LB-1240 Datasheet
LOW PROFILE TRANSFORMER, PRI:115/230V, SEC:12VA
Download: LB-1240 Datasheet 
LB-1240
LOW PROFILE TRANSFORMER, PRI:115/230V, SEC:12VA
Stancor
Telephone Coupling, Low Profile PC and Split Bobbin PC Transformers
Telephone Coupling/impedance Matching Transformers Split Bobbin Pc Mount Transformers Side Winder
Series
FEATURES
C Small And Lightweight, All Items Weigh Under 1 Oz. C Low Insertion Losses C Some Items Offer Dual
Secondary Windings for Greater Flexibility c Low Distortion 0.5% Max.
Specifications
Maximum Operating Temperature: 105 C. Dielectric Strength: 1500 Vrms. Maximum Distortion: 0.5% @
300-3.5 Khz. Frequency Response: 0.5 Db 300-3.5 Khz. Longitudinal Balance: 60 Db Min @ 200-1 Khz,
40 dB min. @ 4 KHz.
Stock No.
Mfr. s Type
Impedance
Primary
Secondary
Primary DCR
15% 10%
Dimensions Inches WL HB C
EACH Weight (Oz.) 1-49
928-9012 TTPC-2* A 600
928-7615 TTPC-3* A 600 C.T. 600 C.T.
928-9020 TTPC-6 B 600
600 C.T.
928-9022 TTPC-7* B 600
928-9024 TTPC-8* B 600 C.T. 600 C.T.
928-7620 TTPC-9* B 600
600/600
928-9500 TTPC-13 C 600
600 C.T.
LB-1240 Datasheet
Fluorescent Display Tube Driver
Download: LB-1240 Datasheet
LB-1240
Fluorescent Display Tube Driver
Ordering number:ENN843E
Monolithic Digital IC
LB1240
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.
Package Dimensions
unit:mm 3007B-DIP18
[LB1240]
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
Parameter Maximum Supply Voltage Output Supply Voltage Input Supply Voltage Maximum Output Current
Allowable power dissipation Operating temperature Storage temperature
Symbol
VCC max VOUT VIN IOUT Pd max
VIN>GND
(1.84)
2.54 0.5
Conditions
Allowable Operating Ranges at Ta = 25 C
Parameter Supply voltage Input H-level voltage Input L-level voltage
Symbol
VCC VIH VIL