DS7880 Datasheet, PDF (2/6 Pages) National Semiconductor (TI) – High Voltage 7-Segment Decoder/Driver

Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
V_CC
7V
Input Voltage (Except BI)
6V
Input Voltage (BI)
V_CC
Segment Output Voltage
80V
Power Dissipation
600 mW
Maximum Power Dissipation at 25 C
Cavity Package
Molded Package
1509 mW
1476 mW
Derate cavity package 10 06 mW C above 25 C derate molded package
11 81 mW C above 25 C
Transient Segment Output Current
(Note 4)
Storage Temperature Range
Lead Temperature (Soldering 4 sec )
Operating Conditions
Min
Supply Voltage (V_CC)
DS7880
45
DS8880
4 75
Temperature (T_A)
DS7880
DS8880
b55
0
50 mA
b65 C to a150 C
260 C
Max
55
5 25
a125
a70
Units
V
V
C
C
Electrical Characteristics (Notes 2 and 3)
Symbol
Parameter
Conditions
Min Typ Max Units
V_IH
V_IL
V_OH
V_OL
I_IH
I_IL
Logical ‘‘1’’ Input Voltage
Logical ‘‘0’’ Input Voltage
Logical ‘‘1’’ Output Voltage
Logical ‘‘0’’ Output Voltage
Logical ‘‘1’’ Input Current
Logical ‘‘0’’ Input Current
V_CC e Min
V_CC e Min
V_CC e Min I_OUT e b200 mA RBO
V_CC e Min I_OUT e 8 mA RBO
V_CC e Max Except BI
V_IN e 2 4V
V_IN e 5 5V
V_CC e Max V_IN e 0 4V
Except BI
BI
20
V
08
V
24 37
V
0 13 0 4
V
2
15
mA
4
400 mA
b300 b600 mA
b1 2 b2 0 mA
I_CC
Power Supply Current
V_CC e Max R_p e 2 2k All Inputs e 0V
27
43 mA
V_CD
Input Diode Clamp Voltage V_CC e Max T_A e 25 C I_IN e 12 mA
b0 9 b1 5 V
I_O
SEGMENT OUTPUTS
All Outputs e 50V
‘‘ON’’ Current Ratio
I_OUTb e Ref
Outputs a f and g 0 84 0 93 1 02
Outut c
1 12 1 25 1 38
Output d
0 90 1 00 1 10
Output e
0 99 1 10 1 21
I_b ON
V_SAT
I_CEX
V_BR
t_pd
Output b ‘‘ON’’ Current
Output Saturation Voltage
Output Leakage Current
Output Breakdown Voltage
Propagation Delays BCD
Input to Segment Output
V_CC e 5V V_OUTb e 50V
All Other Outputs ^t 5V
T_A e 25 C
R_p e 18 1k
R_p e 7 03k
R_p e 3 40k
R_p e 2 20k
V_CC e Min R_p e 1kg5% I_OUTb e 2 mA (Note 5)
V_OUT e 75V BI e 0V R_p e 2 2k
I_OUT e 250 mA BI e 0V R_p e 2 2k
V_CC e 5V T_A e 25 C
0 15 0 20 0 25 mA
0 45 0 50 0 55 mA
0 90 1 00 1 10 mA
1 35 1 50 1 65 mA
08
25
V
0 003 3
mA
80 110
V
04
10
ms
BI to Segment Output
04
10
ms
RBI to Segment Output
07
10
ms
RBI to RBO
04
10
ms
Note 1 ‘‘Absolute Maximum Rating’’ 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 b55 C to a125 C temperature range for the DS7880 and across the 0 C to a70 C range for
the DS8880 All typical values are for T_A e 25 C and V_CC e 5V
Note 3 All currents into device pins shown as positive out of device pins as negative all voltages referenced to ground unless otherwise noted All values shown
as max or min or absolute value basis
Note 4 In all applications transient segment output current must be limited to 50 mA This may be accomplished in dc applications by connecting a 2 2k resistor
from the anode-supply filter capacitor to the display anode or by current limiting the anode driver in multiplex applications
Note 5 For saturation mode the segment output currents are externally limited and ratioed
2