NTE NTE2032

NTE2032
Integrated Circuit
BCD–to–Seven–Segment Decoder Driver
Description:
The NTE2032 is a monolithic integrated circuit in a 16–Lead DIP type package that performs the
BCD–to–seven–segment decoding function and features constant–current 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), VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Output Voltage, VO
Output “OFF” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Output “ON” (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V
Device Dissipation (TA ≤ +55°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Derate Above 55°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.5mW/°C
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 1.16” ±1/32” (1.59mm ±0.79mm), 10sec max), TL . . +265°C
Note 1. This is the maximum output voltage for any single output. The output voltage must be consistent with the maximum dissipation and worst case conditions. Example: All segments “ON”,
100% duty cycle.
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Min
Typ
Max
Unit
4.5
5.0
5.5
V
All Inputs High
–
3.5
8.0
mA
Output Current Low
VO = 2V
18
25
32
mA
Output Current High
VO = 5.5V
–
–
250
µA
Input Voltage High (Logic “1” Level)
2
–
–
V
Input Voltage Low (Logic “0” Level)
–
–
0.8
V
Supply Voltage Operating Range
V+
Supply Current
I+
Test Conditions
Input Current High (Logic “1”)
2V
–30
–
–
µA
Input Current Low (Logic “0”)
0V
–40
–
–
µA
tPHL
–
2.6
–
µs
tPLH
–
1.4
–
µs
Propagation Delay Time
Truth Table:
Inputs
Outputs
Binary
State
23
22
21
20
a
b
c
d
e
f
g
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
Displays
Pin Connection Diagram
BCD Input 21 1
16 V (+)
BCD Input 22 2
15 Seg Driver f
N.C. 3
14 Seg Driver g
N.C. 4
13 Seg Driver a
N.C. 5
12 Seg Driver b
BCD Input 23 6
11 Seg Driver c
BCD Input 20 7
10 Seg Driver d
GND 8
9 Seg Driver e
16
9
1
8
.870 (22.0) Max
.260 (6.6)
Max
.200 (5.08)
Max
.100 (2.54)
.700 (17.78)
.099 (2.5) Min