Sanyo LB1240 Specifications

Ordering number:ENN843E

Monolithic Digital IC

LB1240

Fluorescent Display Tube Driver

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 N- channel 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

Package Dimensions

unit:mm
3007B-DIP18
			[LB1240]
		24.0
18				10
				7.62 6.4
					0.25
1				9
				(3.25)	3.85max
(1.84)	2.54	0.5	1.2	0.51min	3.3
					SANYO : DIP18

Absolute Maximum Ratings at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Maximum supply voltage	VCC max		–0.3 to +55.0	V
Output supply voltage	VOUT		–0.3 to VCC	V
Input supply voltage	VIN	VIN>GND	VCC–10 to VCC	V
Maximum output current	IOUT		–30	mA
Allowable power dissipation	Pd max		1.13	W
Operating temperature	Topr		–20 to +75	˚C
Storage temperature	Tstg		–40 to +150	˚C

Allowable Operating Ranges at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Supply voltage	VCC		4.75 to 55.0	V
Input H-level voltage	VIH	VIN>GND, IOUT=–30mA	VCC–10 to VCC–2.8	V
Input L-level voltage	VIL	IOUT≤–30µA	VCC–0.45 to VCC	V

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.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

13101TN (KT)/7067KI/7315KI/7223KI/N111KI No.843–1/3

LB1240

Electrical Characteristics at Ta = 25˚C, VCC=55V

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	Current drain	ICCH	All inputs, VIN=VCC–10V		5.0	8.0	mA
		ICCL	All inputs open	0.3	1.0	1.6	mA
	Output voltage	VOH	VIN=VCC–10V, IOUT=–30mA	VCC–2.0	VCC–1.6		V
		VOL	VIN=VCC–0.3V, IOUT=0mA			200	mV
	Output leakage current	IOL	VIN=VCC–0.3V, VOUT=0.5V	–30			µA
	Pull-down current	IOPL	VOUT=VCC	0.2	0.4	1.0	mA
	Input current	IINH	VIN=VCC–10V	0.6	0.9	1.3	mA

Equivalent Circuit and Pin Assignment

No.843–2/3