scd5921 rev b features ? single power supply operation at 3.3v to 5v ? radiation performance - total dose: >1mrad(si); dose rate = 50 - 300 rads(si)/s - eldrs immune - sel immune >100 mev-cm 2 /mg - neutron displacement damage >10 14 neutrons/cm 2 ? full military temperature range ? low power consumption when enabled ? cmos analog switching allows rail to rail operation and low switch impedance ? address bus (a 0-3 ), and one enable line ? high input impedance ? designed for aerospace and high reliability space applications ? packaging ? hermetic ceramic - 24-pin, 0.3"w x 0.6"l x 0.12"ht soic - typical weight 2 grams ? dscc smd 5962-10243 pending radhard-by-design general description aeroflex?s rhd5921 is a radiation hardened, single supply, 16 channel buffered output multiplexer in a 24-pin soic package. the rhd5921 design uses specif ic circuit topology and layout methods to mitigate total ionizing dose effects and single event latc hup. these characteristics make the rhd5921 especially suited for the harsh environment enco untered in deep space missions. it is guaranteed operational from -55c to +125c. available screen ed in accordance with mil-prf-38534 class k, the rhd5921 is ideal for demanding military and space applications. organization and application the rhd5921 is a 16 to 1 cmos bu ffered output voltage multiplexer. ch annel selection is controlled by 4 bit binary addressing and an active low enable. mult iplexed voltages are buffered by a unity gain cmos rail-to-rail amplifier. when the rhd5921 is disabled, the chip is put into a power-down state and the output is tri-stated. the devices will not latch with seu events to above 100 mev-cm 2 /mg. total dose degradation is minimal to above 1mrad(si). displacement damage environments to neutron fluence equivalents in the mid 10 14 neutrons per cm 2 range are readily tolerated. there is no sen sitivity to low-dose rate (eldrs) effects. seu effects are application dependant. standard products march 8, 2011 www.aeroflex.com/rhdseries rhd5921 analog voltage multiplexer advanced 16-channel, buffered
2 scd5921 rev b advanced 3/8/11 aeroflex plainview v cc ch7 ch6 ch5 ch4 ch3 ch2 ch1 ch0 en a0 a1 gnd a2 a3 ch8 ch9 ch10 ch11 ch12 ch13 ch14 ch15 v out 5921 ch15 ch0 ? ? ? en v out mux 16 a3 a2 a1 a0 rhd5921: 16 channel bu ffered analog mux 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 note: 1. package and lid are electr ically isolated from signal pads.
3 scd5921 rev b advanced 3/8/11 aeroflex plainview absolute maximum ratings parameter range units case operating temperature range -55 to +125 c storage temperature range -65 to +150 c supply voltage (+v cc ) +6.0 v digital input overvoltage (v en , v a ) < v cc +0.4 > gnd -0.4 v v analog input overvoltage (ch0-ch15) < v cc +0.4 > gnd -0.4 v notice: stresses above those listed under "a bsolute maximums rating" may cause perm anent damage to the device. these are stress rating only; functional operation beyond the "operat ion conditions" is not recommended and ex tended exposure beyond the "operation con ditions" may affect device reliability. recommended operating conditions symbol parameter typical units +v cc power supply voltage 3.3 to 5.0 v v en , v a logic low level 30% v cc v v en , v a logic high level 70% v cc v electrical perform ance characteristics (t c = -55c to +125c, +v cc = +5v -- u nless otherwise specified ) parameter symbol conditions min max units supply current (+v cc ) +i cc en = 30% v cc 0.5 2 ma +i sby en = 70% v cc 10 100 ? a address input current (a0-a3) i al v a = 30% v cc +25c -5 5 na +125c -50 50 na i ah v a = 70% v cc +25c -5 5 na +125c -50 50 na enable input current (en) i enl v en = 30% v cc +25c -5 5 na +125c -50 50 na i enh v en = 70% v cc +25c -5 5 na +125c -50 50 na input leakage current (ch0-ch15) +i inlk v in = +5v, v en =70% v cc , output and all unused mux inputs under test = 0v +25c -5 5 na +125c -50 50 na output leakage current (v out ) +i outlk tri-state, v en > 70% v cc +25c -5 5 na +125c -20 20 na
4 scd5921 rev b advanced 3/8/11 aeroflex plainview output on voltage v on 1v in = 5 volts, r l = 10k 4.9 5.1 v v on 2v in = 5 volts, r l = 1k 4.35 4.65 v v on 3v in = 3.3 volts, r l = 10k 3.2 3.4 v switching characteristics (t c = -55c to +125c, +v cc = +5v -- u nless otherwise specified ) parameter symbol conditions min max units address to output delay (on, off) t a hl f = 10khz, v in = 5 volts, r l = 10k 15us t a lh 1 5 us output slew rate t s 1.8 4 v/us enable to output delay t onen f = 10khz, v in = 5 volts, r l = 1k 0.8 2.5 us t offen 100 350 ns electrical performance ch aracteristics (continued) (t c = -55c to +125c, +v cc = +5v -- u nless otherwise specified ) parameter symbol conditions min max units truth table (ch0 ? ch15) a3 a2 a1 a0 en "on" channel 1 / xxxx h none llll l ch0 lllh 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 hlll 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 hhhh l ch15 1 / between (ch0-ch15) and v out
5 scd5921 rev b advanced 3/8/11 aeroflex plainview rhd5921 switching diagrams gnd gnd 50% v cc gnd 50% v cc v cc v cc address lines (a0 - a3) v out ( off ) v out ( on ) address lines (a0 - a3) gnd t s t a hl t s 90% 10% 50% v cc 50% v cc 50% gnd t off en t on en gnd v out (enable) en 10% 50% 90% t a lh
scd5921 rev b advanced 3/8/11 6 plainview, new york toll free: 800-the-1553 fax: 516-694-6715 se and mid-atlantic tel: 321-951-4164 fax: 321-951-4254 international tel: 805-778-9229 fax: 805-778-1980 west coast tel: 949-362-2260 fax: 949-362-2266 northeast tel: 603-888-3975 fax: 603-888-4585 central tel: 719-594-8017 fax: 719-594-8468 www.aeroflex.com info-ams@aeroflex.com aeroflex microelectronic solutions reserves the right to change at any time without notice the specifications, design, function, or form of its products described herein. all parameters must be validated for each customer's application by engineering. no liability is assumed as a result of use of this product. no patent licenses are implied. our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused export control: export warning: this product is controlled for expor t under the international traffic in arms regulations (itar). a license from the u.s. department of state is required prior to the export of this product from the united states. aeroflex?s military and space pr oducts are controlled for export under the international traffic in arms regulations (itar) and may not be sold or proposed or offered for sale to certain countries. (see itar 126.1 for complete information.) ordering information model dscc smd # screening package rhd5921-7 - commercial flow, +25c testing only 24-pin soic rhd5921-s - military temperature, -55c to +125c screened in accordance with mil-prf-38534, class k rhd5921-201-1s 5962-1024302kxc (pending) in accordance with dscc smd rhd5921-201-2s 5962-1024302kxa (pending) RHD5921-901-1S 5962h1024302kxc (pending) rhd5921-901-2s 5962h1024302kxa (pending) note: package and lid are electrically isolated from signal pads. package outline
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