TC74AC390P | F/ FN DUAL DECADE COUNTER The TC74AC390 is an advanced high speed CMOS DUAL DECADE COUNTER fabricated with silicon gate and double-layer metal wiring CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. It consists of two independent 4-bit counters, each composed of a divideby-two and a divideby-five counter.The divide~bytwo counter is incremented on the negative going transition of clock A(CKA). The divide - by-five counter is incremented on the negative going transition of clock B(CKB). The counter can be cascaded to form decade, bi-quinary, or various combinations up to a divideby100 counter. When the CLEAR input is set high, the Q outputs are set low independent of the clock inputs. All inputs are equipped with protection circuits against static dischage or transient excess voltage. FEATURES: * High Speed --+ess-ssseseesseseeeeneeseeane fuax=160MHa(typ.) at Voc=5V * Low Power Dissipation ---------+--++- Ioc=8 u A(Max.) at Ta=25 * High Noise Immunity +--+ Vain = Vii =28% Vec(Min.) * Symmetrical Output Impedance | Igy | =Io. =24mA(Min.) Capability of driving 50Q transmission lines. * Balanced Propagation Delays ----- tyi4tpHt * Wide Operating Voltage Range --- Vo-(opr)=2V~5.5V * Pin and Function Compatible with 74HC390 P(DIP16-P-300A) F(SOP16P-300) FN(SOL16P-150) PIN ASSIGNMENT iCKA t C 7 16 Vog 1CLR 27] r] 15 2CKA 10a 30] 14 2CLR ICKB 49 r} 13 20a 108 5[J f) 12 2CKB 10c 6 11 208 100 70 10 20c eno 8 ; 9 20D (TOP VIEW) 1EC LOGIC SYMBOL BLOCK DIAGRAM I1CLR ICKA 10a 106 1ac 10D ICKB 2CLR 2cK 204 20a 2CKB 200 16 [BINARY | 3, 1.16 | 3.13 oa COUNTER CLR 2.14 | ,11 QUINARY] 6,10 CKB OC COUNTER] 7,9 00 |__| Vec=18.GND=8 AC-256 TC74AC390P / F / FN ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT Supply Voltage Range Voc 0.5 ~6.0 Vv *500mW in the range of Ta= n& -40C~ 65C. From Ta=65C DC Input Voltage Vin 0.5 ~Voe +0.5 V to 85C a derating factor of DC Output Voltage Vour 0.5 ~ Vo + 0.5 Vv -10mW/*C shall be applied Input Diode Current lik +20 mA until 300m W. Output Diode Current ly +50 mA DC Output Current lour +50 mA DC V,,/Ground Current loo +200 mA Power Dissipation Py 500(DIP)*/180(SOP) mW Storage Temperature Tstg -65 ~150 c Lead Temperature 10sec T, 300 RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL VALUE UNIT Supply Voltage Voc 2.0~5.5 Vv Input Voltage Vin 0~ Ve v Output Voltage Voor 0 ~ Voc Vv Operating Temperature Topr -40 ~ 85 Cc 0 ~ 100(Voc=3.3+0.3V) Input Rise and Fall Time | dt/dv ns/y O~ 20(Vcc= 5 =0.5V) OC ELECTRICAL CHARACTERISTICS =2 =-4Qjm PARAMETER |SYMBOL] TEST CONDITION = | vq Ta=25%C Pas 40~85%C ni MIN. | TYP. |MAX.| MIN. |MAX. . 2.0] 1.50 - - 1. 50 - High-Level . . _ _ . _ Input Voltage Vin a ee ig _ _ 2 10 _ Vv 2.0 - ~ 0. 50 ~ 0. 50 Low~ Level Vit 30) - | - | 090] - | ag] Vv Input Voltage 5.5 _ - 1.65 - 1.65 2.0] 1.9 2.0 - 1.9 > Vaz Ip1=-504A 3.0] 2.9 3.0 - 2.9 - High-Level Vai In= 4.5] 4.4 4.5 ~ 4.4 - Vv utput Voltage In=-4mA [3.01258] - Jaal - Vinor Vin |igi=-24ma 1455 | 394 | - - [3.80] - Iou=-75mA | 5.5 - - - 3. 85 - 2.0 - 0.0 0.1 ~- 0.1 To. =50uA 3.0 - 0.0 0, 1 - 0.1 Low-Level Vo. Vin= 45] - | 00 | or | - [oil , utput Voltage Iq =12mA 3.0 - - 0. 36 - 0. 44 Vidor Vir [lama [45] - |036| - | 0.44 Iq=T5mA* | 5.5 ~ - - ~ 1,65 Input Leakage Current] lin Vin=Voc or GND 5.5 - - +0.1 - +1,0 A Quiescent Supply Current lec Vin=Vcc or GND 5.5 - - 8.0 - 80. 0 ut * :This spec indicates the capability of driving 501 transmission lines. One output should be tested at a time for a 10ms maximum duration. AC-257 TOSHIBA CORPORATION TC74AC390P / F/ FN TRUTH TABLE INPUTS OUTPUTS CKA CKB CLR QA aB ac ao x x H L L L L ~~ x L BINARY COUNT UP x eK L QUINARY COUNT UP SYSTEM DIAGRAM = 1/15 Lge ah CKB o> cur po Da CKA ~of>f>o dex, 6}___q>__* oa + Lys a Do gen G q>- sh as v Lgo al + dex a} + ag Ldo ~dck, G ~<f>" ap TOSrHiBA CORPORATION AC-258 TC74AC390P / F / FN TIMING CHART ()BCO COUNT SEQUENCE CLR | oa iti LS Ls LI LI LI Lo. as |} ee ee | ac 73 | ap | | ik 1 2 3 4 8 8 M0 nN @ Oo 1 2 CLR QA connected to CKB (2)BI-QUINARY COUNT SEQUENCE * oa JILULULUUU UU UD UU Uk CLR I eo tt LI | [LS 1 LS ac ry Le | FT tL | tT an. [| tl 1 ann 1 a betas CLR + QD connected to CKA AC-259 TC74AC390P / F/ FN TIMING REQUIREMENTS (Input tr=ts=3ns) Ta=25C Ta=40 ~85C PARAMETER SYMBOL | TEST CONDITION Ve TYP. LIMIT LIMIT UNIT Minimum Pulse Width | twat) B.3+0. 3 - 7.0 7.0 (CLOCK) two) 5.0+0.5 - 5.0 5.0 Minimum Pulse Width t B.3+0.3 - 7.0 7.0 3 (CLR) wR) 5.0+05 ~ 5.0 5.0 n + _ Minimum Removal Time | trem vey 4 _ te te AC ELECTRICAL CHARACTERISTICS(C.=50pF ,Ri=5002, Input tr=te =3ns) Ta=25C Ta=40 ~85C PARAMETER SYMBOL | TEST CONDITION Voc_| MIN. | TYP. [MAX.] MIN. [MAX. UNIT Propagation Delay Time | tpt B.30.3 - 8.2 | 14.0 1.0 | 16.0 (CKA-QA) tpHL b.0+0.5 5.5 8.4 1.0 9.6 Propagation Delay Time | tpi | QA connected tog 3+9.39 - 17.0 30. 0 1.0 34.0 (CKA-QC) ton, =| CKB b.0+0.5 10.5 17.5 1.0 20.0 Propagation Delay Time | tpi; B.3+0.9 - 88 j 149 | 10 | 170 | Q, (CKB-QB,QD) touL 5.0+0.5 6.0 9, 4 1.0 10.7 Propagation Delay Time | tpt B.340.3 - [ilo | 188 | 1.0 | 21.5 (CKB-QC) tpHL 5.040.595 -~ 71 11.3 1.0 12.8 Propagation Delay Time | | B.3+0.3 ~- | 7.7 | 125 | 1.0 | 143 (CLR-Qn) mi b.0+059 - | 5.7 | 85 | 1.0 | 9.7 Maximum Clock Frequency EMAx B.3+0.3 60 120 - 60 - (CKA) 5.0+0.5 100 180 - 100 - MHz Maximum Clock Frequency fuax B.3+0.3 45 90 - 45 - (CKB) b.0+0.5 80 140 ~ 90 - Input Capacitance Cix - 5 10 = 10 F Power Dissipation Capacitance | Cpp(1) - 40 = = = P Note(1) Crp is defined as the value of the internal equivalent capacitance which operating current consumption without load. Average operating current can be obtained by the equation: locepe =C rp * Voc * fx tic /2(per Counter) TOSHIBA CORPORATION is calculated from the AC-260