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1/11 july 2001 n high speed : f max = 66 mhz (typ.) at v cc =6v n low power dissipation: i cc =4 m a(max.) at t a =25 c n high noise immunity: v nih =v nil =28%v cc (min.) n symmetrical output impedance: |i oh |=i ol = 4ma (min) n balanced propagation delays: t plh @ t phl n wide operating voltage range: v cc (opr) = 2v to 6v n pin and function compatible with 74 series 377 description the m74hc377 is an high speed cmos octal d type flip flop fabricated with silicon gate c 2 mos technology. information at the d inputs meeting the setup time requirements is transferred to the q outputs on the positive going edge of the clock pulse if the enable input g is low. clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive going pulse. when the clock input is at either the high or low level, the d input signal has no effect at the output. all inputs are equipped with protection circuits against static discharge and transient excess voltage. m74hc377 octal d type flip flop pin connection and iec logic symbols order codes package tube t & r dip m74hc377b1r sop m74hc377m1r M74HC377RM13TR tssop m74hc377ttr tssop dip sop
m74hc377 2/11 input and output 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 1g data enable input (active low) 2, 5, 6, 9, 12, 15, 16, 19 1q to 8q flip flop outputs 3, 4, 7, 8, 13, 14, 17, 18 1d to 8d data inputs 11 clock clock input (low to high, edge triggered) 10 gnd ground (0v) 20 vcc positive supply voltage inputs outputs g clock data q h x x no change lll lhh x x no change
m74hc377 3/11 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 (*) 500mw at 65 c; derate to 300mw by 10mw/ c from 65 cto85 c recommended operating conditions symbol parameter value unit v cc supply voltage -0.5 to +7 v v i dc input voltage -0.5 to v cc + 0.5 v v o dc output voltage -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 p d power dissipation 500(*) mw t stg storage temperature -65 to +150 c t l lead temperature (10 sec) 300 c symbol parameter value unit v cc supply voltage 2to6 v v i input voltage 0 to v cc v v o output voltage 0 to v cc v t op operating temperature -55 to 125 c t r ,t f input rise and fall time v cc = 2.0v 0 to 1000 ns v cc = 4.5v 0 to 500 ns v cc = 6.0v 0 to 400 ns
m74hc377 4/11 dc specifications 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 2.0 1.5 1.5 1.5 v 4.5 3.15 3.15 3.15 6.0 4.2 4.2 4.2 v il low level input voltage 2.0 0.5 0.5 0.5 v 4.5 1.35 1.35 1.35 6.0 1.8 1.8 1.8 v oh high level output voltage 2.0 i o =-20 m a 1.9 2.0 1.9 1.9 v 4.5 i o =-20 m a 4.4 4.5 4.4 4.4 6.0 i o =-20 m a 5.9 6.0 5.9 5.9 4.5 i o =-4.0 ma 4.18 4.31 4.13 4.10 6.0 i o =-5.2 ma 5.68 5.8 5.63 5.60 v ol low level output voltage 2.0 i o =20 m a 0.0 0.1 0.1 0.1 v 4.5 i o =20 m a 0.0 0.1 0.1 0.1 6.0 i o =20 m a 0.0 0.1 0.1 0.1 4.5 i o =4.0 ma 0.17 0.26 0.33 0.40 6.0 i o =5.2 ma 0.18 0.26 0.33 0.40 i i input leakage current 6.0 v i =v cc or gnd 0.1 1 1 m a i cc quiescent supply current 6.0 v i =v cc or gnd 44080 m a
m74hc377 5/11 ac electrical characteristics (c l = 50 pf, input t r =t f = 6ns) 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 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. t tlh t thl output transition time 2.0 30 75 95 110 ns 4.5 8151922 6.0 7131619 t plh t phl propagation delay time (clock - q) 2.0 57 140 175 210 ns 4.5 17 28 35 42 6.0 13 24 30 36 f max maximum clock frequency 2.0 7.2 14 5.8 4.8 mhz 4.5 36 56 29 24 6.0 42 66 34 28 t w(h) t w(l) minimum pulse width (clock) 2.0 24 75 95 115 ns 4.5 6151923 6.0 5131620 t s minimum set-up time (d - ck) 2.0 24 75 95 115 ns 4.5 6151923 6.0 5131620 t s minimum set-up time (g - ck) 2.0 30 75 95 115 ns 4.5 8151923 6.0 6131620 t h minimum hold time 2.0 0 0 0 ns 4.5 0 0 0 6.0 0 0 0 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. c in input capacitance 5.0 5101010pf c pd power dissipation capacitance (note 1) 5.0 34 pf
m74hc377 6/11 test circuit c l = 50pf or equivalent (includes jig and probe capacitance) r t =z out of pulse generator (typically 50 w ) waveform 1: propagation delay time, minimum pulse width (ck), setup and hold time (d to ck) (f=1mhz; 50% duty cycle)
m74hc377 7/11 waveform 2 :ck maximum frequency (f=1mhz; 50% duty cycle) waveform 3 : setup and hold time (g to ck) (f=1mhz; 50% duty cycle)
m74hc377 8/11 dim. mm. inch min. typ max. min. typ. max. a1 0.254 0.010 b 1.39 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 d 25.4 1.000 e 8.5 0.335 e 2.54 0.100 e3 22.86 0.900 f 7.1 0.280 i 3.93 0.155 l 3.3 0.130 z 1.34 0.053 plastic dip-20 (0.25) mechanical data p001j
m74hc377 9/11 dim. mm. inch min. typ max. min. typ. max. a 2.65 0.104 a1 0.1 0.2 0.004 0.008 a2 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 c 0.5 0.020 c1 45 (typ.) d 12.60 13.00 0.496 0.512 e 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 11.43 0.450 f 7.40 7.60 0.291 0.300 l 0.50 1.27 0.020 0.050 m 0.75 0.029 s8 (max.) so-20 mechanical data po13l
m74hc377 10/11 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 6.4 6.5 6.6 0.252 0.256 0.260 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 tssop20 mechanical data c e b a2 a e1 d 1 pin 1 identification a1 l k e 0087225c
m74hc377 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 11/11

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