Sanyo LB1240 Specifications
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Digital IC
Fluorescent Display Tube Driver
Ordering number:ENN843E
LB1240
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LB1240 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 an ideal interface for Nchannel MOS devices.
Features
• 8 circuit independent Darlington driver.
• Capable of driving digits or segments.
• Built-in pull-down sink current.
• Rated at 55V/30mA
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusmumixaMV
egatlovylppustuptuOV
egatlovylppustupnIV
tnerructuptuomumixaMI
noitapissidrewopelbawollAxamdP 31.1W
erutarepmetgnitarepOrpoT 57+ot02–
erutarepmetegarotSgtsT 051+ot04–
xam 0.55+ot3.0–V
CC
TUO
V
NI
NI
TUO
Package Dimensions
unit:mm
3007B-DIP18
[LB1240]
24.0
18
1
(1.84)
DNG>V
2.54
10
6.4
7.62
0.25
9
(3.25)
3.85max
3.3
1.20.5
0.51min
SANYO : DIP18
Vot3.0–
CC
Vot01–
CC
CC
03–Am
V
V
˚C
˚C
Allowable Operating Ranges at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppuSV
egatlovlevel-HtupnIV
egatlovlevel-LtupnIV
CC
V
HI
I
LI
I,DNG>
NI
≤ Aµ03–V
TUO
Am03–=V
TUO
13101TN (KT)/7067KI/7315KI/7223KI/N111KI No.843–1/3
0.55ot57.4V
Vot01–
CC
CC
8.2–V
CC
Vot54.0–
CC
V
Electrical Characteristics at Ta = 25˚C, VCC=55V
retemaraPlobmySsnoitidnoC
I
niardtnerruC
egatlovtuptuO
tnerrucegakaeltuptuOI
tnerrucnwod-lluPI
tnerructupnII
HCC
I
LCC
V
V
VNIV=
HO
VNIV=
LO
VNIV=
LO
V
LPO
VNIV=
HNI
Equivalent Circuit and Pin Assignment
LB1240
nimpytxam
V,stupnillA
NIV=CC
nepostupnillA3.00.16.1Am
CC
CC
CC
V=
TUO
CC
V01–6.09.03.1Am
CC
V01–0.50.8Am
I,V01–
I,V3.0–
V,V3.0–
Am03–=
TUO
Am0=002Vm
TUO
V5.0=03–Aµ
TUO
VCC0.2–VCC6.1–
2.04.00.1Am
sgnitaR
tinU
V
No.843–2/3
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