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Ordering number:ENN3641
CMOS IC
LC7824
Analog Function Switch
Overview
The LC7824 is an analog switch incorporating seven switches into a single chip, making it ideal for audio and video applications in amplifiers, receivers and television equipment. The LC7824 is controlled from a three-wire bus (C2B), allowing for an easy interface with a microcontroller. In addition, a device select pin allows two devices to be connected to the bus. The LC7824 operates from a 9V supply and is available in 16-pin DIPs.
Package Dimensions
unit:mm 3006C-DIP16
[LC7824]
19.0 16 9
1.09
1.2
Features
* Audio and video bandwidth. * Seven analog switches. * Select pin allows two LC7824s to be connected to a common, serial data bus. * Easy microcontroller interface. * 9V supply. * 16-pin DIP.
3.4 3.65max
0.51min
(3.0)
(0.61)
2.54
0.48
SANYO : DIP16
Specifications
Absolute Maximum Ratings
Parameter Maximum supply voltage Logic-level input voltage range Analog switch input voltage range Voltage differential across switches when closed Allowable power dissipation Operating temperature range Storage temperature range Symbol VDD max VEE max VI1 VI2 VON Pd max Topr Tstg Conditions Ratings -0.3 to +10 -10 to +0.3 -0.3 to +10
VEE-0.3 to VDD+0.3
0.5 100 -30 to +75 -40 to +125
Recommended Operating Conditions at Ta = 25C
Parameter Supply voltage Symbol VDD VEE Conditions Ratings 4.5 to 9 -9 to 0 Unit V 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
51501TN (KT)/O050JN No.3641-1/4
0.25
1
8
6.4
Unit V V V V V mW C C
7.62
LC7824
Electrical Characteristics at Ta = -30 to +75C, VDD=4.5 to 9V
Parameter Supply current C2B input low-level voltage C2B input high-level voltage Select pin input low-level voltage Select pin input high-level voltage Analog switch ON resistance Symbol IDD VIL1 VIH1 VIL2 VIH2 RON fT H2, H3 THD FTH CT IIL IIH IOFF VIN VH VDD=5V, VEE=-5V VDD=9V, VEE=-9V VIN=1V, -1dB down VIN=1V, -3dB down VIN=1V, f=5MHz VIN=1V, f=1kHz VIN=0.1V, f=1kHz VIN=1V, f=5MHz VIN=1V, f=5MHz VDD=9V, VEE=-9V, VI=0V VDD=9V, VEE=-9V, VI=9V VDD=9V, VEE=-9V, VI=-9 to +9V -10 VEE 0.3 -10 10 +10 VDD 0 0 60 0.01 0.05 50 50 VDD=9V, VEE=-9V VSS 4.2 VSS
0.7VDD
Conditions
Ratings min typ max 1 1 9
0.3VDD
Unit mA V V V V 5 MHz MHz dB % % dB dB A A A V V
VDD 150 110
Passband Second and third order harmonic distortion Total harmonic distortion Feedthrough Crosstalk Input low-level current Input high-level current Switch leakage current Analog switch input voltage C2B input hysteresis width
10
Pin Assignment
Top view
Block Diagram
No.3641-2/4
LC7824
Pin Description
Number 1, 2, 3, 12, 13, 15 4, 14, 16 5 6 7 8 9 10 11 Name IN1 to IN6 Description Analog switch inputs/outputs
COM1 to COM3 Analog switch common inputs/outputs VEE CE DI CL VSS S VDD -4.5 to -9V supply voltage Schmitt-trigger, chip enable Schmitt-trigger, serial data input Schmitt-trigger, clock input Ground Device select input 4.5 to 9V supply voltage
Timing Characteristics
Ta = -30 to +75C, VDD=4.5 to 9V
Parameter LOW-level clock pulsewidth HIGH-level clock pulsewidth Setup time Symbol toL toH tsetup t1 Serial data input timing t2 t3 Conditions Ratings min 0.5 0.5 0.5 0 0.5 0.5 typ max Unit s s s s s s
Functional Description The LC7824 analog switch is controlled from a three-wire bus, which comprises chip-enable, clock and serial data inputs. The 16-bit serial input code comprises eight address bits and eight control bits as shown in figure 1.
Figure 1. Data input The address data is latched on the rising edge of CE, and the input data, on the falling edge as shown in figure 2.
Figure 2. Input timing When S (pin 10) is LOW, the device address is 01101110 (6EH), and when HIGH, 01101111 (6FH). Each switch is turned ON if the corresponding control bit is 1, and OFF, if 0. The X bit is ignored.
No.3641-3/4
LC7824
Typical Applications
Figure 3. Video switching (1)
Figure 4. Video switching (2)
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of May, 2001. Specifications and information herein are subject to change without notice.
PS No.3641-4/4

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