0 0 0 in 0 on * * * 0 0 1 in 1 * on * * 0 1 0 in 2 * * on * 0 1 1 in 3 * * * on 1 x x hi - z * * * * ordering information part number package type temperature range gx4404-cdc 16 pin pdip 0 to 70 o c gx4404-ckd 16 pin (n) soic 0 to 70 o c GX4404-CTD tape16 pin (n) soic 0 to 70 o c tally o/ps
x x x x x a0 a1 chip select 2 to 4 decoder output in 0 in 1 in 2 in 3 tally outputs t 0t 1t 2t 3 cs features ? low differential phase and gain ? wide bandwidth, 200 mhz at -3 db ? small switching transient ? 4.5 to 5.5 volts supplies ? individual tally outputs 2- data sheet circuit description the gx4404 is a wideband video multiplexer implemented in bipolar technology. this device is characterized by excellent differential phase and gain in the enabled state, very high off-isolation in the disabled state. fully buffered unilateral signal paths ensure negligible output to input feedback, while delivering minimal output switching transients through make-before-break switching. for use in nxm routing matrices, these devices feature 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. the chip is disabled when a logic high is applied to the cs control pin. in this case, regardless of the address data, the output of the device assumes a high impedance state. individual pnp to v cc tally outputs provide positive indication of crosspoint selection. all logic inputs are ttl and 5v cmos compatible. supply voltages can be between 4.5 to 5.5 volts. applications ? hdtv ? very high quality video switching ? very high density video switching ? computer graphics ? pcm / data routing matrices * x = don't care = off (high impedance) cs a1 a0 out t0 t1 t2 t3 gx4404 wideband, monolithic 4x1 video multiplexer pin connections in 0 gnd in 1 t1 t2 in 2 gnd in 3 t0 v cc a0 a1 cs out v ee t3 16 pin narrow soic (& 16 pin pdip) truth table functional block diagram gennum corporation p.o. box 489, stn a, burlington, ontario, canada l7r 3y3 tel. (905) 632-2996 fax: (905) 632-5946 japan branch: a-302 miyamae village, 2-10-42 miyamae, suginami-ku, tokyo 168, japan tel. (03) 3334-7700 fax (03) 3247-8839 document no. 520 - 43 - 1 available packaging 16 pin pdip 16 pin soic tape 16 pin (n) soic
520 - 43 - 1 2 supply voltage v s operating range 4.5 - 5.5 v dc i + cs = 0 - 30 37 ma supply supply current i - cs = 0 - 30 37 ma i + cs = 1 - 220 300 m a i - cs = 1 - 220 380 m a analog output voltage swing v out extremes before clipping occurs -2.4 - 2.6 v static analog input bias current i bias -12- m a output offset voltage v os t a = 25 c -13 -4 7 mv output offset voltage drift d v os -3580 m v/ c chip enable time t on enable input to appearance of signal - 200 400 ns logic chip disable time t off enable input to disappearance 0.6 1.2 - m s of signal at output. logic input thresholds v ih 1 2.0 - - v v il 0 - - 0.8 v logic input current i l --4 m a tally outputs (v cc -v tally ) i tally = 1ma 70 150 300 mv insertion loss i.l. 1v p-p sine or sq. wave at 100 khz 0.030 0.040 0.055 db bandwidth (-3db) b.w. small signal c l = 0 pf - 300 - mhz input resistance r i n cs = 0, crosspoint on 0.5 - - m w dynamic input capacitance c in cs = 0, crosspoint on - 1.5 - pf output resistance r out cs = 0, crosspoint on - 4 - w output capacitance c out cs = 1, chip disabled - 3.7 - pf differential gain dg ? = 3.58 mhz, v in = 40 i re - - 0.05 % differential phase dp ? = 3.58 mhz, v in = 40 i re - - 0.04 deg all hostile crosstalk xtlk ah 1vp-p on 3 inputs 4 th input has 10 w resistor to gnd ?=30 mhz - 70 - db chip disabled crosstalk xtlk cd enabled device on o/p ?=100 mhz - 80 - db slew rate -sr v in = 3v p-p (c l = 0 pf) 250 - - v/ m s gain spread at 30 mhz d a v -- 0.05 db crosspoint scatter r s = 75 w t a = 25 c-- 0.15 deg ? = 3.58 mhz 0 c < t a < 70 c- - 0.25 deg electrical characteristics parameter symbol conditions min typ max units (v s = 5v dc, 0 c t a 70 c, r l = 10k w , c l = 30 pf, unless otherwise shown.) +sr v in = 3v p-p (c l = 0 pf) 250 - - v/ m s parameter value supply voltage 7.5v operating temperature range 0 c t a 70 c storage temperature range -65 c t s 150 c lead temperature (soldering, 10 sec) 260 c parameter value analog input voltage (v ee -1.4) < v a < (v cc +0.3)v logic input voltage -0.5v v l +5.5v tally output current 2 ma absolute maximum ratings
3 520 - 43 - 1 gx4404 75 video in 1 video in 3 75 1 2 4 3 0.1 address bit 1 chip select 6 db
amplifier to l.e.d.
drivers 6 5 7 15 14 -5v 9 8 10 12 13 +5v 0.1 11 address bit 0 video out video in 2 video in 0 16 75 75 75 x x x x 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 july 1991 gennum corporation. revision date: january 1993. all rights reserved. printed in canada. 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 gain (db) r s = 30 w c l = 27 pf fig. 1 flattened frequency response fig. 2 all hostile crosstalk & isolation 1 3 5 10 frequency (mhz) dg (%) dp (deg) capacitance (pf) dg dp c l = 0 pf sw1,2 enabled sw0,3 enabled 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 1 10 100 200 frequency (mhz) r s = 75 w r s = 10 w fig. 4 input capacitance fig. 3 differential gain & phase typical performance curves 1 10 30 100 frequency 10 30 100 300 frequency (mhz) db chip off - isolation -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 r l = 10 w 0.05 0.04 0.03 0.02 0.01 0 all resistors in ohms, all capacitors in m f unless otherwise stated caution electrostatic sensitive devices do not open packages or handle except at a static-free workstation fig. 5 test 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. 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. gx4404
pin 16 390 l.e.d. driver (repeat for each
tally output) 4.7k +5v
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