74LS393 SYC | Alldatasheet

Document overview

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Technical content

Features

■ Dual version of the popular DM74LS93 ■ DM74LS393 dual 4-bit binary counter with individual clocks ■ Direct clear for each 4-bit counter ■ Dual 4-bit versions can significantly improve system densities by reducing counter package count by 50% ■ Typical maximum count frequency 35 MHz ■ Buffered outputs reduce possibility of collector commu- tation Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Counter Sequence (Each Counter) H = HIGH Logic Level L = LOW Logic Level Order Number Package Number Package Description DM74LS393M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow DM74LS373N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Count Outputs Q D Q C Q B Q A

0 LLLL

1 LLLH

7 LHHH

8 HLLL

11 H L H H

12 H H L L

13 H H L H

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Absolute Maximum Ratings(Note 1) Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions Note 2: C L = 15 pF , RL = 2 kΩ , TA = 25°C and VCC = 5V. Note 3: C L = 50 pF , RL = 2 kΩ , TA = 25°C and VCC = 5V. Note 4: The symbol (↓) indicates that the falling edge of the clear pulse is used for reference. Note 5: TA = 25°C, and VCC = 5V.

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) Note 6: All typicals are at VCC = 5V, TA = 25°C. Note 7: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 8: ICC is measured with all outputs open, both CLEAR inputs grounded following momentary connection to 4.5V, and all other inputs grounded. Supply Voltage 7V Input Voltage Clear 7V A5 . 5 V Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units VCC Supply Voltage 4.75 5 5.25 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −0.4 mA IOL LOW Level Output Current 8 mA fCLK Clock Frequency (Note 2) 0 25 MHz fCLK Clock Frequency (Note 3) 0 20 MHz tW Pulse Width (Note 5) A 20 nsClear HIGH 20 tREL Clear Release Time (Note 4)(Note 5) 25 ↓ ns TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 6) VI Input Clamp Voltage V CC = Min, II = −18 mA −1.5 V VOH HIGH Level V CC = Min, IOH = Max 2.7 3.4 V Output Voltage V IL = Max, VIH = Min VOL LOW Level V CC = Min, IOL = Max 0.35 0.5 Output Voltage V IL = Max, VIH = Min V IOL = 4 mA, VCC = Min 0.25 0.4 II Input Current @ Max V CC = Max, VI = 7V Clear 0.1 mA Input Voltage V CC = Max, VI = 5.5V A 0.2 IIH HIGH Level V CC = Max, VI = 2.7V Clear 20 µA Input Current A 40 IIL LOW Level V CC = Max, VI = 0.4V Clear −0.4 mA Input Current A −1.6 IOS Short Circuit Output Current VCC = Max (Note 7) −20 −100 mA ICC Supply Current V CC = Max (Note 8) 15 26 mA www.sycelectronica.com.ar

at VCC = 5V and TA = 25°C R L = 2 kΩ Symbol Parameter From (Input) C L = 15 pF C L = 50 pF Units To (Output) Min Max Min Max fMAX Maximum Clock Frequency A to Q A 25 20 MHz tPLH Propagation Delay Time A to QA 20 24 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A to QA 20 30 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time A to QD 60 87 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A to QD 60 87 ns HIGH-to-LOW Level Output tPHL Propagation Delay Time Clear to Any Q 39 45 ns HIGH-to-LOW Level Output www.sycelectronica.com.ar

DM74LS393 Dual 4-Bit Binary Counter Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N14A www.sycelectronica.com.ar