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1/11 september 2004 5v tolerant inputs high speed: t pd = 5.0ns (max.) at v cc = 3v power down protection on inputs and outputs symmetrical output impedance: |i oh | = i ol = 24ma (min) at v cc = 3v pci bus levels guaranteed at 24 ma balanced propagation delays: t plh ? t phl operating voltage range: v cc (opr) = 2.0v to 3.6v (1.5v data retention) pin and function compatible with 74 series 14 latch-up performance exceeds 500ma (jesd 17) esd performance: hbm > 2000v (mil std 883 method 3015); mm > 200v description the 74LCX14 is a low voltage cmos hex schmitt inverter fabricated with sub-micron silicon gate and double-layer metal wiring c 2 mos technology. it is ideal for low power and high speed 3.3v applications. it can be interfaced to 5v signal environment for inputs. it has same speed performance at 3.3v than 5v ac/act family, combined with a lower power consumption. pin configuration and function are the same as those of the 74lcx04 but the 74LCX14 has hysteresis between the positive and negative input threshold typically of 0.8v. this together with its schmitt trigger function allows it to be used on line receivers with slow rise/fall input signals. all inputs and outputs are equipped with protection circuits against static discharge, giving them 2kv esd immunity and transient excess voltage. 74LCX14 low voltage cmos hex schmitt inverter with 5v tolerant inputs figure 1: pin connection and iec logic symbols table 1: order codes package t & r sop 74LCX14mtr tssop 74LCX14ttr tssop sop rev. 5
74LCX14 2/11 figure 2: input and output equivalent circuit table 2: pin description table 3: truth table table 4: absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditi ons is not implied 1) i o absolute maximum rating must be observed. 2) v o < gnd pin n symbol name and function 1, 3, 5, 9, 11, 13 1a to 6a data inputs 2, 4, 6, 8, 10, 12 1y to 6y data outputs 7 gnd ground (0v) 14 v cc positive supply voltage ay lh hl 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 (v cc = 0v) -0.5 to +7.0 v v o dc output voltage (high or low state) (note 1) -0.5 to v cc + 0.5 v i ik dc input diode current - 50 ma i ok dc output diode current (note 2) - 50 ma i o dc output current 50 ma i cc dc supply current per supply pin 100 ma i gnd dc ground current per supply pin 100 ma t stg storage temperature -65 to +150 c t l lead temperature (10 sec) 300 c
74LCX14 3/11 table 5: recommended operating conditions 1) truth table guaranteed: 1.5v to 3.6v table 6: dc specifications table 7: dynamic switching characteristics 1) number of outputs defined as "n". measured with "n-1" outputs switching from high to low or low to high. the remaining outpu t is measured in the low state. 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 (v cc = 0v) 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 = 2.7v) 12 ma t op operating temperature -55 to 125 c symbol parameter test condition value unit v cc (v) -40 to 85 c -55 to 125 c min. max. min. max. v t+ positive input threshold 3.0 1.2 2.2 1.2 2.2 v v t- negative input threshold 3.0 0.6 1.5 0.6 1.5 v v h hysteresis voltage 3.0 0.4 1.2 0.4 1.2 v v oh high level output voltage 2.7 to 3.6 i o =-100 av cc -0.2 v cc -0.2 v 2.7 i o =-12 ma 2.2 2.2 3.0 i o =-18 ma 2.4 2.4 i o =-24 ma 2.2 2.2 v ol low level output voltage 2.7 to 3.6 i o =100 a 0.2 0.2 v 2.7 i o =12 ma 0.4 0.4 3.0 i o =16 ma 0.4 0.4 i o =24 ma 0.55 0.55 i i input leakage current 2.7 to 3.6 v i = 0 to 5.5v 5 5 a i off power off leakage current 0 v i or v o = 5.5v 10 10 a i cc quiescent supply current 2.7 to 3.6 v i = v cc or gnd 10 10 a v i or v o = 3.6 to 5.5v 10 10 ? i cc i cc incr. per input 2.7 to 3.6 v ih = v cc - 0.6v 500 500 a symbol parameter test condition value unit v cc (v) t a = 25 c min. typ. max. v olp dynamic low level quiet output (note 1) 3.3 c l = 50pf v il = 0v, v ih = 3.3v 0.8 v v olv -0.8
74LCX14 4/11 table 8: ac electrical characteristics 1) skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch- ing 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 table 9: capacitive characteristics 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. (refer to test circuit). average operating current can be obtained by the following equation. i cc(opr) = c pd x v cc x f in + i cc /6 (per gate) figure 3: test circuit c l = 50pf or equivalent (includes jig and probe capacitance) r l = 500 ? or equivalent r t = z out of pulse generator (typically 50 ? ) symbol parameter test condition value unit v cc (v) c l (pf) r l ( ? ) t s = t r (ns) -40 to 85 c -55 to 125 c min. max. min. max. t plh t phl propagation delay time 2.7 50 500 2.5 6.5 6.5 ns 3.0 to 3.6 1.5 5.0 1.5 5.0 t oslh t oshl output to output skew time (note1, 2) 3.0 to 3.6 50 500 2.5 1.0 1.0 ns symbol parameter test condition value unit v cc (v) t a = 25 c min. typ. max. c in input capacitance 3.3 v in = 0 to v cc 6pf c pd power dissipation capacitance (note 1) 3.3 f in = 10mhz v in = 0 or v cc 48 pf
74LCX14 5/11 figure 4: waveform - propagation delay (f=1mhz; 50% duty cycle)
74LCX14 6/11 dim. mm. inch min. typ max. min. typ. max. a 1.35 1.75 0.053 0.069 a1 0.1 0.25 0.004 0.010 a2 1.10 1.65 0.043 0.065 b 0.33 0.51 0.013 0.020 c 0.19 0.25 0.007 0.010 d 8.55 8.75 0.337 0.344 e 3.8 4.0 0.150 0.157 e 1.27 0.050 h 5.8 6.2 0.228 0.244 h 0.25 0.50 0.010 0.020 l 0.4 1.27 0.016 0.050 k0 8 0 8 ddd 0.100 0.004 so-14 mechanical data 0016019d
74LCX14 7/11 dim. mm. inch min. typ max. min. typ. max. a 1.2 0.047 a1 0.05 0.15 0.002 0.004 0.006 a2 0.8 1 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 d 4.9 5 5.1 0.193 0.197 0.201 e 6.2 6.4 6.6 0.244 0.252 0.260 e1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 bsc 0.0256 bsc k0? 8?0? 8? l 0.45 0.60 0.75 0.018 0.024 0.030 tssop14 mechanical data c e b a2 a e1 d 1 pin 1 identification a1 l k e 0080337d
74LCX14 8/11 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 6.4 6.6 0.252 0.260 bo 9 9.2 0.354 0.362 ko 2.1 2.3 0.082 0.090 po 3.9 4.1 0.153 0.161 p 7.9 8.1 0.311 0.319 tape & reel so-14 mechanical data
74LCX14 9/11 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 6.7 6.9 0.264 0.272 bo 5.3 5.5 0.209 0.217 ko 1.6 1.8 0.063 0.071 po 3.9 4.1 0.153 0.161 p 7.9 8.1 0.311 0.319 tape & reel tssop14 mechanical data
74LCX14 10/11 table 10: revision history date revision description of changes 15-sep-2004 5 ordering codes revision - pag. 1.
74LCX14 11/11 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics all other names are the property of their respective owners ? 2004 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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