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eroflex circuit t echnology ? multiplexer modules for the future ? scd8502 rev 2 12/2/99 features n radiation environment ? radiation 300k(si) total dose ? no latch-up or see to 120mev/cm 2 /mg n full military temperature range n low power consumption < 90mw n 48 channels provided by six (6) hs-1840rh multiplexers n one address bus (a 0-3 ) and three enable lines n all channel inputs protected by 20v transorbs n fast access time 1500ns n 35v input over voltage protection (power on or off) n break-before-make switching n high analog input impedance (power on or off) n dielectrically isolated device islands n no latch-up n packaging ? hermetic ceramic quad flat pack / non-hermetic cob ? 96 leads, 1.32"sq x .20"ht quad flat pack (preliminary) ? 96 leads, chip on board (cob) general description aeroflex?s act8502 is a radiation hardened, multi-chip 48 channel multiplexer mcm (multi-chip module) with esd protection for use in space applications. it is designed to provide a high input impedance to the analog source power on or off, or the analog signal voltage inadvertently exceeds the supply rails during powered operation. all channel inputs have electrostatic discharge protection. the act8502 has been specifically designed to meet exposure to radiation environments. it is available in a 96 lead high temperature co-fired ceramic (htcc) quad flatpack (qfp) or as a plastic encapsulated chip-on-board (cob) flatpack. it is guaranteed operational from -55c to +125c. available screened in accordance with mil-prf-38534, the act8502 is ideal for demanding military and space applications. f i e i d c e r t a e r o f l e x l a b s i n c . iso 9001 circuit technology www.aeroflex.com act8502 48-channel analog multiplexer module radiation hardened & esd protected advanced
aeroflex circuit technology 2 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 a c t 8 5 0 2 4 8 c h a n n e l a n a l o g m u x b l o c k d i a g r a m c h 0 c h 1 5 ? ? ? e n 0 - 1 5 c h 1 6 c h 3 1 ? ? ? e n 1 6 - 3 1 c u r r e n t 1 6 - 3 1 a 0 a 1 a 2 a 3 o u t p u t 3 2 - 4 7 c u r r e n t 3 2 - 4 7 o u t p u t 1 6 - 3 1 c u r r e n t 0 - 1 5 c h 3 2 c h 4 7 ? ? ? e n 3 2 - 4 7 m u x 3 m u x 5 m u x 6 m u x 4 1 6 1 6 1 6 1 6 1 6 1 6 1 6 v r v r v r + v c c - v e e v r e f g n d 1 6 1 6 o u t p u t 0 - 1 5 m u x 2 m u x 1
aeroflex circuit technology 3 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 organization and application the act8502 consists of six 16 channel muxes arranged as shown in the block diagram. the address bus and three enable lines providing the following organization and capability. 48 channels addressable by bus a 0 ~a 3 , in three 16 channel blocks, each block enabled separately. each block connects the addressed channel to two outputs, "output" and "current". this technique enables selecting and reading a remote resistive sensor without the mux resistance being part of the measurement. for grounded sensors, this is done by passing current to the sensor by means of the "current" pin and reading the resultant voltage (proportional to the sensor resistance) at the "output" pin. note: it is recommended that all "nc or "no connect pin", be grounded. this eliminates or minimizes any esd or static buildup.
aeroflex circuit technology 4 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 absolute maximum ratings 1 / parameter range units case operating temperature range -55 to +125 c storage temperature range -55 to +150 c supply voltage +v c c (pin 44) -v e e (pin 46) v r e f (pin 48) +20 -20 +20 v v v digital input overvoltage v e n (pins 5, 91, 92), v a (pins 1, 3, 95, 93) < v r +4 > gnd -4 v v analog input over voltage v s 18 v notes: 1 / all measurements are made with respect to ground. notice: stresses above those listed under "absolute maximums rating" may cause permanent damage to the device. these are stress rating only; functional operation beyond the "operation conditions" is not recommended and extended exposure beyond the "operati on conditions" may effect device reliability. recommended operating conditions symbol parameter typical units +v c c +15v power supply voltage +15.0 v -v e e -15v power supply voltage -15.0 v v r e f reference voltage +5.00 v v a l logic low level +0.8 v v a h logic high level +4.0 v dc electrical performance characteristics 1 / (tc = -55c to +125c, +v c c = +15v, -v e e = -15v, v r e f = +5.0v, unless otherwise specified) parameter symbol conditions min max units supply current i + v e n (0-47) = v a (0-3) = 0 0.3 3 ma i - v e n (0-47) = v a (0-3) = 0 -3 -0.3 ma +i s b y v e n (0-47) = 4v, v a (0-3) = 0 6 / 0.3 3 ma -i s b y v e n (0-47) = 4v, v a (0-3) = 0 6 / -3 -0.3 ma address input current i a l (0-3) v a = 0v 1 / -6 6 m a i a h (0-3) v a = 4v 1 / -6 6 m a enable input current i e n l (0-15) v e n (0-15) = 0v -1 1 m a i e n h (0-15) v e n (0-15) = 4v -1 1 m a i e n l (16-31) v e n (16-31) = 0v -1 1 m a i e n h (16-31) v e n (16-31) = 4v -1 1 m a i e n l (32-47) v e n (32-47) = 0v -1 1 m a i e n h (32-47) v e n (32-47) = 4v -1 1 m a
aeroflex circuit technology 5 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 positive input leakage current ch0-ch47 +i s o f f o u t p u t ( a l l ) v i n = +10v, v e n = 4v, output and all unused mux inputs under test = -10v 2 /, 3 / -100 +700 na +i s o f f c u r r e n t ( a l l ) -100 +700 na negative input leakage current ch0-ch47 -i s o f f o u t p u t ( a l l ) v i n = -10v, v e n = 4v, output and all unused mux inputs under test = +10v 2 /, 3 / -100 +700 na -i s o f f c u r r e n t ( a l l ) -100 +700 na output leakage current outputs (pins 25, 70 & 68) currents (pins 67 & 69) +i d o f f o u t p u t ( a l l ) v o u t = +10v, v e n = 4v, output and all unused mux inputs under test = -10v 3 /, 4 / -100 +100 na +i d o f f c u r r e n t ( a l l ) -100 +100 na output leakage current outputs (pins 25, 70 & 68) currents (pins 67 & 69) -i d o f f o u t p u t ( a l l ) v o u t = -10v, v e n = 4v, output and all unused mux inputs under test = +10v 3 /, 4 / -100 +100 na -i d o f f c u r r e n t ( a l l ) -100 +100 na input clamped voltage ch0 - ch47 +v c l m p (0-47) v e n = 4v, all unused mux inputs under test are open. 3 / 18 23 v input clamped voltage ch0 - ch47 -v c l m p (0-47) -23 -18 v switch on resistance outputs (pins 25, 70 & 68) r d s ( o n ) (0-47) a v i n = +15v, v e n = 0.8v, i o u t = -1ma 2 /, 3 /, 5 / 500 3000 w r d s ( o n ) (0-47) b v i n = +5v, v e n = 0.8v, i o u t = -1ma 2 /, 3 /, 5 / 500 3000 w r d s ( o n ) (0-47) c v i n = -5v, v e n = 0.8v, i o u t = +1ma 2 /, 3 /, 5 / 500 3000 w switch on resistance currents (pins 26, 67 & 69) r d s ( o n ) (0-47) a v i n = +15v, v e n = 0.8v, i o u t = -1ma 2 /, 3 /, 5 / 500 3000 w r d s ( o n ) (0-47) b v i n = +5v, v e n = 0.8v, i o u t = -1ma 2 /, 3 /, 5 / 500 3000 w r d s ( o n ) (0-47) c v i n = -5v, v e n = 0.8v, i o u t = +1ma 2 /, 3 /, 5 / 500 3000 w notes: 1 / measure inputs sequentially. ground all unused inputs of the mux under test. va is the applied input voltage to the muxes? ad dress lines a(0-3). 2 / v i n is the applied input voltage to the muxes? input channel ch0-ch47. 3/ v e n is the applied input voltage to the muxes? enable line en(0-15), en(16-31) and en(32-47). 4 / v o u t is the applied input voltage to the muxes? output line output(0-15), output(16-31), output(32-47), current(0-15) , current(16-31) and current(32-47). 5 / negative current is the current flowing out of each of the mux pins. positive current is the current flowing into each mux pi n. 6 / if not tested, shall be guaranteed to the specified limits. switching characteristics (tc = -55c to +125c, v d d = +15v, v e e = -15v, v r = +5.0v, unless otherwise specified) parameter symbol conditions min max units switching test mux t o n a r l = 10k w, c l = 50pf 10 1500 ns t o f f a r l = 10k w, c l = 50pf 10 2000 ns t o n en r l = 1k w, c l = 50pf 10 1500 ns t o f f en r l = 1k w, c l = 50pf 10 1000 ns dc electrical performance characteristics 1 / (con?t) (tc = -55c to +125c, +v c c = +15v, -v e e = -15v, v r e f = +5.0v, unless otherwise specified) parameter symbol conditions min max units
aeroflex circuit technology 6 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 truth table (ch0 ? ch15) a3 a2 a1 a0 en(0-15) "on" channel 1 / x x x x h none l l l l l ch0 l l l h l ch1 l l h l l ch2 l l h h l ch3 l h l l l ch4 l h l h l ch5 l h h l l ch6 l h h h l ch7 h l l l l ch8 h l l h l ch9 h l h l l ch10 h l h h l ch11 h h l l l ch12 h h l h l ch13 h h h l l ch14 h h h h l ch15 1 / between ch0-15 and output (0-15) and current (0-15). truth table (ch16 ? ch31) a3 a2 a1 a0 en(16-31) "on" channel 1 / x x x x h none l l l l l ch16 l l l h l ch17 l l h l l ch18 l l h h l ch19 l h l l l ch20 l h l h l ch21 l h h l l ch22 l h h h l ch23 h l l l l ch24 h l l h l ch25 h l h l l ch26 h l h h l ch27 h h l l l ch28 h h l h l ch29 h h h l l ch30 h h h h l ch31 1 / between ch16-31 and output (16-31) and current (16-31).
aeroflex circuit technology 7 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 truth table (ch32 ? ch47) a3 a2 a1 a0 en(32-47) "on" channel 1 / x x x x h none l l l l l ch32 l l l h l ch33 l l h l l ch34 l l h h l ch35 l h l l l ch36 l h l h l ch37 l h h l l ch38 l h h h l ch39 h l l l l ch40 h l l h l ch41 h l h l l ch42 h l h h l ch43 h h l l l ch44 h h l h l ch45 h h h l l ch46 h h h h l ch47 1 / between ch32-47 and output (32-47) and current (32-47) and current (32-47).
aeroflex circuit technology 8 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 0.8v enable line 4v output t on en t off en definition of t o f f a t off a 0v output 0.8v 4v t on a definition of t o n a 0v 12v min output 0.8v 4v address lines definition of t o n e n and t o f f e n 0v address lines 50% 90% 10%
aeroflex circuit technology 9 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 lead numbers & functions act8502 ? 96 leads ceramic quad flat pack or cob pin # function pin # function pin # function 1 a 2 33 ch11 65 ch33 2 nc 34 nc 66 ch32 3 a 3 35 ch12 67 output i(32-47) 4 nc 36 nc 68 output v(32-47) 5 en 0-15 37 ch13 69 output i(16-31) 6 nc 38 nc 70 output v(16-31) 7 ch0 39 ch14 71 gnd 8 nc 40 nc 72 gnd 9 ch1 41 ch15 73 ch31 10 nc 42 nc 74 ch30 11 ch2 43 nc 75 ch29 12 nc 44 +v c c 76 ch28 13 ch3 45 nc 77 ch27 14 nc 46 -v e e 78 ch26 15 ch4 47 nc 79 ch25 16 nc 48 v r e f 80 ch24 17 ch5 49 nc 81 ch23 18 nc 50 case gnd 82 ch22 19 ch6 51 ch47 83 ch21 20 nc 52 ch46 84 ch20 21 ch7 53 ch45 85 ch19 22 nc 54 ch44 86 ch18 23 gnd 55 ch43 87 ch17 24 gnd 56 ch42 88 ch16 25 output v(0-15) 57 ch41 89 gnd 26 output i(0-15) 58 ch40 90 gnd 27 ch8 59 ch39 91 en 32-47 28 nc 60 ch38 92 en 16-31 29 ch9 61 ch37 93 a 0 30 nc 62 ch36 94 nc 31 ch10 63 ch35 95 a 1 32 nc 64 ch34 96 nc note: it is recommended that all "nc or "no connect pin", be grounded. this eliminates or minimizes any esd or static buildup.
aeroflex circuit technology 10 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 1.320 sq pin 85 pin 12 pin 60 pin 37 pin 13 pin 36 pin 61 pin 84 pin 1 flat package outline max
aeroflex circuit technology 11 scd8502 rev 2 12/2/99 plainview ny (516) 694-6700 circuit technology aeroflex circuit technology 35 south service road plainview new york 11803 telephone: (516) 694-6700 fax: (516) 694-6715 toll free inquiries: (800) the-1553 specifications subject to change without notice www.aeroflex.com/act1.htm e-mail: sales-act@aeroflex.com ordering information model number screening desc smd # package act8502 military temperature, -55c to +125c, screened in accordance with mil-prf-38534 - quad flat pack ACT8502-COB - quad cob flat pack

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