74LS90 SYC | Alldatasheet

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Technical content

Features

■ Typical power dissipation 45 mW ■ Count frequency 42 MHz Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Reset/Count Truth Table Order Number Package Number Package Description DM74LS90M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow DM74LS90N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Reset Inputs Output R0(1) R0(2) R9(1) R9(2) Q D Q C Q B Q A H H L X LLLL H H X L LLLL XXHH H L L H X L X L COUNT L X L X COUNT L X X L COUNT X L L X COUNT www.sycelectronica.com.ar

BCD Count Sequence (Note 1) Bi-Quinary (5-2) (Note 2) H = HIGH Level L = LOW Level X = Don't Care Note 1: Output QA is connected to input B for BCD count. Note 2: Output QD is connected to input A for bi-quinary count. Note 3: Output QA is connected to input B. Logic Diagram The J and K inputs shown without connection are for reference only and are functionally at a high level. Count Output Q D Q C Q B Q A

0 LLLL

7 LHHH

8 HLLL

Q A Q D Q C Q B

5 HLLL

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Absolute Maximum Ratings(Note 4) Note 4: 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” table 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 5: C L = 15 pF , RL = 2 kΩ , TA = 25°C and VCC = 5V. Note 6: C L = 50 pF , RL = 2 kΩ , TA = 25°C and VCC = 5V.

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) Note 7: All typicals are at VCC = 5V, TA = 25°C. Supply Voltage 7V Input Voltage (Reset) 7V Input Voltage (A or B) 5.5V Operating Free Air Temperature Range 0 °C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units V CC 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 5) A to Q A 03 2 M H z B to QB 01 6 fCLK Clock Frequency (Note 6) A to Q A 02 0 M H z B to QB 01 0 tW Pulse Width (Note 5) A 15 B3 0 n s Reset 15 t W Pulse Width (Note 6) A 25 B5 0 n s Reset 25 t REL Reset Release Time (Note 5) 25 ns tREL Reset Release Time (Note 6) 35 ns TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 7) 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 (Note 8) VOutput Voltage V IL = Max, VIH = Min 0.35 0.5 IOL = 4 mA, VCC = Min 0.25 0.4 II Input Current @ Max V CC = Max, VI = 7V Reset 0.1 mAInput Voltage V CC = Max A 0.2 VI = 5.5V B 0.4 IIH HIGH Level V CC = Max, VI = 2.7V Reset 20 µAInput Current A 40 B8 0 IIL LOW Level V CC = Max, VI = 0.4V Reset −0.4 mAInput Current A −2.4 B −3.2 IOS Short Circuit Output Current VCC = Max (Note 9) −20 −100 mA ICC Supply Current V CC = Max (Note 7) 9 15 mA www.sycelectronica.com.ar

Electrical Characteristics (Continued) Note 8: Q A outputs are tested at IOL = Max plus the limit value of IIL for the B input. This permits driving the B input while maintaining full fan-out capability. Note 9: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 10: ICC is measured with all outputs open, both RO inputs grounded following momentary connection to 4.5V and all other inputs grounded. Switching Characteristics at VCC = 5V and TA = 25°C From (Input) R L = 2 kΩ Symbol Parameter To (Output) C L = 15 pF C L = 50 pF Units Min Max Min Max fMAX Maximum Clock A to Q A 32 20 MHz Frequency B to Q B 16 10 tPLH Propagation Delay Time A to QA 16 20 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A to QA 18 24 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time A to QD 48 52 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A to QD 50 60 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time B to QB 16 23 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time B to QB 21 30 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time B to QC 32 37 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time B to QC 35 44 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time B to QD 32 36 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time B to QD 35 44 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time SET-9 to QA, QD 30 35 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time SET-9 to QB, QC 40 48 ns HIGH-to-LOW Level Output tPHL Propagation Delay Time SET-0 to Any Q 40 52 ns HIGH-to-LOW Level Output www.sycelectronica.com.ar

Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Package Number M14A www.sycelectronica.com.ar

DM74LS90 Decade and Binary Counters 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