GX4314L Low Power, Wideband 4 x 1 Video Multiplexer DATA SHEET FEATURES DESCRIPTION • low power; 12 mA ON current at ±5 volts The GX4314L is a low power, wideband video multiplexer implemented in bipolar technology. This device is characterized by excellent differential gain and phase in the enabled state, very high off-isolation in the disabled state and a fully buffered, unilateral signal path. • low differential gain and phase • wide bandwidth; 100 MHz at -1 dB • ±4.5 to ±11 volt power supplies • available in 14 pin PDIP as well as 14 and 16 pin SOIC packaging • identical functions and pin outs to GX4314 with lower power Logic inputs are TTL and 5 V CMOS compatible, providing address and chip select functions. The operation of the device is described in the Truth Table below. FUNCTIONAL BLOCK DIAGRAM The GX4314L offers pin for pin compatibility with Gennum's other 4x1 multipliers such as GX414, GX414A and GX434 with greatly improved bandwidth and slew rate. Since the GX4314L is capable of operation at ± 5 V supplies, system power can be reduced. X IN 0 IN 1 Make-before-break switching assures virtually glitch-free switching. The GX4314L features a very high, nearly constant input impedance coupled with high output impedance in the disabled state. This allows multiple devices to be paralleled at the inputs and outputs without additional circuitry. X X IN 2 X OUTPUT X IN 3 Typically, the ON current is only 12 mA while the chip disabled current drops to less than 260 µA. This feature allows the use of many devices in high density situations without excessive power dissipation. APPLICATIONS CHIP SELECT 2 TO 4 DECODER LOGIC • Multimedia • Computer graphics. • Very high density video switching. A0 A1 CS TRUTH TABLE • PCM / data routing. ORDERING INFORMATION CS A1 A0 Output Part Number Package Type Temperature Range 0 0 0 Input 0 GX4314LCDB 14 pin PDIP 0oC to 70oC 0 0 1 Input 1 GX4314LCKB 14 pin SOIC 0oC to 70oC 0 1 0 Input 2 GX4314LCKC 16 pin SOIC 0oC to 70oC 0 1 1 Input 3 1 X X High - Z GX4314LCTC Tape16 pin SOIC 0oC to 70oC X = don't care Revision Date: February 1994 Document No. 520 - 54 - 2 GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946 Gennum Japan Corporation:C-101 Miyamae Village, 2-10-42 Miyamae, Suginami-ku Tokyo 168-0081, Japan tel. (03) 3334-7700 fax: (03) 3247-8939 ABSOLUTE MAXIMUM RATINGS PIN CONNECTIONS Parameter ± 13.5V Supply Voltage -65°C ≤ TS ≤ 150° C Storage Temperature Range Lead Temperature (Soldering, 10 Sec) Analog Input Voltage NC IN 1 A1 IN 1 A0 GND CS GND A1 IN 2 CS OUT GND NC GND IN 3 VEE IN 3 NC NC VEE 14 PIN DIP & 14 PIN NARROW SOIC OUT 16 PIN WIDE SOIC VS = ± 8 V DC, 0°C ≤ T A ≤ 70°C, RL = 10kΩ, C L = 30 pF, unless otherwise shown Supply Voltage SYMBOL MIN TYP MAX ± 4.5 - ± 11 CS = 0 - 12 15 mA I- CS = 0 - 12 15 mA I+ CS = 1 - 270 350 µA - CS = 1 - 350 600 µA -2.4 - +3.6 V - 5 - µA -10 -3 +4 mV - 15 60 µV/°C - 350 500 ns 0.6 1.0 - µs 2.0 - - 0.8 V V - - 4 µA 0.035 0.047 0.060 dB - 200 - MHz At -1 dB flattened, RS = 27Ω 100 - - MHz ± VS I Supply Current I + CONDITIONS Operating Range Analog Output Voltage Swing VOUT Analog Input Bias Current I BIAS Output Offset Voltage V OS Output Offset Voltage Drift ∆V OS Chip Enable Time t ON Enable input to appearance of signal Chip Disable Time t OFF Logic Input Thresholds V IH V IL Enable input to disappearance of signal at output. V IH = 1 V IL = 0 Logic Input Current IL Insertion Loss I.L. 1V p-p sine or sq. wave at 100 kHz Bandwidth (-3dB) B.W. Small signal C L = 0 pF Frequency Response Extremes before clipping occurs TA = 25°C UNITS V Input Resistance RIN Chip enabled 1.0 - - MΩ Input Capacitance CIN Chip enabled - 1.5 - pF Output Resistance R OUT Chip enabled - 18 - Ω Output Capacitance COUT Chip enabled - - 5 pF Differential Gain dg At 3.58 MHz - - 0.03 % Differential Phase dp At 3.58 MHz - - 0.02 deg All Hostile Crosstalk XTLK AH 30 MHz R IN = 10Ω 70 - - dB Chip Disabled Crosstalk XTLK CD At 100 MHz - 80 - dB Slew Rate +SR V IN = 1V p-p (CL = 10 pF) 600 900 - V/µs -SR V IN =1V p-p (CL = 10 pF) 225 300 - V/µs ␣ DYNAMIC Gain Spread at 30 MHz Crosspoint Scatter 520 - 54 - 2 GND -0.5V ≤ VL ≤ +5.5V PARAMETER ␣ VCC GND (VEE - 1.4) or -7.5<VA< (Vcc+ 0.3) or ( VEE+ 15) V ELECTRICAL CHARACTERISTICS LOGIC IN 0 A0 IN 2 260° C Logic Input Voltage STATIC IN 0 VCC 0°C ≤ TA ≤ 70° C Operating Temperature Range DC ␣ SUPPLY GX4314L Value ∆AV - - ± 0.05 dB R S = 75 Ω o TA = 25 C - - ± 0.15 deg ƒ = 3.58 MHz 0 oC< TA< 70oC - - ± 0.25 deg 2 TYPICAL PERFORMANCE CURVES FOR GX4314L (V S = ± 5V DC, T A ≤ 25°C, CL = 30 pF, unless otherwise shown.) 0.2 -20 R =27Ω S C =30pF 0.1 -0.1 GAIN (dB) -40 ISOLATION & XTALK (dB) L 0.0 -0.2 -0.3 -0.4 -0.5 -0.6 RIN=10Ω -60 RIN=75Ω -80 CHIP OFF ISOLATION RL=10Ω -100 -0.7 -0.8 -120 1 10 1 80 10 Fig. 1 Flattened Frequency Response Fig. 2 All Hostile Crosstalk & Isolation 2.0 4.5 1.9 4.4 4.3 1.7 CAPACITANCE (pF) CAPACITANCE (pF) 1.8 1.6 DISABLED 1.5 1.4 ENABLED 1.3 1.2 C =0pF L 1.1 4.2 4.1 V =± 4.5V S 4.0 3.9 3.8 V =± 11.5V S 3.7 3.6 1.0 3.5 1 10 100 200 -1.0 -0.8 -0.6 -0.4 FREQUENCY (MHz) -0.2 0.0 0.2 0.4 0.6 0.8 Fig. 4 Output Capacitance 1 0.025 75 0.020 +5V GX4314 L VIDEO IN 0 0.030 14 2 0.1 +8V 13 A0 3 12 A1 4 11 CS 0.1 VIDEO IN 1 dg 0.015 75 0.010 VIDEO IN 2 0.005 5 75 0.000 1.0 BIAS VOLTAGE (V) Fig. 3 Input Capacitance dg ( % ), dp ( deg ) 100 FREQUENCY (MHz) FREQUENCY (MHz) 4 10 6 9 dp 1 CLC110 8 5 10k NC VIDEO OUT VIDEO IN 3 -0.005 7 8 -0.010 1 3 5 0.1 75 10 FREQUENCY (MHz) -8V Fig. 5 Differential Gain & Phase 0.1 -5V All resistors in ohms. all capacitors in microfarads unless otherwise stated. Fig. 6 Test Circuit 3 520 - 54 - 2 GX4314L SWITCHES VIDEO INPUTS 0.1 1 IN 0 V0 2 3 4 5 6 7 V1 V2 V3 75 GND IN 1 GND IN 2 GND IN 3 BINARY ADDRESS DECODER +5V +V 14 13 A0 A 1 12 CS 11 10 OUT 9 NC -V 8 A0 A1 4 0.1 75 75 75 0.1 -5V 5 +5V 6 3 A2 2 1 2 74HC139 A3 1 ENABLE 7 1 2 3 4 5 6 7 V4 V5 V6 V7 75 GND IN 2 GND IN 3 +V 14 A 0 13 A 1 12 11 CS 10 OUT NC 9 -V 8 -5V V9 V 10 V 11 75 IN 1 GND IN 2 GND IN 3 +5V 3 14 +V 13 A0 A 1 12 CS OUT NC -V 100 11 10 9 8 2 0.1 + 7 - 4 6 VIDEO 75 OUTPUT 250 300 500 0.1 0.1 75 75 IN 0 GND 2-10pF +5V 0.1 1 2 3 4 5 6 7 +5V 0.1 330 75 V8 16 8 0.1 75 75 IN 0 GND IN 1 -5V 75 0.1 -5V CURRENT- FEEDBACK +5V OPAMP 1 14 IN 0 +V 13 2 GND A 0 12 3 A1 IN 1 4 GND 11 CS 10 5 IN 2 OUT 9 6 GND NC 8 7 -V IN 3 V 12 V 13 V 14 V 15 0.1 75 75 75 75 All resistors in ohms. all capacitors in microfarads unless otherwise stated. -5V Fig. 7 16 x 1 Video Multiplexer Circuit 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. CAUTION ELECTROSTATIC SENSITIVE DEVICES 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. DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION 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 June 1992 Gennum Corporation. All rights reserved. Printed in Canada. 520 - 54 - 2 4