Display Driver. NTE2021 Datasheet

NTE2021 Driver. Datasheet pdf. Equivalent

Part NTE2021
Description Integrated Circuit 8-Digit/Segment Fluorescent Display Driver
Feature NTE2021 & NTE2022 Integrated Circuit 8–Digit/Segment Fluorescent Display Driver Description: The NTE.
Manufacture NTE
Datasheet
Download NTE2021 Datasheet




NTE2021
NTE2021 & NTE2022
Integrated Circuit
8–Digit/Segment Fluorescent Display Driver
Description:
The NTE2021 and NTE2022 consist of eight NPN Darlington output stages and the associated com-
mon–emitter input stages in an 18–Lead DIP type package. These devices are designed to interface
between low–level digital logic and vacuum fluorescent displays. They are capable of driving the dig-
its and/or segments of these displays and are designed to permit all outputs to be activated simulta-
neously. Pulldown resistors are incorporated into each output and no external components are re-
quired for most fluorescent displays.
The NTE2020 is compatible with TTL, Schottky TTL, DTL and 5V CMOS. The NTE2021 device is
intended for use with MOS (PMOS & CMOS) logic operating from supply voltages of 6V to 15V.
Features:
D Digit or Segment Drivers
D Low Input Current
D Integral Output Pull–Down Resistors
D Low Power
D Reliable Monolithic Construction
D High Output Breakdown Voltage
Absolute Maximum Ratings: (TA = +25°C, Note 1)
Supply Voltage, VBB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85V
Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
Output Current, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40mA
Allowable Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0mW/°C
Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +85°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Note 1. Voltages are with reference to GND unless otherwise specified
Recommended Operating Conditions:
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage
Input ON Voltage
NTE2021
NTE2022
Output ON Current
VBB
VIN
IOUT
5 – 70 V
2.4 – 15 V
4.0 – 15 V
– – –25 mA
Note 2. Positive (negative) current is defined as going into (coming out of) the specified device pin.



NTE2021
Electrical Characteristics: (TA = 20° to +85°C, VBB = 80V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Leakage Current
Output OFF Voltage
Output PullDown Current
Output ON Voltage
NTE2021
NTE2022
Input ON Current
NTE2021
NTE2022
Supply Current
NTE2021 & NTE2022
IOUT
VOUT
IOUT
VOUT
IIN
IBB
VIN = 400mV
VIN = 400mV
VOUT = VBB, Input Open
VIN = 2.4V, IOUT = 25mA
VIN = 4.0V, IOUT = 25mA
VIN = 2.4V
VIN = 5.0V
VIN = 4.0V
VIN = 15.0V
All Inputs Open
– – 15 µA
– – 1.0 V
450 650 1100 µA
77 78
77 78
V
V
120 225 µA
375 650 µA
130 250 µA
675 1150 µA
10 100 µA
NTE2021
All Inputs = 2.4V
6.0 9.0 mA
NTE2022
All Inputs = 4.0V
6.0 9.0 mA
Partial Schematic
(One Driver)
Pin Connection Diagram
VBB
30k
Input RIN
GND
RB
27k
15k
Output
125k
VEE
NTE2021
NTE2022
RIN
10k
20k
RB
30k
20k
Input 1 1
Input 2 2
Input 3 3
Input 4 4
Input 5 5
Input 6 6
Input 7 7
Input 8 8
GND 9
18 Output 1
17 Output 2
16 Output 3
15 Output 4
14 Output 5
13 Output 6
12 Output 7
11 Output 8
10 VBB







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