yy SGS-THOMSON MICROELECTRONICS M3494 CMOS 16 X 8 CROSSPOINT WITH CONTROL MEMORY a LOW ON RESISTANCE (typ. 60 Q at Vpp = 10 V) a INTERNAL CONTROL LATCHES a ANALOG SIGNAL SWING CAPABILITY EQUAL TO POWER SUPPLY VOLTAGE APPLIED a LESS THAN 1 % TOTAL DISTORT. AT 0 dBm = LESS THAN 95 dB CROSS-TALK AT 1 KHz 1 Vpp a VERY LOW POWER CONSUMPTION DESCRIPTION The M3494 contains a 16 x 8 array of crosspoint to- gether with a 7 to 128 line decoder and latch circuits. Anyone of the 128 switches can be addressed by se- lecting the appropriate 7 input bits. The selected switch can be turned on or off by applying a logical one or zero to the data in and the strobe input at lo- gical one. A reset signal can be used to turn off all the switches together when is set at logical one. The input pin Ve shifts the logic level of the digital in- puts. It allows one M3494 supplied between Vas and Vpp to have input logic levels equal to Ve and Vpp. ORDERING NUMBER : M3494 B1 M3494 can handle analog signals with an amplitude equal to the voltage power supply. The C/S allows the control inputs of different devices to be connected in parallel in multiple chip system. Each device is selected when its own C/S input pin is high level. M3494 is available in 40 lead dual in-line plastic. BLOCK DIAGRAM STROBE OATAIN RESET 3 need OOODOUUD aooOoOoooO aoooooo OOOoOoOOOCKH OoOoOoOooO0 Qoo0g000 |_ o- noOoooooOn | Flo qgooooocor |. i, J8) 1.) qon0o0000g) i: alot} 13) GOOOODOO 2 elo | 8 4 noOooeoOon zo] 2 coo ooooo o-4 mooOonoOoOoOG EO ee ja|_ | BOCOOOOo cs oO S-986411 Y INPUTS (120-7) October 1993 wt we 7929237 0063523 84T = 191M3494 PIN CONNECTION (top view) 4a 0 upp 3919 v2 36 1) pata a7 y1 36D cvs 35 0 va 34 0 NC 33 0 xa 3217 x1 3117 x2 381 x3 29) x4 28 1 xD 271 x12 26 [J x13 ve 25 av1 ye 2411 ave STROBE (] 18 23 1 ax2 ys q 22 0 axis usa 21 v4 y3 ay2 RESET aAx3 C axe CT x14 0 K15 x6 O x? 0 x8 x9 O x16 0 x11 Nc vq WON AM eBWNe Bp Oo PPP Pee NOM mR WN Noe QO w AMBSHZ4GL-BS INPUT/OUTPUT DESCRIPTION vo | Symbol | POWER Pin Description | Vpp 40 Positive Power Supply Vss 20 Negative Power Supply Ve 16 Digital Signal Ground ADDRESS AX0-AX3 4, 5, 22, 23 X Address Lines. These 4 pins are used to select one of the 16 rows of switches. Refer to the truth table for legal address. AYO-AY2 2, 24, 25 Y Address Lines. These 3 pins are used to select one of the 8 columns of switches. Refer to the truth table for legal address. CONTROL DATA 38 This input determines if the selected switch will be turned on (closed) or off (opened). If the pin is held high, the selected switch will be closed. If the pin is held low, the switch will be opened, STROBE This pin enables whatever action is selected by the ADDRESS and DATA pins. When the STROBE pin is held low, no switch openings or closings take place. When the STROBE pin is held high, the switch addressed by the select lines will be opened or closed (depending upon the state of the DATA pin) RESET Master Reset. This pin turns off (opens) all 128 switches. The states of the above control lines are irreleant. This pin is active high. cis 36 Chip Select. This pin allow the input control lines of different M3494s to be connected in parallel in multiple chip system. This pin is active high. Each device is selected by its own C/S input pin. DATA vO X0-X11 6-13, 26-33 Analog Input/Outputs. These pins are connected to the YO-Y7 pins in according to the truth table. ie) YO-Y7 1,15,17,19,21 35,37,39 Analog Input/Outputs. These pins are connected to the X0-X15 pins in according to the truth table. ait Sa SGS-THOMSON 192 MICROELECTRONICS Me 7929237 0063524 766M3494 TRUTH TABLE Address Connections AXO AX1 AX2 AX3 AYO AY1 AY2 0 0 0 0 0 0 0 X0<0> -<0>Y0 1 0 0 0 0 0 0 X1<0> -<0>Y0 0 1 0 0 0 0 0 X2 <0>-<0>Y0 1 1 0 0 0 0 0 X3 <0>-<0>Y0 0 0 1 0 0 0 0 X4 <0>-<0>Y0 1 0 1 0 0 0 0 X5 <0>-<0>Y0 0 1 1 0 0 0 0 X12 -<0>Y0 1 1 1 0 0 0 0 X13 -<0>Y0 0 0 0 1 0 0 0 X6 <0>-<0>Y0 1 0 0 4 0 0 0 X7 <0>-<0>Y0 0 1 0 1 0 0 0 X8 <0>-<0>Y0 1 1 0 1 QO 0 0 X9<0> -<0>Y0 0 0 1 1 0 0 0 X10 -<0>Y0O 1 0 1 1 0 0 0 X11 -<0>YO 0 1 1 1 0 0 0 X14 -<0>Y0O 1 1 1 1 0 0 0 X15 -<0>YO 0 0 0 0 1 0 0 X0 - Y1 L + J L L L L 4 <0>4 1 1 1 1 1 0 0 X15- Y1 0 0 0 0 0 1 0 X0 - Y2 L tL J L L L L J 1 1 1 1 0 1 0 X15 - Y2 0 0O 0 0 1 1 0 XO - 3 L J L 1 L JL L L 1 1 1 1 1 1 0 X15 - 3 0 0 0 0 0 0 1 XO - 4 L 1 L L L J d 4 1 1 4 4 0 0 1 X15 - 4 0 0 0 0 1 0 1 XO - 5 L 4 L + L L L Lot 1 1 1 1 i 0 1 X15 - Y5 0 0 0 0 0 1 1 X0 - Y6 J L L 4 L L L LJ 1 1 1 1 0 1 1 X15 - Y6 0 0 0 0 1 1 1 XO - Y7 L L + 4 JL L L + 1 1 1 1 1 1 1 X15 - Y7 ABSOLUTE MAXIMUM RATINGS Value Vop BC Vv 0.5 to 14 Ve - 0.5 to Vpp + 0.5 1 Ti T 0 to 70 C T T 50 to 125 C Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This ts a stress rating only and functional operation of the device at these or any other conditions in excess of those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS Symbol Parameter , Value Unit Vop Supply Voltages Vq = 0+5410% Vv VeB -5+10% Vv Top Operating Temperature 0, + 70 C Vin (logic signa) Ve, Von | 3/17 7 SGS-THOMSON SZ inickosuecrnomes MB 7929237 0063525 ble _M3494 STATIC ELECTRICAL CHARACTERISTICS (Tam = 0 to 70C, Vpp = +5V, Va = OV, Ves = -5V un- less otherwise specified Symbol Parameter Test Conditions Min. | Typ. | Max. | Unit Is Supply Current Reset = Vop 1 mA CROSSPOINT On Resistance Vioc = 0.75V, Vonc = 0.5V, See Figure 1 60 | 100 Q On Resistance Variation . 6 10 Qa Off-leakage * All switches off Vos = Vis = Ves to Vpp +3 | pA CONTROLS Vit 0.8 Vv Vin 2.4 Vv Input Leakage * Vin = Va to Vop +3 | pA * The device is guaranteed with such limits up to 70C. At 25C these limits become + 100nA. DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25C, CL = 50pF all input square wave rise and fall times = 10ns, Vpp = 10V) i Symbol | Parameter | Test Conditions [ Min. | Typ. | Max. | Unit | Fig. CROSSPOINT teuL, | Propagation Delay Time (switch on) Ri = 1kQ 30 | 100 | ns | 2 tein | Signal Input to Output Frequency Response (any switch on) Ri = 919, Vis = 2Vpp, CL = 3pF 50 MHz 20 log (Vos/Vis) = -3dB Sine Wave Distortion f, = 1kHz, Ri = 0.6kQ, Vis = 8Vpp 1 % Feedthrough (any switches off) f, = 10kHz, Ri = 1kQ, Vig = 2Vpp | -80 dB; 3 Frequency for Signal Crosstalk Vis = 1Vep 4 Attenuation of 40dB 1 MHz Attenuation of 110dB 5 kHz c Capacitance pF Xn to Ves 15 Yn to Ves fi = 1MHz, Vis = 0.1Vpp 15 Feedthrough 0.4 Cc Capacitance Logic Input to Va f, = 1MHz, Vis = 0.1Vep 5 pF CONTROLS (t, te = 10ns) (Vpp = +5V, Ve = OV, Vas = -5V) tpsn | Propagation Delay Time Strobe to Ru = 1kQ, C. = 50pF 150 | 200; ns | 5 Output (switch turn-on to high level) tezH | Data-in to Output (turn-on to high level) 150 | 200 | ns | 6 tran | Address to Output (turn-on to high level) 150 | 200 | ns | 7 tpsr | Propagation Delay Time Strobe to 150 | 200] ns | 5 Output (switch turn-off) tpz.__| Data-in to Output (turn-on to low level) 150 | 200 | ns | 6 tear _| Address to Output (turn-off) 160 | 200 | ns | 7 ts Set-up Time Data-in to Strobe or C/S 40 ns 5 tH Hold Time Data-in to Strobe or C/S 120 ns . 0 to Switching Frequency 1 MHz tw Strobe Pulse Width C/S Pulse Width 100 ns | 10 twr__| Reset Pulse Width 150 ns | 9 tpuz | Reset Tum-off to Output Delay 150 | 200; ns | 9 tas Address Set-up Time Address to 120 ns | 10 Strobe or C/S taH | Address Hold Time Address to Strobe 120 ns | 10 or C/S Control Crosstalk Data-in, Address or Square wave input, Vin = 3V, 75 mv | 8 Strobe to Output Ri = 10kQ 4/11 i777 SGS-THOMSON Jf, SES OS ON 194 me 79292 3? 0063526 559M3494 TEST CIRCUITS Figure 1 : RON Measurement. Figure 2 : Propagation Delay Time and Waveforms (signal input to signal out- put switch ON). lon ON __ mA Vis Vos ANY ; SWITCH SW ON + | | | + 50 pF 0.75V OSV T AV=0.25V 1 Kn Vg VG AY SWEANY CROSSPOINT 0780 . a 5.1 ON? lon S-9853/1 STROBE=DATA-IN=Vpp Vg Figure 3 : Off Isolation Measurement (Feed through ). Fany mOFF" TCH von (RMS) Yos Mm 7929237? 0063527 495 a v v G lo=20 LOG (ee B i $~9856 $-9855 5/11 ST SGS-THOMSON [. maicnoatacrnenies 195M3494 Figure 4 : Crosstalk Measurements. SAME INTEGRATED CIRCUIT a v --- --- v 1S (RMS) anveons | cas oTHens _ (RMS) Yos SWITCH NSWITCH | Looe - Son 1K. 0.72(RMS) KHz CT=20 LOG ct we) -9858 Figure 5 : Propagation Delay Time and Waveforms (strobe to signal output switch Turn-ON or Turn-OFF). STROBE Yo DATA IN STROBE Yoo Yoo 1 OATA IN Sy Yo "e sw is ina SOpF Yos SWaANY CROSSPOINT YG Yop 50"fe its {ta tpse SO% 7? tesn NN 10TH Figure 6 : Propagation Delay Time and Waveforms (data-in signal output, switch Turn-ON to high or low level). DATA IN Yoo op Yoo Yoo DATA IN 50% Kn DATA IN / 50%. Yos G YG e sw tory | Vis sw tos teze ee SOpF SOpF wo Yop L, s Yoo s0% v Yos SWe ANY CROSSPOINT, VG Os STROBE =Vpp Yaa _ % Yes +e 6/11 E77 SGS-THOMSON TH imenceisciromes 196 Me 7929237 0063528 32]M3494 Figure 7 : Propagation Delay Time and Waveforms (address to signal output switch Turn-ON or Turn-OFF). You ADORESS 50% y | 50% 50% %6 | ADORESS=0 ADDRESS=1 , Yop i Yoo i oD Uy tl DATA IN Sf {| sw Vos! sw Yos2 o Ys s tpag tPan KA SOpF KA SOpF Yop wo SWCANY CROSSPONT v os! y STROBE =og Vg S Yee } 0% tPaN el tezn Yoo Yos2 Yes tong wo Figure 8 : Waveforms for Crosstalk (control input to signal output). CONTROLS 1 x CONTROL Vis Vos Vg aened | Sw 50mv KN 10K M Vos VG -p_+}- -50mv Vg Vg S~9862 $-9861/1 SW=ANY CROSSPOINT 71 KYL, SEScTOMSON Mm 7929237 0063529 268 me nlM3494 Figure 9 : Propagation Delay Time and Waveforms (reset to output delay). Yoo DATA IN OATA IN _/ __V, Yop ? G y, Yos 9, wt sw OS fw) t ma RESET RESET SW= ANY CROSSPOINT STROBE =Vpp $-10784 Figure 10 : Propagation Delay Time and Waveforms (Strobe and C/S to signal output switch). tw STROBE 50% sot cis 50% 50% BE DATAIN : STRO O ATA tast Ltak tas} tad 1 i DATA 1 tS tH 1 ts ty Ys" Yoo ote oS tH t 1 1 1 tPZA 57 9 -10785 Vg fm - 30% f= ~ 90%, SWITCH 1K age, | SWITCH UX 10% S-S89i1 S-9850/9 C/S = Vop STROBE = Vop 8/11 7 SGS-THOMSON Y, P. MICROSC Anes 198 Mm 7929237 0063530 TatFigure 11 : Typical Ron versus Vs. M3494 Ron (ohm) oo 90 60 . Vdd=10 70 Vddet2V 60 - 50 Ta=25C 40 a 1 2 3 4 5 6 7 8 9 Vis (Vv) M89M3494-07 Figure 12 : Peak to Peak Voltage Capability versus Total Harmonic Distortion. 14 Vac (Vpp) wl . Vdd=12V . : aaa Vad-10 8 - . . 6 - . fiKHz Rload=-G00ohm 4 06 0.7 0.9 11 13 15 17 19 THD (%) MBSM3494-08 Figure 13 : Vams Capability versus Vpp. Vrms 8 BS 9 a5 o ms VDD (Vv) 1.5 12 MBSM32494-09 o/t4 AIZ, SScTHOMON Me 7929e37? 0063531 Jib mm 199M3494 TYPICAL APPLICATIONS The figures 14, 15 and 16 show the system configuration for expanded matrices (16 x 16, 8 x 64, 32 x 32). Figure 14 : (16 x 16 non blocking matrix). M3494 16 M3434 NBBNFEAG4-BE Figure 15 : (8 x 64 matrix). 6 M3494 M3494 | 2% MGANI494-B2 Figure 16 : (32 x 32 non blocking matrix). n3494t -im3aga 8 18, nga94tLJ tT n34g4|t & 18, naaaab, bImgagal, & Lim3494h, 'In3494 B, NOGNZ494-8F 10/11 200 477 SES;THOMSON Me 7929237 0063532 5eM3494 The availability of the C/S input in addition of the Fig. 17 shows an example, the selection circuit for STROBE input aids the addressing circuit for expan- a matrix with 4 x M3494 that implement this function ded matrices. with only one extenal inverter. Figure 17. M3494 M3494 M3494 M3494 C/S STROBE c/s STROBE c/s STROBE C/S STROBE os [ ] Kol | STROBE1 STROBE? NEGNBAGA-BA Note : The Reset, Data and Address inputs are connected in parallel. G7 S&S;THOMsoN wn MIGROELECTROMES MB 79259237 0063533 799 201