74LCX16374A low voltage 16-bit d-type flip flop 3-state with 5v tolerant inputs and outputs preliminary data november 1997 order codes : 74lcx16374t n 5v tolerant inputs and outputs n high speed: f max = 170 mhz (min.) at v cc =3v n power-down protection on inputs and outputs n symmetrical output impedance: |i oh |=i ol =24ma(min) n pci bus levels guaranteed at 24ma n balanced propagation delays: t plh @ t phl n operating voltage range: v cc (opr) = 2.0v to 3.6v (1.5v data retention) n pin and function compatible with 74 series 16374 n latch-up performance exceeds 500ma n esd performance: hbm >2000v; mm > 200v description the lcx16374 is a low voltage cmos 16-bit d-type flip flop with 3 state output non inverting fabricated with sub-micron silicon gate and double-layer metal wiring c 2 mos technology. it is ideal for low power and high speed applications; it can be interfaced to 5v signal enviroment for both inputs and outputs. these 16 bit d-type flip-flops are controlled by two clock inputs (nck) and two output enable inputs (noe). on the positive transition of the (nck), the nq outputs will be set to the logic state that were setup at the nd inputs. while the (noe) input is low, the 8 outputs (nq) will be in a normal state (high or low logic level) and while high level the outputs will be in a high impedance state. any output control does not affect the internal operation of flip flops; that is, the old data can be retained or the new data can be entered even while the outputs are off. it has better speed performance at 3.3v than 5v lsttl family combined with the true cmos low power consumption. all inputs and outputs are equipped with protection circuits against static discharge, giving them 2kv esd immunity and transient excess voltage. t (tssop48 package) pin connection 1/9
input and output equivalent circuit iec logic symbols pin description pin no symbol name and function 1 1oe 3 state output enable input (active low) 2, 3, 5, 6, 8, 9, 11, 12 1q0 to 1q7 data inputs 13, 14, 16, 17, 19, 20, 22, 23 2q0 to 2q7 data inputs 24 2oe 3 state output enable input (active low) 25 2ck clock input (low to high, edge triggered) 36, 35, 33, 32, 30, 29, 27, 26 2d0 to 2d7 3 state outputs 47, 46, 44, 43, 41, 40, 38, 37 1d0 to 1d7 3 state outputs 48 1ck clock input (low to high, edge triggered) 4, 10, 15, 21, 28, 34, 39, 45 gnd ground (0v) 7, 18, 31, 42 v cc positive supply voltage truth table inputs outputs oe ck d q hxx z l x no change lll lhh 74LCX16374A 2/9
absolute maximum ratings symbol parameter value unit v cc supply voltage -0.5 to + 7.0 v v i dc input voltage -0.5 to + 7.0 v v o dc output voltage (off state) -0.5 to + 7.0 v v o dc output voltage (high or low state) (note1) -0.5 to v cc +0.5 v i ik dc input diode current - 50 ma i ok dc output diode current (note2) 50 ma i o dc output source/sink current 50 ma i cc or i gnd dc v cc or ground current per supply pin 100 ma t stg storage temperature -65 to +150 o c t l lead temperature (10 sec) 300 o c absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these condition is not implied. 1) i o absolute maximum rating must be observed 2) v o v cc recommended operating conditions symbol parameter value unit v cc supply voltage (note 1) 2.0 to 3.6 v v i input voltage 0 to 5.5 v v o output voltage (off state) 0 to 5.5 v v o output voltage (high or low state) 0 to v cc v i oh ,i ol high or low level output current (v cc = 3.0 to 3.6v) 24 ma i oh ,i ol high or low level output current (v cc = 2.7 to 3.0v) 12 ma t op operating temperature: -40 to +85 o c dt/dv input transition rise or fall rate (v cc = 3.0v) (note 2) 0 to 10 ns/v 1) truth table guaranteed: 1.5v to 3.6v 2) v in from 0.8v to 2.0v logic diagram 74LCX16374A 3/9
dc specifications symbol parameter test conditions value unit v cc (v) -40 to 85 o c min. max. v ih high level input voltage 2.7 to 3.6 2.0 v v il low level input voltage 0.8 v v oh high level output voltage 2.7 to 3.6 v i =v ih or v il i o =-100 m av cc -0.2 v 2.7 i o =-12 ma 2.2 3.0 i o =-18 ma 2.4 i o =-24 ma 2.2 v ol low level output voltage 2.7 to 3.6 v i =v ih or v il i o =100 m a0.2 v 2.7 i o =12 ma 0.4 3.0 i o =16 ma 0.4 3.0 i o =24 ma 0.55 i i input leakage current 2.7 to 3.6 v i =0 to5.5v 5 m a i oz 3 state output leakage current 2.7 to 3.6 v i =v ih or v il v o =0to5.5v 5 m a i off power off leakage current 0 v i or v o = 5.5v (per pin) 10 m a i cc quiescent supply current 2.7 to 3.6 v i =v cc or gnd 20 m a v i or v o = 3.6to5.5v 20 d i cc icc incr. per input 2.7 to 3.6 v ih =v cc -0.6v 500 m a dynamic switching characteristics symbol parameter test conditions value unit v cc (v) t a =25 o c min. typ. max. v olp dynamic low voltage quiet output (note 1) 3.3 c l =50pf v il =0v v ih =3.3v 0.8 v v olv -0.8 1) number of outputs defined as ono. measured with on-1o outputs switching from high to low or low to high. the remaining output is measured in the low state. 74LCX16374A 4/9
capacitive characteristics symbol parameter test conditions value unit v cc (v) t a =25 o c min. typ. max. c in input capacitance 3.3 v in =0tov cc 7 pf c out output capacitance 3.3 v in =0tov cc 8 pf c pd power dissipation capacitance (note 1) 3.3 f in = 10mhz v in =0orv cc 20 pf 1) c pd is defined as the value of the ic's internal equivalent capacitance which is calculated from the operating current consumption without load. average operting current can be obtained by the following equation. i cc (opr) = c pd ? v cc ? f in +i cc /n (per circuit) ac electrical characteristics (c l = 50 pf, r l = 500 w , input t r =t f = 2.5 ns) symbol parameter test condition value unit v cc (v) waveform -40 to 85 o c min. max. t plh t phl propagation delay time 2.7 1 1.5 8.0 ns 3.0to3.6 1.5 7.0 t pzl t pzh output enable time to high and low level 2.7 2 1.5 8.2 ns 3.0to3.6 1.5 7.2 t plz t phz output disable time from high and low level 2.7 2 1.5 8.2 ns 3.0to3.6 1.5 7.2 t s setup time, high or low level dn to cp 2.7 1 2.5 ns 3.0to3.6 2.5 t h hold time, high or low level dn to cp 2.7 1 1.5 ns 3.0to3.6 1.5 t w cp pulse width, high or low 2.7 3 4.0 ns 3.0to3.6 3.0 f max clock pulse frequency 3.0 to 3.6 1 170 mhz t oslz t oshl output to output skew time (note 1, 2) 3.0 to 3.6 1.0 ns 1) skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either high or low (t oslh =|t plhm -t plhn |, t oshl =|t phlm -t phln |) 2) parameter guaranteed by design 74LCX16374A 5/9
test circuit test switch t plh ,t phl open t pzl ,t plz 6v t pzh ,t phz gnd c l = 50 pf or equivalent (includes jig and probe capacitance) r l =r 1 = 500 w or equivalent r t =z out of pulse generator (typically 50 w ) waveform 1: propagation delays, setup and hold times (f=1mhz; 50% duty cicle) 74LCX16374A 6/9
waveform 2: output enable and disable times (f=1mhz; 50% duty cicle) waveform 3: pulse width 74LCX16374A 7/9
dim. mm inch min. typ. max. min. typ. max. a 1.1 0.433 a1 0.05 0.10 0.15 0.002 0.004 0.006 a2 0.85 0.9 0.95 0.335 0.354 0.374 b 0.17 0.27 0.0067 0.011 c 0.09 0.20 0.0035 0.0079 d 12.4 12.5 12.6 0.408 0.492 0.496 e 7.95 8.1 8.25 0.313 0.319 0.325 e1 6.0 6.1 6.2 0.236 0.240 0.244 e 0.5 bsc 0.0197 bsc k0 o 4 o 8 o 0 o 4 o 8 o l 0.50 0.60 0.70 0.020 0.024 0.028 c e b a2 a e1 d 1 pin 1 identification a1 l k e tssop48 mechanical data 74LCX16374A 8/9
information furnished is believed to be accurate and reliable. however, sgs-thomson microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. no license is granted by implication or otherwise under any patent or patent rights of sgs-thomson microelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersede s and replaces all information previously supplied. sgs-thomson microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of sgs-thomson microelectonics. ? 1997 sgs-thomson microelectronics - printed in italy - all rights reserved sgs-thomson microelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a ... 74LCX16374A 9/9
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