1 ps8490c 11/18/04 v cc ea 1 eb s 1 2 s 0 ia 3 3 ib 3 ia 2 4 ib 2 ia 1 5 16 ib 1 ia 0 6 15 ib 0 ya 7 14 yb 8 13 12 gnd 11 10 9 ea ia 0 ia 1 ia 2 ia 3 ib 0 ib 1 ib 2 ib 3 eb s 0 s 1 ya yb pi5c3253c 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012 12345678901 2 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 features ? near-zero propagation delay 4-ohm switches connect inputs to outputs direct bus connection when switches are on undershoot protection to ?2v (data inputs only) pin compatible with 74 series 253 logic devices packaging (pb-free & green available): ? 16-pin 173-mil wide plastic tssop (l) block diagram truth table (1) description pericom semiconductor?s pi5c3253c is a dual 4:1 multiplexer/ demultiplexer with three-state outputs that is pinout compatible with the pi74fct253t. inputs can be connected to outputs with low on- resistance (5-ohm) with no additional ground bounce noise or propagation delay. pin configuration pin description note: 1. h = high logic voltage level l = low logic voltage level hi-z = high impedance dual 4:1 mux/demux bus switch with ?2v undershoot protection e l b a n et c e l e sl e n n a h c n o i t c n u f a eb e1 s0 sa yb y hxxx z - i hx a e l b a s i d xhxx x z - i hb e l b a s i d llll 0 a i0 b i0 = 0 - 1 s lllh 1 a i1 b i1 = 0 - 1 s llhl 2 a i2 b i2 = 0 - 1 s llhh 3 a i3 b i2 = 0 - 1 s e m a n n i pn o i t p i r c s e d b e , a ee l b a n e 1 - 0 ss t u p n i t c e l e s n b 1 , n a 1s t u p n i a t a d b y , a ys t u p t u o a t a d c c vn i p y l p p u s r e w o p d n gd n u o r g
pi5c3253c dual 4:1 mux/demux bus switch with ?2v undershoot protection 2 ps8490c 11/17/04 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 storage temperature ........................................................... ?65c to +150c ambient temperature with power applied ............................. ?40c to +85c supply voltage to ground potential ... ...................................... ?0.5v to +7.0v dc input voltage ..................................................................... ?0.5v to +7.0v dc output current .............................................................................. 120ma power dissipation .. ................................................................................ 0.5w note: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 5v 5%) parameters description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed logic high level 2.0 v v il input low voltage guaranteed logic low level ?0.5 0.8 v i ih input high current v cc = max., v in = v cc 1 a i il input low current v cc = max., v in = gnd 1 a i ozh high impedance output current 0 i n , y n v cc 1 a v ik clamp diode voltage v cc = min., i in = ?18ma ?0.7 ?1.8 v v up undershoot protection voltage (3) max inputs, undershoot pulse duration <25ns ?2.0 v r on switch on resistance (4) v cc = min., v in = 0.0v, i on = 48ma 4 7 ohm v cc = min., v in = 2.4v, i on = 15ma 8 15 capacitance (t a = 25c, f = 1 mhz) parameters (5) description test conditions typ. max. units c in input capacitance v in = 0v 6 pf c off i a /i b capacitance, switch off v in = 0v 6 pf c on i a /i b capacitance, switch on v in = 0v 14 pf notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device type. 2. typical values are at v cc = 5.0v, t a = 25c ambient and maximum loading. 3. on 1an & 1bn (data inut) pins only. 4. measured by the voltage drop between i and y pin at indicated current through the switch. on resistance is determined by the lower of the voltages on the two (i,y) pins. 5. this parameter is determined by device characterization but is not production tested. maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.)
pi5c3253c dual 4:1 mux/demux bus switch with ?2v undershoot protection 3 ps8490c 11/17/04 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 s r e t e m a r a pn o i t p i r c s e ds n o i t i d n o c ) 1 ( c 3 5 2 3 c 5 i p s t i n u . m o c . n i m. x a m t y i y a l e d n o i t a g a p o r p ) 3 , 2 ( n y o t n i c l f p 0 5 = r l s m h o 0 0 5 = 5 2 . 0 s n t y s e m i t t c e l e s s u b n y o t n s 5 . 05 . 4 t h z p t l z p e m i t e l b a n e s u b n y o t n e 5 . 00 . 4 t z h p t z l p e m i t e l b a s i d s u b n y o t n e 5 . 05 . 4 power supply characteristics notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device. 2. typical values are at v cc = 5.0v, +25c ambient. 3. per ttl driven input (v in = 3.4v, control inputs only); i and y pins do not contribute to i cc . switching characteristics over operating range notes: 1. see test circuit and waveforms. 2. this parameter is guaranteed but not tested on propagation delays. 3. the bus switch contributes no propagational delay other than the rc delay of the on resistance of the switch and the load cap acitance. the time constant for the switch alone is of the order of 0.25ns for 50pf load. since this time constant is much smaller than the r ise/fall times of typical driving signals, it adds very little propagational delay to the system. propagational delay of the bus switch when use d in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. s r e t e m a r a pn o i t p i r c s e ds n o i t i d n o c t s e t ) 1 ( . n i mp y t ) 2 ( . x a ms t i n u i c c t n e r r u c y l p p u s r e w o p t n e c s e i u q v c c . x a m = v n i v r o d n g = c c ? ?? ?0 0 1a ? i c c h g i h l t t @ t u p n i r e p t n e r r u c y l p p u sv n i v 4 . 3 = ) 3 ( ? ?? ?5 . 2a m application information logic inputs logic control inputs can be driven up to +5.5v regardless of the supply voltage. for example, given a 5.0v supply, the control or select pins may be driven low to 0v and high to 5.5v. driving the control or select pins rail-torail ? minimizes power consumption. power -supply sequencing proper power-supply sequencing is recommended for all cmos devices. always apply v cc before applying signals to the input/output or control pins.
pi5c3253c dual 4:1 mux/demux bus switch with ?2v undershoot protection 4 ps8490c 11/17/04 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 .193 .201 .047 max. .002 .006 seating plane .0256 bsc .018 .030 .004 .008 .252 bsc 1 16 .169 .177 0.05 0.15 6.4 0.45 0.75 0.09 0.20 4.3 4.5 1.20 4.9 5.1 0.65 0.19 0.30 .007 .012 packaging mechanical: 16-pin tssop (l) pericom semiconductor corporation 1-800-435-2336 www.pericom.com notes: 1. thermal characteristics can be found on the company web site at www.pericom.com/packaging/ ordering information ordering code package code package type pi5c3253cl l 16-pin 150-mil wide plastic tssop PI5C3253CLE l pb-free & green, 16-pin 150-mil wide plastic tssop
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