
HXXH
L XXH
XHXX
XXHX
LLLL
580
100
580
150
150
NOTES:
L: Line switching transistor in figure 3 cutoff.
H: Line transistor in figure 3 satuated
X: Don't Care.
FIGURE 3
TYPICAL DRIVING CIRCUIT
MICROPAC INDUSTRIES, INC. OPTOELECTRONIC PRODUCTS DIVISION • 725 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 487-6918
www.micropac.com E-MAIL: optosales@micropac.com
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