0.25
Ordering number:ENN1369C
Monolithic Digital IC
LB1245
Active-Low Input Fluorescent Display Tube Driver
Overview
...
0.25
Ordering number:ENN1369C
Monolithic Digital IC
LB1245
Active-Low Input Fluorescent Display Tube Driver
Overview
The LB1245 has been designed for interfacing low-level digital devices to fluorescent display tubes. Its 8-circuit independent Darlington output stage is used for digit and segment drivers. Equivalent pull-down resistors are built in ; externally connected resistors to prevent ghosts are no longer required. Output is activated when input
voltages are at a low level, making the IC and ideal interface for Nchannel MOS devices. (VDD, VSS of IC can be made common to VDD, VSS of the LB1245.)
Features
8-channel independent Darlington driver. Capable of driving digits or segments. Built-in pull-down sink current. Rated at 55V/30mA
Package Dimensions
unit:mm 3021C-DIP20
[LB1245]
24.0 20 11
1 1.0
10
7.62 6.4
3.3 3.9max
0.51min (3.25)
(0.57)
2.54 0.5
1.2
SANYO : DIP20
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter
Maximum supply
voltage
Output supply
voltage Input supply
voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature
Symbol
VCC max VDD max VOUT max VIN max IOUT max Pd max
VDD≤VCC–2.0V VIN≥ 0
Topr
Tstg
Conditions
Ratings
–0.3 to +55.0 –0.3 to +10.0 –0.3 to VCC VCC–10 to VDD
30 1.13 –20 to +75 –40 to +150
Unit V V V V mA
mW ˚C ˚C
Allowable Operating Ranges at Ta = 25˚C
Parameter
Supply
voltage Input ON level
voltage Input OFF level
voltage
Symbol
VCC VDD VION VIOFF
Con...