1/9 june 2001 n high speed: t pd = 5 ns (typ.) at v cc =5v n low power dissipation: i cc =2 m a (max.) at t a =25 c n compatible with ttl outputs: v ih = 2v (min.), v il = 0.8v (max) n power down protection on inputs & outputs n symmetrical output impedance: |i oh |=i ol = 8 ma (min) n balanced propagation delays: t plh @ t phl n operating voltage range: v cc (opr) = 4.5v to 5.5v n pin and function compatible with 74 series 139 n improved latch-up immunity description the 74vhct139a is an advanced high-speed cmos dual 2 to 4 line decoder/ demultiplexer fabricated with sub-micron silicon gate and double-layer metal wiring c 2 mos technology. the active low enable input can be used for gating or as a data input for demultiplexing applications. when the enable input is held high, all four outputs are high independently of the other inputs. power down protection is provided on all inputs and outputs and 0 to 7v can be accepted on inputs with no regard to the supply voltage. this device can be used to interface 5v to 3v since all inputs are equipped with ttl threshold. all inputs and outputs are equipped with protection circuits against static discharge, giving them 2kv esd immunity and transient excess voltage. 74vhct139a dual 2 to 4 decoder/demultiplexer pin connection and iec logic symbols order codes package tube t & r sop 74vhct139am 74vhct139amtr tssop 74VHCT139ATTR tssop sop
74vhct139a 2/9 input equivalent circuit pin description truth table x : don't care logic diagram this logic diagram has not be used to estimate propagation delays pin no symbol name and function 1, 15 1g, 2g enable inputs 2, 3 1a, 1b address inputs 4, 5, 6, 7 1y0 to 1y3 outputs 12, 11, 10, 9 2y0 to 2y3 outputs 14, 13 2a, 2b address inputs 8 gnd ground (0v) 16 v cc positive supply voltage inputs outputs enable select gbay0y1y2y3 hxxhhhh l l l lhhh l lhhlhh lhlhhlh lhhhhhl
74vhct139a 3/9 absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied 1) v cc =0v 2) high or low state recommended operating conditions 1) v cc =0v 2) high or low state 3) vin from 0.8v to 2v 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 (see note 1) -0.5 to +7.0 v v o dc output voltage (see note 2) -0.5 to v cc + 0.5 v i ik dc input diode current -20 ma i ok dc output diode current 20 ma i o dc output current 25 ma i cc or i gnd dc v cc or ground current 50 ma t stg storage temperature -65 to +150 c t l lead temperature (10 sec) 300 c symbol parameter value unit v cc supply voltage 4.5 to 5.5 v v i input voltage 0 to 5.5 v v o output voltage (see note 1) 0 to 5.5 v v o output voltage (see note 2) 0 to v cc v t op operating temperature -55 to 125 c dt/dv input rise and fall time (see note 3) (v cc = 5.0 0.5v) 0 to 20 ns/v
74vhct139a 4/9 dc specifications ac electrical characteristics (input t r =t f = 3ns) (*) voltage range is 5.0v 0.5v 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 xv cc xf in +i cc /2 (per decoder) symbol parameter test condition value unit v cc (v) t a =25 c -40 to 85 c -55 to 125 c min. typ. max. min. max. min. max. v ih high level input voltage 4.5 to 5.5 222v v il low level input voltage 4.5 to 5.5 0.8 0.8 0.8 v v oh high level output voltage 4.5 i o =-50 m a 4.4 4.5 4.4 4.4 v 4.5 i o =-8 ma 3.94 3.8 3.7 v ol low level output voltage 4.5 i o =50 m a 0.0 0.1 0.1 0.1 v 4.5 i o =8 ma 0.36 0.44 0.55 i i input leakage current 0to 5.5 v i = 5.5v or gnd 0.1 1.0 1.0 m a i cc quiescent supply current 5.5 v i =v cc or gnd 22020 m a i cc additional worst case supply current 5.5 one input at 3.4v, other input at v cc or gnd 1.35 1.5 1.5 ma i opd output leakage current 0 v out = 5.5v 0.5 5.0 5.0 m a symbol parameter test condition value unit v cc (*) (v) c l (pf) t a =25 c -40 to 85 c -55 to 125 c min. typ. max. min. max. min. max. t plh t phl propagation delay time a, b, to y 5.0 15 5.0 7.2 1.0 8.5 1.0 8.5 ns 5.0 50 6.5 9.2 1.0 10.5 1.0 10.5 t plh t phl propagation delay time g to y 5.0 15 4.4 6.3 1.0 7.5 1.0 7.5 ns 5.0 50 5.9 8.3 1.0 9.5 1.0 9.5 symbol parameter test condition value unit t a =25 c -40 to 85 c -55 to 125 c min. typ. max. min. max. min. max. c in input capacitance 6101010pf c pd power dissipation capacitance (note 1) 18 pf
74vhct139a 5/9 test circuit c l =15/50pf or equivalent (includes jig and probe capacitance) r t =z out of pulse generator (typically 50 w ) waveform 1 : propagation delays for inverting outputs (f=1mhz; 50% duty cycle)
74vhct139a 6/9 waveform 2:propagationdelaysfor non-invertingoutputs (f=1mhz; 50% dutycycle)
74vhct139a 7/9 dim. mm. inch min. typ max. min. typ. max. a 1.75 0.068 a1 0.1 0.2 0.003 0.007 a2 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.019 c1 45 (typ.) d 9.8 10 0.385 0.393 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 f 3.8 4.0 0.149 0.157 g 4.6 5.3 0.181 0.208 l 0.5 1.27 0.019 0.050 m 0.62 0.024 s8 (max.) so-16 mechanical data po13h
74vhct139a 8/9 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 tssop16 mechanical data c e b a2 a e1 d 1 pin 1 identification a1 l k e 0080338d
74vhct139a information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringe ment of patents or other righ ts 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 pub lication are subject to change without notice. thi s pub lication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authori zed for use as critical components in life suppo rt devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia - malta - morocco singapore - spain - sweden - swit zerland - united kingdom ? http://w ww.st.com 9/9
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