IW4520B Description The IW4520B Dual Binary Up-Counter consists two identical, internally synchronous 4- stage counters. The counter stages are D- type flip-flops having interchang eable CLOCK and ENABLE lines for incrementing on either the positive-going or negative-going transition.For single-unit operation the ENABLE input is maintained high and the counter advances on each positive-going transition of the CLOCK.The counters are cleared by high levels on their RESET lines. The counter can be cascaded in the ripple mode by connecting Q4 to the enable i nput of the subsequent counter while the CLOCK of the latter is held low. input Features 16 Operating Voltage Range: 3.0 to 18 V Maximum input current of 1u A at 18 V over full packagetemperature range ;100 nA at 18 V and 25 C Noise margin (over full package temperature range): 1.0 V min @ 5.0 V supply 2.0 V min @ 10.0 V supply 16 Package 2.5 V min @ 15.0 V supply Pin Assignment Logic Diagram 2 ENABLE A R 3 Q1A 4 Q2A 5 Q3A 6 Q4A 16 2 15 3 14 Q1 A 4 13 Q2 A 5 12 Q3 A 6 11 Q4 A 7 10 GND 7 RESET A 1 CLOCK A ENABLE A 1 CLOCK A SOP - 16 DIP - 16 8 V CC RESET B Q4 B Q3 B Q2 B Q1 B ENABLE CLOCK B 9 B Function Table 11 CLOCK B 9 ENABLE B 10 R RESET B Inputs Q1 B 12 Q2 B 13 Q3 B 14 Q4 B CLOCK ENABLE H L 15 X X L H PIN16 = VCC PIN 8 = GND X Outputs RESET Mode L IncrementCounter L IncrementCounter L No Change L No Change L No Change L No Change X H L X = don ' t care thru Q4 Q = 1 BEIJING ESTEK ELECTRONICS CO.,LTD 1 IW4520B Absolute Maximum Ratings Symbol Parameter VCC DC Supply Voltage (Referenced to GND) VIN DC Input Voltage (Referenced to GND) VOUT DC Output Voltage (Referenced to GND) IIN DC Input Current, per Pin PD Power Dissipation in Still Air, Plastic PD SOIC Package+ Power Dissipation per Output Transistor Tstg TL Value Unit -0.5 to +20 V -0.5 to V -0.5 to CC V ±10 DIP+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) +0.5 V +0.5 V mA 750 500 mW 100 mW -65 to +150 °C 260 °C Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/ °C from 65 °to 125 °C SOIC Package: : - 7 mW/ °C from 65° to 125°C Recommended Operating Conditions Symbol VCC VIN , VOUT TA Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Min Max Unit 3.0 18 V 0 VCC V -55 125 °C This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, V IN and V OUT should be constrained to the range GND (VIN or VOUT)ﾣ VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC Unused outputs must be left open. BEIJING ESTEK ELECTRONICS CO.,LTD 2 IW4520B DC Electrical Characteristics (Voltages Referenced to GND) VCC Symbol Parameter Test Conditions Guaranteed Limit V -55°C 25°C 125 °C Unit VIH Minimum High-Level Input Voltage VOUT=0.5 V or VCC - 0.5 V VOUT=1.0 V or VCC - 1.0 V VOUT=1.5 V or VCC - 1.5 V 5.0 10 15 3.5 7 11 3.5 7 11 3.5 7 11 V VIL Maximum Low Level Input Voltage VOUT=0.5 V or VCC - 0.5 V VOUT=1.0 V or VCC - 1.0 V VOUT=1.5 V or VCC - 1.5 V 5.0 10 15 1.5 3 4 1.5 3 4 1.5 3 4 V VOH Minimum High-Level VIN=GND or VCC Output Voltage 5.0 10 15 4.95 9.95 14.95 4.95 9.95 14.95 4.95 9.95 14.95 V VOL Maximum Low-Level Output Voltage VIN=GND or VCC 5.0 10 15 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 V Maximum Input Leakage Current VIN= GND or VCC 18 +- 0.1 +- 0.1 +- 1.0 uA ICC Maximum Quiescent Supply Current (per Package) VIN= GND or VCC 5.0 10 15 20 5 5 10 10 150 300 uA 20 100 20 100 IOL Minimum Output Low (Sink) Current VIN= GND or VCC VOL=0.4 V VOL=0.5 V VOL=1.5 V 5.0 10 15 0.64 1.6 4.2 0.51 1.3 3.4 0.36 0.9 2.4 Minimum Output High (Source) Current VIN= GND or VCC VOH=4.6 V VOH=2.5 V VOH=9.5 V VOH=13.5 V 5.0 5.0 10 15 -0.64 –2.0 –1.8 –4.2 -0.51 –1.6 –1.3 –3.4 -0.36 –1.15 –0.9 –2.4 IIN IOH 600 3000 mA mA BEIJING ESTEK ELECTRONICS CO.,LTD 3 IW4520B AC Electrical Characteristics (CL=50pF, RL=200 k ns) Symbol V V Parameter , Input t r =t f =20 Guaranteed Limit ≥-55°C 25°C≤125°C Unit fmax Maximum ClockFrequency, (Figure 1) 5.0 10 15 1.5 3 4 1.5 3 4 0.75 1.5 2 MHz tPHL, tPLH Maximum Propagation Delay, Clock or Enable to Output (Figures 1,3) 5.0 10 15 560 230 160 560 230 160 1120 460 320 ns 5.0 10 15 650 225 170 650 225 170 1300 450 340 ns 5.0 10 15 200 100 80 200 100 80 400 200 160 ns tPHL tTHL, tTLH Output CIN Maximum Propagation Delay, Reset to Output (Figure 2) Maximum Output Transition Time, Any Maximum Input Capacitance - 7.5 pF Timing Requirements (CL=50pF, RL=200 k ns) Symbol V V Parameter , Input t r =t f =20 Guaranteed Limit ≥-55°C 25°C≤125°C Unit tw Minimum Pulse Width, Clock (Figure 1) 5.0 10 15 200 100 70 200 100 70 400 200 140 ns tw Minimum Pulse Width, Reset (Figure 2) 5.0 10 15 250 110 80 250 110 80 500 220 160 ns tw Minimum Pulse Width, Enable (Figure 3) 5.0 10 15 400 200 140 400 200 140 800 400 280 ns Maximum Input Rise and Fall Times (Figure 1) 5.0 10 15 15 5 5 15 5 5 15 5 5 µs tr, t BEIJING ESTEK ELECTRONICS CO.,LTD 4 IW4520B tr tf Vcc 90% 50% 10% GND tw CLOCK tw Vcc RESET 1/fmax 50% tPHL OUTPUT tPHL Vcc tPLH 90% GND Vcc 50% 10% 50% OUTPUT GND GND t t Figure 1. Switching Waveforms Figure 2. Switching Waveforms tw Vcc 50% GND ENABLE tPLH tPHL OUTPUT Vcc 50% GND Timing Diagram 1 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 14 15 4 5 6 7 8 9 10 11 12 13 2 15 16 CLOCK ENABLE Q1 0 1 2 3 4 Q2 Q3 Q4 BEIJING ESTEK ELECTRONICS CO.,LTD 5 IW4520B Expanded Logic Diagram (1/2 of the Device) Q1 Q2 Q D Q R Q3 Q D Q CR Q4 Q D Q CR Q D Q CR RESET ENABLE Address : 6A06--6A07 Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing Postalcode:100039 Tel: 86-010-58895780 / 81 / 82 / 83 / 84 Fax : 010-58895793 Http://www.estek.com.cn Email:[email protected] REV No:01-060837 BEIJING ESTEK ELECTRONICS CO.,LTD 6