1 ps8324 09/14/98 product description pericom semiconductors pi74vcx series of logic circuits is produced in the companys advanced 0.35 micron cmos technology, achieving industry leading speed. the buffer/driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. the device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. it provides true outputs and complementary active-low output-enable (oe and oe) inputs. to ensure the high-impedance state during power up or power down, oe should be tied to vcc through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. the pi74vcx family is i/o tolerant, allowing it to operate in 1.8/3.6v systems. 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 ? the pi74vcx family is designed for low voltage operation, v dd = 1.8v to 3.6v ? 3.6v tolerant inputs and outputs ? supports live insertion ? balanced drive, 24ma ? uses patented noise reduction circuitry ? typical v olp (output ground bounce) <0.6v at v dd = 2.5v, t a = 25oc ? typical v ohv (output v oh undershoot) < -0.6v at v dd = 2.5v, t a = 25oc ? power-off high impedance inputs and outputs ? industrial operation at ?40c to +85c ? packages available: ? 48-pin 240 mil wide plastic tssop (a) ? 48-pin 300 mil wide plastic ssop (v) pi74vcx16241 16-bit buffer/driver with 3-state outputs logic block diagram product features
2 ps8324 09/14/98 pi74vcx16241 16-bit buffer driver with 3-state outputs 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 s t u p n is t u p t u o e o 3 , e o 2a 3 , a 2y 3 , y 2 hh h hl l lx z s t u p n is t u p t u o e o 4 , e o 1a 4 , a 1y 4 , y 1 lh h ll l hx z 1 2 3 4 5 6 7 8 9 48 10 47 11 46 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 32 31 30 29 28 27 26 25 pin name description noe 3-state output enable inputs (active low) nax inputs nyx 3-state outputs gnd ground v cc power product pin description truth tables (1) notes: 1. h = high signal level l = low signal level x = dont care or irrelevant z = high impedance product pin configuration 1 oe 1 y 1 1 y 2 gnd 1 y 3 1 y 4 v cc 2 y 1 2 y 2 gnd 2 y 3 2 y 4 3 y 1 3 y 2 gnd 3 y 3 3 y 4 v cc 4 y 1 4 y 2 gnd 4 y 3 4 y 4 4 oe 2 oe 1 a 1 1 a 2 gnd 1 a 3 1 a 4 v cc 2 a 1 2 a 2 gnd 2 a 3 2 a 4 3 a 1 3 a 2 gnd 3 a 3 3 a 4 v cc 4 a 1 4 a 2 gnd 4 a 3 4 a 4 3 oe 48-pin a48 v48
3 ps8324 09/14/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74vcx16241 16-bit buffer driver with 3-state outputs 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 conditionsfor extended periods may affect reliability. supply voltage range, v dd ........................................... 0.5v to 4.6v input voltage range, v i ............................................... -0.5v to 4.6v output voltage range, v o (3-stated) ........................... -0.5v to 4.6v output voltage range, v o (1) (active) ..................... -0.5v to v cc +0.5 dc input diode current (i ik ) v i <0v ...................................... -50ma dc output diode current (i ok ) v o <0v .................................................................................. -50ma v o >v dd ............................................................................... +50ma dc output source/sink current (i oh /i ol ) .............................. 50ma dc v dd or gnd current per supply pin (i cc or gnd) ...... 100ma storage temperature range, t stg .............................. C65 c to 150 c recommended operating conditions (2) maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) notes 1. absolute maximum of i o must be observed. 2. unused control inputs must be held high or low to prevent them from floating. 3 as measured between 0.8v and 2.0v, v dd = 3.0v. . n i m. x a ms t i n u v d d e g a t l o v y l p p u s g n i t a r e p o8 . 16 . 3 v y l n o n o i t n e t e r a t a d2 . 16 . 3 v h i e g a t l o v t u p n i l e v e l - h g i hv d d v 6 . 3 o t v 7 . 2 =0 . 2 v l i e g a t l o v t u p n i l e v e l - w o lv d d v 6 . 3 o t v 7 . 2 =8 . 0 v i e g a t l o v t u p n i3 . 0 -6 . 3 v o e g a t l o v t u p t u o e t a t s e v i t c a0v d d e t a t s f f o06 . 3 i o i n i t n e r r u c t u p t u o h o i / l o v d d v 6 . 3 o t v 0 . 3 = v d d v 7 . 2 o t v 3 . 2 = v d d v 8 . 1 = 4 2 8 1 6 a m d / t d v e t a r l l a f r o e s i r n o i t s i s n a r t t u p n i ) 3 ( 00 1v / s n t a e r u t r e p m e t r i a - e e r f g n i t a r e p o - 0 4 5 8c
4 ps8324 09/14/98 pi74vcx16241 16-bit buffer driver with 3-state outputs 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) dc characteristics (2.7v 5 ps8324 09/14/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74vcx16241 16-bit buffer driver with 3-state outputs s r e t e m a r a ps n o i t i d n o cv d d . n i m. p y t. x a ms t i n u v h i e g a t l o v t u p n i l e v e l h g i h 3 . 2 - 8 . 1 x 7 . 0v d d v v l i e g a t l o v t u p n i l e v e l w o l v x 2 . 0 d d v h o e g a t l o v t u p t u o l e v e l h g i hi h o 0 0 1 - = m a 8 . 1 v d d 2 . 0 - i h o a m 6 - =4 . 1 v l o e g a t l o v t u p t u o l e v e l w o li l o 0 0 1 = m a2 . 0 i l o a m 6 =3 . 0 i i t n e r r u c e g a k a e l t u p n iv i v 8 . 1 = i v , v 0 . 0 =0 . 5 m a i z o e g a k a e l t u p t u o e t a t s - 3 0 v o v 6 . 3 v i v = h i v r o l i 0 1 i f f o e g a k a e l f f o - r e w o p t n e r r u c 0 v ( i v , o ) v 6 . 30 0 1 i d d t n e r r u c y l p p u s t n e c s e i u q v i v = d d d n g r o8 . 10 2 v d d v ( i v , o ) v 6 . 38 . 10 2 dc characteristics (2.3v v dd 2.7v) dc characteristics (1.8v v dd 2.3v) electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) (continued from previous page) s r e t e m a r a ps n o i t i d n o cv d d . n i m. p y t. x a ms t i n u v h i e g a t l o v t u p n i l e v e l h g i h 7 . 2 - 3 . 2 6 . 1 v v l i e g a t l o v t u p n i l e v e l w o l 7 . 0 v h o e g a t l o v t u p t u o l e v e l h g i h i h o 0 0 1 - = m av d d 2 . 0 - i h o a m 6 - = 3 . 2 0 . 2 i h o a m 2 1 - =8 . 1 i h o a m 8 1 - =7 . 1 v l o e g a t l o v t u p t u o l e v e l w o l i l o 0 0 1 = m a7 . 2 - 3 . 22 . 0 i l o a m 2 1 = 3 . 2 4 . 0 i l o a m 8 1 =6 . 0 i i t n e r r u c e g a k a e l t u p n iv i v , v 0 . 0 = i v 7 . 2 =7 . 20 . 5 m a i z o e g a k a e l t u p t u o e t a t s - 3 0 v o v 6 . 3 v i v = h i v r o l i 7 . 2 - 3 . 20 1 i f f o t n e r r u c e g a k a e l f f o - r e w o p0 v ( i v , o ) v 6 . 30 0 1 i d d t n e r r u c y l p p u s t n e c s e i u q v i v = d d d n g r o 7 . 2 - 3 . 2 0 2 v d d v ( i v , o ) v 6 . 30 2
6 ps8324 09/14/98 pi74vcx16241 16-bit buffer driver with 3-state outputs 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 ac electrical characteristics (1) notes 1. for cl = 50pf add approximatly 300ps to ac maximum specification 2. skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. the specification applies to any outputs switching in the same direction, either high or low (t oshl ) or low to high (t oslh ). capacitance dynamic switching characteristics l o b m y sr e t e m a r a p c , c 5 8 + o t c 0 4 - = a t l r , f p 0 3 = l 0 0 5 = w w w w w s t i n u v d d v 3 . 3 = v 3 . 0 v d d v 5 . 2 = v 2 . 0 v d d v 8 . 1 = . n i m. x a m. n i m. x a m. n i m. x a m t l h p t , h l p y a l e d p o r p8 . 05 . 20 . 10 . 35 . 10 . 5 s n t l z p t , h z p e m i t e l b a n e t u p t u o8 . 05 . 30 . 11 . 45 . 15 . 6 t z l p t , z h p e m i t e l b a s i d t u p t u o8 . 05 . 30 . 18 . 35 . 10 . 5 t l h s o t h l s o w e k s t u p t u o o t t u p t u o ) 2 ( 5 . 05 . 05 . 0 l o b m y sr e t e m a r a ps n o i t i d n o cv d d t a c 5 2 + = l a c i p y t s t i n u v p l o v k a e p c i m a n y d t u p t u o t e i u q l o c l v , f p 0 5 = h i v = d d v , l i v 0 = 8 . 1 5 . 2 3 . 3 5 2 . 0 6 . 0 8 . 0 v v v l o v y e l l a v c i m a n y d t u p t u o t e i u q l o c l v , f p 0 5 = h i v = d d v , l i v 0 = 8 . 1 5 . 2 3 . 3 5 2 . 0 - 6 . 0 - 8 . 0 - v v h o v y e l l a v c i m a n y d t u p t u o t e i u q h o c l v , f p 0 5 = h i v = d d v , l i v 0 = 8 . 1 5 . 2 3 . 3 5 . 1 9 . 1 2 . 2 l o b m y sr e t e m a r a ps n o i t i d n o c c o 5 2 + = a t l a c i p y t s t i n u c n i e c n a t i c a p a c t u p n i v d d , v 3 . 3 r o v 5 . 2 , v 8 . 1 = v 1 v r o v 0 = d d 6 f p c t u o e c n a t i c a p a c t u p t u o v 1 v r o v 0 = , d d v d d v 3 . 3 r o v 5 . 2 , v 8 . 1 = 7 c d p n o i t a p i s s i d r e w o p e c n a t i c a p a c v 1 v r o v 0 = , d d z h m 0 1 = f v d d v 3 . 3 r o v 5 . 2 , v 8 . 1 = 0 2
7 ps8324 09/14/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74vcx16241 16-bit buffer driver with 3-state outputs test circuits and switching waveforms parameter measurement information (v dd = 1.8v - 3.6v) setup, hold, and release timing pulse width switch position propagaton delay enable disable timing notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c. all input pulses are supplied by generators having the following characteristics: prr 10 mhz, z o = 50 w , t r 2ns, t f 2ns, measured from 10% to 90%, unless otherwise specified. d. the outputs are measured one at a time with one transition per measurement. pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com output control (active low) output waveform 2 s1 at gnd (see note b) t pzl t plz v dd 0v v dd v ol 0v output waveform 1 s1 at 2xv dd (see note b) +0.15v -0.15v v oh v dd t phz t pzh v dd/2 v dd/2 v dd /2 c l r 1 500 w 50pf from output under test gnd 2 x v dd open (see note a) r l 500 w 3 low-high-low pulse t w high-low-high pulse v dd 0v v dd 0v v dd/2 v dd/2 input opposite phase input transition t plh t phl t plh t phl v dd 0v v dd v ol v dd 0v output v dd/2 v dd/2 v dd/2 data input t h v dd t su 0v timing input v dd 0v v dd/2 v dd/2 t s e t1 s td pn e p o t/ z l ptl z px 2vd d t/ z h pth z pd n g
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