NTE2032
Integrated Circuit
BCDtoSevenSegment Decoder Driver
Description:
The NTE2032 is a monolithic integrated circuit in a 16Lead DIP type package that performs the
BCDtosevensegment decoding function and features constantcurrent segment drivers. When
used with the NTE2054 A/D converter, the NTE2032 provides a complete digital readout system with
a minimum number of external parts.
Features:
D
TTL Compatible Input Logic Levels
D
25mA (Typ) Constant Current Segment Outputs
D
Eliminates Need for Output Current Limiting Resistors
D
Pin Compatible with Other Industry Standard Decoders
D
Low Standby Power Dissipation: 18mW Typ
Absolute Maximum Ratings:
DC Supply Voltage (Between Pin1 and Pin10), V+
7V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage (Pin1, Pin2, Pin6, and Pin7), V
IN
5.5V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Voltage, V
O
Output "OFF"
7V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output "ON" (Note 1)
10V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Dissipation (T
A
+55
C), P
D
1W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 55
C
10.5mW/
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, T
opr
0
to +75
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 1.16"
1/32" (1.59mm
0.79mm), 10sec max), T
L
+265
C
. .
Note 1. This is the maximum output voltage for any single output. The output voltage must be consis-
tent with the maximum dissipation and worst case conditions. Example: All segments "ON",
100% duty cycle.
Electrical Characteristics: (T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Supply Voltage Operating Range
V+
4.5
5.0
5.5
V
Supply Current
I+
All Inputs High
3.5
8.0
mA
Output Current Low
V
O
= 2V
18
25
32
mA
Output Current High
V
O
= 5.5V
250
A
Input Voltage High (Logic "1" Level)
2
V
Input Voltage Low (Logic "0" Level)
0.8
V
Input Current High (Logic "1")
2V
30
A
Input Current Low (Logic "0")
0V
40
A
Propagation Delay Time
t
PHL
2.6
s
t
PLH
1.4
s
Truth Table:
Binary
Inputs
Outputs
Binary
State
2
3
2
2
2
1
2
0
a
b
c
d
e
f
g
Displays
0
L
L
L
L
L
L
L
L
L
L
H
0
1
L
L
L
H
H
L
L
H
H
H
H
1
2
L
L
H
L
L
L
H
L
L
H
L
2
3
L
L
H
H
H
L
L
L
H
H
L
3
4
L
H
L
L
L
L
L
H
H
L
L
4
5
L
H
L
H
H
H
L
L
H
L
L
5
6
L
H
H
L
L
H
L
L
L
L
L
6
7
L
H
H
H
H
L
L
H
H
H
H
7
8
H
L
L
L
L
L
L
L
L
L
L
8
9
H
L
L
H
H
L
L
L
H
L
L
9
10
H
L
H
L
L
H
H
H
H
H
L
11
H
L
H
H
H
H
H
L
L
L
L
E
12
H
H
L
L
L
L
L
H
L
L
L
H
13
H
H
L
H
H
H
H
L
L
L
H
L
14
H
H
H
L
L
L
H
H
L
L
L
P
15
H
H
H
H
H
H
H
H
H
H
H
Blank
PDF 
ZIP