1. general description the 74hc393; 7474hct393 is a dual 4-stage binary ripple counter. each counter features a clock input (ncp ), an overriding asynchronous master reset input (nmr) and 4 buffered parallel outputs (nq0 to nq3). the counter advances on the high-to-low transition of ncp . a high on nmr clears the counter stages and forces the outputs low, independent of the state of ncp . inputs include clamp diodes. this enables the use of current limiting resistors to interface inputs to voltages in excess of v cc . 2. features and benefits ? input levels: ? for 74hc393: cmos level ? for 74hct393: ttl level ? complies with jedec standard no. 7a ? esd protection: ? hbm jesd22-a114f exceeds 2000 v ? mm jesd22-a115-a exceeds 200 v. ? two 4-bit binary counters with individual clocks ? divide by any binary module up to 28 in one package ? two master resets to clear each 4-bit counter individually 3. ordering information 74hc393; 74hct393 dual 4-bit binary ripple counter rev. 4 ? 16 may 2013 product data sheet table 1. ordering information type number package temperature range name description version 74hc393n ? 40 ? c to +125 ? c dip14 plastic dual in-line package; 14 leads (300 mil) sot27-1 74hct393n 74hc393d ? 40 ? c to +125 ? c so14 plastic small outline package ; 14 leads; body width 3.9 mm sot108-1 74hct393d 74hc393db ? 40 ? c to +125 ? c ssop14 plastic shrink small out line package; 14 leads; body width 5.3 mm sot337-1 74hct393db 74hc393pw ? 40 ? c to +125 ? c tssop14 plastic thin shrink small outline package; 14 leads; body width 4.4 mm sot402-1 74hct393pw 74hc393bq ? 40 ? c to +125 ? c dhvqfn14 plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 14 terminals; body 2.5 ? 3 ? 0.85 mm sot762-1 74HCT393BQ
74hc_hct393 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 4 ? 16 may 2013 2 of 21 nxp semiconductors 74hc393; 74hct393 dual 4-bit binary ripple counter 4. functional diagram fig 1. logic symbol fig 2. iec logic symbol 001aad532 1cp 1 1 2 6 5 3 4 1mr 1q0 1q1 1q2 1q3 2cp 2 13 12 8 9 11 10 2mr 2q0 2q1 2q2 2q3 001aad533 ct = 0 ct 12 13 8 9 11 10 + 0 3 ct = 0 ct 2 1 6 5 3 4 + 0 3 ctr4 ctr4 fig 3. functional diagram fig 4. state diagram 001aad534 1cp 4-bit binary ripple counter 4-bit binary ripple counter 1 2 6 5 3 4 1mr 1q0 1q1 1q2 1q3 2cp 13 12 8 9 11 10 2mr 2q0 2q1 2q2 2q3 001aad535 0 15 14 13 12 1 2 3 4 5 6 7 11 10 9 8
74hc_hct393 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 4 ? 16 may 2013 3 of 21 nxp semiconductors 74hc393; 74hct393 dual 4-bit binary ripple counter 5. pinning information 5.1 pinning fig 5. logic diagram (one counter) 001aad536 rd ff 1 t cp q mr rd ff 2 t q rd ff 3 t q rd ff 4 t q q0 q1 q2 q3 fig 6. pin configuration dip14 and so14 + & |