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National Semiconductor Electronic Components Datasheet

DS8187 Datasheet

Vacuum Fluorescent Display Driver

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DS8187 pdf
June 1992
DS8187 Vacuum Fluorescent Display Driver
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General Description
The DS8187 is a vacuum fluorescent display tube driver
This device is implemented in CMOS technology to provide
high voltage output drivers and low power Dimming may be
accomplished by either analog or digital input Autoload ca-
pability is accomplished by connecting the DATA OUT pin to
the LOAD ENABLE input pin with the addition of a start bit
to the input data stream
Features
Y 33 Segment Direct Drive 25 b 0 8 mA and 8 b 2 mA
output drivers
Y 49 steps of dimming mask programmable
Y Analog or digital input dimming control
Y DATA OUT pin for cascading
Y Mask options allow reconfiguring of outputs with
respect to shift register bit position
Y Autoload or external load capability
Block Diagram
FIGURE 1
C1995 National Semiconductor Corporation TL F 11220
TL F 11220 – 4
RRD-B30M105 Printed in U S A


National Semiconductor Electronic Components Datasheet

DS8187 Datasheet

Vacuum Fluorescent Display Driver

No Preview Available !

DS8187 pdf
Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Volltage (VCC)
DC Input Voltage (VIN)
www.datashDeCetO4ut.pcuotmVoltage (VOUT)
Storage Temperature Range
b0 3 to a20V
b0 3 to VCCa0 3V
b65 to a150 C
Lead Temperature (Soldering 10 sec )
260 C
Power Dissipation (PD) at 25 C
DIP Board Mount
DIP Socket Mount
Typical Values
iJA DIP Board Mount
iJA DIP Socket Mount
Operating Conditions
Min Max Unit
Supply Voltage (VCC)
DC Input or Output Voltage
Temperature Range
8
0
b40
18
VCC
a85
V
V
C
Electro-Static Discharge (ESD)
2K V
DC Electrical Characteristics
VCC e 8V to 18V All voltages referenced to GND unless otherwise specified
Symbol
Parameter
Conditions
VIH High Level Input Voltage
VIL Low Level Input Voltage
IIH1
High Level Input Current
VIH1 e 5 0V
(Clock Data In Load VK)
IIH2
High Level Input Current
VIH2 e 5 0V T e 25 C
(Blank)
IIH3
High Level Input Current
VIH3 e % 0V T e 25 C
(TEST2)
IIL1
Low Level Input Current
VIL1 e 0V
(Clock Data In Load VK)
IIL2
Low Level Input Current
VIL2 e 0V T e 25 C
(BLANK IN)
IIL3
Low Level Input Current
VIL3 e 0V T e 25 C
(TEST2)
ILI Input Leak Current
(VD)
VIN 0V to 6V
VOH1
High Level Output Voltage
(Low Current Driver)
VCC e 9 5V IOH1 e b0 8 mA
VOH2
High Level Output Voltage
(High Current Drive)
VCC e 9 5V IOH2 e b2 mA
VOH3
VOL1
VOL2
High Level Output Voltage
(DATA OUT PWM OUT)
Low Level Output Voltage
(All Drivers)
Low Level Output Voltage
(DATA OUT PWM OUT)
VCC e 9 5V IOH3 e b200 mA
IOH3 e b20 mA
VCC e 9 5V
IOL1 e 500 mA
IOL1 e 200 mA
IOL1 e 2 mA
VCC e 9 5V IOL2 e 200 mA
ICC Supply Current
No Load
Note 1 Absolute maximum ratings are those values beyond which damage to the device may occur
Min
38
0
b5
b20
b100
b5
b125
b700
b5
VCCb0 8
VCCb0 8
4
45
TBD
TBD
TBD C W
TBD C W
Max
6
08
5
10
20
5
b5
b100
5
6
6
2
1
03
08
20
Units
V
V
mA
mA
mA
mA
mA
mA
mA
V
V
V
V
V
V
V
V
mA
2


Part Number DS8187
Description Vacuum Fluorescent Display Driver
Maker National Semiconductor Corporation
Total Page 12 Pages
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