Electronic Components Datasheet Search |
|
GX434 Datasheet(PDF) 9 Page - Gennum Corporation |
|
GX434 Datasheet(HTML) 9 Page - Gennum Corporation |
9 / 9 page 510 -34 -2 9 BINARY ADDRESS DECODER VIDEO INPUTS GX434 SWITCHES V 0 V 1 V 2 V 3 75 75 75 75 0.1 1 2 6 5 4 3 7 9 10 11 12 13 14 8 1 2 6 5 4 3 7 9 10 11 12 13 14 8 1 2 6 5 4 3 7 9 10 11 12 13 14 8 1 2 6 5 4 3 7 9 10 11 12 13 14 8 V 4 V 5 V 6 V 7 75 75 75 75 V 8 V 9 V 10 V 11 75 75 75 75 V 12 V 13 V14 V15 75 75 75 75 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -8V -8V +8V -8V +8V +8V A 0 A 1 330 2-10pF IN 0 IN 1 IN 2 IN 3 +V A 0 A 1 CS OUT -V IN 0 IN 1 IN 2 IN 3 +V A 0 A 1 CS OUT R EXT -V IN 0 GND IN 2 IN 3 +V A 0 A 1 CS OUT -V IN 0 IN 1 IN 2 IN 3 +V A 0 A 1 CS OUT -V A 2 ENABLE A 3 4 5 6 7 -8V +8V GND GND GND GND GND GND GND GND GND 2 3 1 1 2 74HC139 GND GND IN 1 +5V 0.1 8 16 33K 1% 33K 1% 33K 1% 33K 1% R EXT R EXT R EXT APPLICATIONS INFORMATION The GX434 multiplexer is a very high performance, wideband circuit requiring careful external circuit design. Good power supply regulation and decoupling are necessary to achieve optimum results. The circuit designer must use proper lead dress, component placement and PCB layout as in any high frequency circuit. Functionally, the video switches are non-inverting, unity gain bipolar switches with buffered inputs requiring DC coupling and 75 Ω line terminating resistors when directly driven from 75 Ω cable. The output must be buffered to drive 75 Ω lines. This is usually accomplished with the addition of an operational amplifier/ buffer which also allows adjustments to be made to the gain, offset and frequency response of the overall circuit. A typical video routing application is shown in Figure 11. Four ICs are used in a 16 x 1 multiplexer switching circuit. An external address decoder is shown which generates the 16 address and chip enable codes from a binary number. The address inputs to each chip are active high while the chip select inputs are active low. Depending on the application and speed of the logic family used, latches may be required for synchronization where timing and delays are critical. Since the individual crosspoint switching circuits are unidirectional bipolar elements, low crosstalk and high isolation are inherent. The make- before-break switching characteristics of the GX434 means virtually 'glitch' free switching. +5V 0.1 - + 3 2 4 7 -5V 0.1 75 500 6 250 300 100 Video Out All resistors in ohms, all capacitors in microfarads unless otherwise stated. Fig.11 16 x 1 Video Multiplexer Circuit CLC 410 (comlinear) DOCUMENT IDENTIFICATION PRODUCT PROPOSAL This data has been compiled for market investigation purposes only, and does not constitute an offer for sale. ADVANCE INFORMATION NOTE This product is in development phase and specifications are subject to change without notice. Gennum reserves the right to remove the product at any time. Listing the product does not constitute an offer for sale. PRELIMINARY DATA SHEET The product is in a preproduction phase and specifications are subject to change without notice. DATA SHEET The product is in production. Gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. ©Copyright August 1989 Gennum Corporation. Revision date: January 1993. All rights reserved. Printed in Canada. |
Similar Part No. - GX434 |
|
Similar Description - GX434 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |