Document
6118
A6118SLW
VACUUM FLUORESCENT DISPLAY DRIVER
Consisting of eight npn Darlington output stages and the associated common-emitter input stages, these drivers are designed to interface between low-level digital logic and vacuum fluorescent displays. Both devices are capable of driving the digits and/or segments of these displays and are designed to permit all outputs to be activated simultaneously. Pull-down resistors are incorporated into each output and no external components are required for most fluorescent display applications. With any device, the output load is activated when the input is pulled towards the positive supply (active ‘high’). The UDN6118A is furnished in a standard 18-pin plastic DIP; the A6118SLW is in a 20lead wide-body SOIC. Both units operate over the temperature range of -20°C to +85°C. These devices are also available for operation over the temperature range of -40°C to +85°C by changing the part number to UDQ6118A or A6118ELW.
Data Sheet 29313D*
1 2 3 4 5 6 7 8 9 10 NC
20 19 18 17 16 15 14 13 V BB 12 NC 11
FEATURES
I Digit or Segment Drivers I Low Input Current I Integral Output Pull-Down Resistors I High Output Breakdown Voltage I Single or Split Supply Operation I Automotive Capable
Dwg. PP-064-3
ABSOLUTE MAXIMUM RATINGS at TA= +25°C
Supply Voltage, VBB . . . . . . . . . . . . . . . 85 V Input Voltage, VIN . . . . . . . . . . . . . . . . . 20 V Output Current, IOUT . . . . . . . . . . . . -40 mA Allowable Package Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . See Graph Operating Temperature Range, TA . . . . . . . . . . . . . . . . . -20°C to +85°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -55°C to +150°C
Caution: The high input impedance of these devices makes them susceptible to static discharge damage associated with handling and testing. Techniques similar to those used for handling MOS devices should be employed.
Always order by complete part number, e.g., UDN6118A .
6118 VACUUM FLUORESCENT DISPLAY DRIVER
UDN6118A
1 2 3 4 5 6 7 8 9 18
30K
PARTIAL SCHEMATIC
ONE DRIVER (ALL TYPES)
V BB
17 16 15
R IN
27K
14 13 12 11 V BB 10
INPUT R B
15K OUTPUT 125K
GND
Dwg. No. A-10,592C
RIN 10 kΩ
RB 30 kΩ
Dwg. PP-065
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
2.5
2.0
SUFFIX 'A', R θJA = 60°C/W
1.5
1.0
SUFFIX 'LW', R θJA = 70°C/W
0.5
0 25 50 75 100 125 AMBIENT TEMPERATURE IN °C 150
Dwg. GS-009-1
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1977, 2000 Allegro MicroSystems, Inc.
6118 VACUUM FLUORESCENT DISPLAY DRIVER
ELECTRICAL CHARACTERISTICS (over operating temperature range) at VBB = 80 V.
Characteristic Output Leakage Current Output OFF Voltage Output Pull-Down Current Output ON Voltage Input ON Current Symbol IOUT VOUT IOUT VOUT IIN Test Conditions VIN = 0.4 V VIN = 0.4 V Input Open, VOUT = VBB VIN = 2.4 V, IOUT = -25 mA VIN = 2.4 V VIN = 5.0 V Supply Current IBB All Inputs Open All Inputs = 2.4 V Min. — — 450 77.