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1/11 september 2002 n converts from 1 to 8 to inputs binary n provides cascading feature to handle any number of inputs n group select indicates one or more priority inputs n quiescent current specified up to 20v n standardized symmetrical output characteristics n 5v, 10v and 15v parametric ratings n input leakage current i i = 100na (max) at v dd = 18v t a = 25c n 100% tested for quiescent current n meets all requirements of jedec jesd13b "standard specifications for description of b series cmos devices" description hcf4532b is a monolithic integrated circuit fabricated in metal oxide semiconductor technology available in dip and sop packages. hcf4532b consists of a combinational logic that encodes the highest priority input (d7-d0) to a 3-bit binary code. the eight inputs, d7 through d0, each have an assigned priority. d7 is the highest priority and d0 is the lowest. the priority encoder is inhibited when the chip enable input e i is low. when e i is high, the binary representation of the highest priority input appears on output lines q2-q0, and the group select line gs is high to indicate that priority inputs are present. the enable out (e o ) is high when no priority inputs are present. if any input is high, e o is low and all cascaded lower order stages are disabled. hcf4532b 8-bit priority encoder pin connection order codes package tube t & r dip hcf4532bey sop hcf4532bm1 HCF4532M013TR dip sop
hcf4532b 2/11 iinput equivalent circuit pin description functional diagram truth table x : dont care pin no symbol name and function 10, 11, 12, 13, 1, 2, 3, 4 d0 to d7 data inputs 9, 7, 6 q0 to q2 data output lines 5 e i chip enable input 15 e o enable output 14 gs group select line 8 v ss negative supply voltage 16 v dd positive supply voltage inputs outputs e i d7 d6 d5 d4 d3 d2 d1 d0 gs q2 q1 q0 e o lxxxxxxxxl l l l l hllllllllllllh hhxxxxxxxhhhhl hlhxxxxxxhhhl l hl lhxxxxxhhl l l hl l lhxxxxhhlhl hllllhxxxhlhhl hlllllhxxhlhll hllllllhxhllhl hlllllllhhllll
hcf4532b 3/11 logic diagram 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. all voltage values are referred to v ss pin voltage. symbol parameter value unit v dd supply voltage -0.5 to +22 v v i dc input voltage -0.5 to v dd + 0.5 v i i dc input current 10 ma p d power dissipation per package 200 mw power dissipation per output transistor 100 mw t op operating temperature -55 to +125 c t stg storage temperature -65 to +150 c
hcf4532b 4/11 recommended operating conditions dc specifications the noise margin for both "1" and "0" level is: 1v min. with v dd =5v, 2v min. with v dd =10v, 2.5v min. with v dd =15v symbol parameter value unit v dd supply voltage 3 to 20 v v i input voltage 0 to v dd v t op operating temperature -55 to 125 c symbol parameter test condition value unit v i (v) v o (v) |i o | ( m a) v dd (v) t a = 25c -40 to 85c -55 to 125c min. typ. max. min. max. min. max. i l quiescent current 0/5 5 0.04 5 150 150 m a 0/10 10 0.04 10 300 300 0/15 15 0.04 20 600 600 0/20 20 0.08 100 3000 3000 v oh high level output voltage 0/5 <1 5 4.95 4.95 4.95 v 0/10 <1 10 9.95 9.95 9.95 0/15 <1 15 14.95 14.95 14.95 v ol low level output voltage 5/0 <1 5 0.05 0.05 0.05 v 10/0 <1 10 0.05 0.05 0.05 15/0 <1 15 0.05 0.05 0.05 v ih high level input voltage 0.5/4.5 <1 5 3.5 3.5 3.5 v 1/9 <1 10 7 7 7 1.5/13.5 <1 15 11 11 11 v il low level input voltage 4.5/0.5 <1 5 1.5 1.5 1.5 v 9/1 <1 10 3 3 3 13.5/1.5 <1 15 4 4 4 i oh output drive current 0/5 2.5 <1 5 -1.36 -3.2 -1.1 -1.1 ma 0/5 4.6 <1 5 -0.44 -1 -0.36 -0.36 0/10 9.5 <1 10 -1.1 -2.6 -0.9 -0.9 0/15 13.5 <1 15 -3.0 -6.8 -2.4 -2.4 i ol output sink current 0/5 0.4 <1 5 0.44 1 0.36 0.36 ma 0/10 0.5 <1 10 1.1 2.6 0.9 0.9 0/15 1.5 <1 15 3.0 6.8 2.4 2.4 i i input leakage current 0/18 any input 18 10 -5 0.1 1 1 m a c i input capacitance any input 5 7.5 pf
hcf4532b 5/11 dynamic electrical characteristics (t amb = 25c, c l = 50pf, r l = 200k w , t r = t f = 20 ns) (*) typical temperature coefficient for all v dd value is 0.3 %/c. typical applications 16-level priority encoder symbol parameter test condition value (*) unit v dd (v) min. typ. max. t plh t phl propagation delay time (e i to e o , e i to gs) 5 110 220 ns 10 55 110 15 45 85 t plh t phl propagation delay time (e i to q m , d n to gs) 5 170 340 ns 10 85 170 15 65 125 t plh t phl propagation delay time (d n to q m ) 5 220 440 ns 10 110 220 15 85 160 t tlh t thl transition time 5 100 200 ns 10 50 100 15 40 80
hcf4532b 6/11 0 to 9 keyboard encoder truth table x : dont care inputs outputs d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 gs q3 q2 q1 q0 hxxxxxxxxxlhl lh lhxxxxxxxxlhl l l l lhxxxxxxxhlhhh l l lhxxxxxxhlhhl llllh xxxxx hlhlh lllllh xxxx hlhll llllllhxxxhllhh lllllllhxxhllhl llllllllhxhlllh lllllllllhhllll
hcf4532b 7/11 digital to analog conversion test circuit c l = 50pf or equivalent (includes jig and probe capacitance) r l = 200k w r t = z out of pulse generator (typically 50 w )
hcf4532b 8/11 waveform : propagation delay times (f=1mhz; 50% duty cycle)
hcf4532b 9/11 dim. mm. inch min. typ max. min. typ. max. a1 0.51 0.020 b 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 0.050 plastic dip-16 (0.25) mechanical data p001c
hcf4532b 10/11 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 s ? (max.) so-16 mechanical data po13h 8
hcf4532b 11/11 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no res ponsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devi ces or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malt a - morocco singapore - spain - sweden - switzerland - united kingdom - united states. ? http://www.st.com

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