DS8881 Datasheet, PDF (2/6 Pages) National Semiconductor (TI) – Vacuum Fluorescent Display Driver

Absolute Maximum Ratings (Note 1)
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Supply Voltage (V_SS – V_BB)
Input Current
38V
10 mA
Output Current
b20 mA
Storage Temperature
b65 C to a150 C
Maximum Power Dissipation at 25 C
Molded Package
2168 mW
Lead Temperature (Soldering 4 sec )
260 C
Derate molded package 17 35 mW C above 25 C
Operating Conditions
Min
Max
Supply Voltage
V_SS
50
95
V_BB
Gnd
b26
Temperature (T_A)
0
a70
Units
V
V
C
Electrical Characteristics (Notes 2 and 3)
Symbol Parameter
Conditions
Min
V_IH
Logical ‘‘1’’
Input Voltage
I_IH
Logical ‘‘1’’
Input Current
V_SS e Max
V_SS e Max
Enable
I_IN e 260 mA
ABCD
I_IN e 1400 mA
Enable A B C D
V_IL
Logical ‘‘0’’
Input Voltage
V_SS e Max
Enable
ABCD
I_IL
Logical ‘‘0’’
Input Current
V_OH Logical ‘‘1’’
Output Voltage
V_SS e Max
Enable
ABCD
Digit Output I_OH e b7 mA
V_IN e 0V
V_IN e V_IL(MAX)
25
V_SS b 2 5
I_OH
Logical ‘‘1’’
V_SS e Max Osc Output V_RC e 0 6V V_OH e 10V
Output Current
I_OS
Output Short-Circuit V_SS e Min Pin R V_RC e 0 6V V_R e 0V
Current
b150
R_OUT Output Pull-Down V_SS e Min Digit Output
30
Resistor
V_OL Logical ‘‘0’’
Output Voltage
I_SS
Supply Current
I_BB
Supply Current
V_SS e Min Osc
V_RC e 1 6V I_OL e 6 mA
Pin R
I_OL e 60 mA
V_SS e Max Digit Output V_ENABLE e 1V I_OL e 10 mA
V_SS e 9 5V I_OH e 0
V_ENABLE e 5 1V
V_ENABLE e 1V
V_SS e 9 5V I_B e 0
V_BB e b26V I_IN e 300 mA
(Note 4)
V_ENABLE e 1V
V_ENABLE e 5 1V
Typ
50
90
50
b0 8
b3 0
Max Units
51
V
15
V
260 mA
10
V
03
V
b1 0 mA
mA
V
50
mA
b450 mA
85
kX
05
V
02
V
V_BB a 1 4 V
12 5 mA
90
mA
b1 5 mA
b5 0 mA
V_B
Filament Bias
Voltage
I_B e 10 mA
V_BB a 6 4 V_BB a 6 9 V_BB a 7 4 V
Note 1 ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed They are not meant to imply that the devices
should be operated at these limits The table of ‘‘Electrical Characteristics’’ provides conditions for actual device operation
Note 2 Unless otherwise specified min max limits apply across the 0 C to a70 C range All typicals are given for T_A e 25 C
Note 3 All currents into device pins shown as positive out of device pins as negative and all voltages referenced to ground unless otherwise noted All values
shown as max or min on absolute value basis
Note 4 Approximately 50% of input current on pins 4 5 6 7 is shunted to V_BB If minimum I_BB is desired then I_IN should be minimized by using resistors in series
with the inputs
2