74LS374

DM74LS373 FAIRCHILD | Alldatasheet

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■ Choice of 8 latches or 8 D-type flip-flops in a single package ■ 3-STATE bus-driving outputs ■ Full parallel-access for loading ■ Buffered control inputs ■ P-N-P inputs reduce D-C loading on data lines Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Order Number Package Number Package Description DM74LS373WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74LS373SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74LS373N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74LS374WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74LS374SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide IDM29901NC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

www.fairchildsemi.com 2 DM74LS373 • DM74LS374 Connection Diagrams DM74LS373 DM74LS374 Function Tables DM74LS373 DM74LS374 H = HIGH Level (Steady State) L = LOW Level (Steady State) X = Don't Care Z = High Impedance State ↑ = Transition from LOW-to-HIGH level Q0 = The level of the output before steady-state input conditions were established. Logic Diagrams DM74LS373 Transparent Latches DM74LS374 Positive-Edge-Triggered Flip-Flops Output Enable D OutputControl G LH H H LH L L LL X Q HX X Z Output Clock D OutputControl L ↑ HH L ↑ LL LL X Q 0 HX X Z

3 www.fairchildsemi.com DM74LS373 • DM74LS374 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. DM74LS373 Recommended Operating Conditions Note 2: The symbol (↓) indicates the falling edge of the clock pulse is used for reference. Note 3: TA = 25°C and VCC = 5V. over recommended operating free air temperature range (unless otherwise noted) Note 4: All typicals are at VCC = 5V, TA = 25°C. Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second. Supply Voltage 7V Input Voltage 7V Storage Temperature Range −65°C to +150°C Operating Free Air Temperature Range 0°C to +70°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 −2.6 mA IOL LOW Level Output Current 24 mA tW Pulse Width Enable HIGH 15 ns(Note 3) Enable LOW 15 tSU Data Setup Time (Note 2) (Note 3) 5 ↓ ns tH Data Hold Time (Note 2) (Note 3) 20 ↓ ns TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 4) VI Input Clamp Voltage V CC = Min, II = −18 mA −1.5 V VOH HIGH Level V CC = Min, IOH = Max 2.4 3.1 V Output Voltage V IL = Max, VIH = Min VOL LOW Level V CC = Min, IOL = Max Output Voltage V IL = Max, VIH = Min 0.35 0.5 V IOL = 12 mA, VCC = Min 0.4 II Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA IIH HIGH Level Input Current V CC = Max, VI = 2.7V 20 µA IIL LOW Level Input Current V CC = Max, VI = 0.4V −0.4 mA IOZH Off-State Output Current with V CC = Max, VO = 2.7V 20 µA HIGH Level Output Voltage Applied VIH = Min, VIL = Max IOZL Off-State Output Current with V CC = Max, VO = 0.4V −20 µA LOW Level Output Voltage Applied VIH = Min, VIL = Max IOS Short Circuit Output Current V CC = Max (Note 5) −50 −225 mA ICC Supply Current V CC = Max, OC = 4.5V, 24 40 mA D n, Enable = GND

www.fairchildsemi.com 4 DM74LS373 • DM74LS374 DM74LS373 Switching Characteristics at VCC = 5V and TA = 25°C Note 6: C L = 5 pF. DM74LS374 Recommended Operating Conditions Note 7: The symbol (↑) indicates the rising edge of the clock pulse is used for reference. Note 8: TA = 25°C and VCC = 5V. R L = 667Ω Symbol Parameter From (Input) C L = 45 pF C L = 150 pF Units To (Output) Min Max Min Max tPLH Propagation Delay Time Data to Q 18 26 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Data to Q 18 27 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Enable to Q 30 38 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Enable to Q 30 36 ns HIGH-to-LOW Level Output tPZH Output Enable Time Output Control to Any Q 28 36 ns to HIGH Level Output tPZL Output Enable Time Output Control to Any Q 36 50 ns to LOW Level Output tPHZ Output Disable Time Output Control to Any Q 20 ns from HIGH Level Output (Note 6) tPLZ Output Disable Time Output Control to Any Q 25 ns from LOW Level Output (Note 6) 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 −2.6 mA IOL LOW Level Output Current 24 mA tW Pulse Width Clock HIGH 15 ns(Note 8) Clock LOW 15 tSU Data Setup Time (Note 7) (Note 8) 20 ↑ ns tH Data Hold Time (Note 7) (Note 8) 1 ↑ ns TA Free Air Operating Temperature 0 70 °C

5 www.fairchildsemi.com DM74LS373 • DM74LS374 over recommended operating free air temperature range (unless otherwise noted) Note 9: All typicals are at VCC = 5V, TA = 25°C. Note 10: Not more than one output should be shorted at a time, and the duration should not exceed one second. DM74LS374 Switching Characteristics at VCC = 5V and TA = 25°C Note 11: C L = 5 pF. Symbol Parameter Conditions Min Typ Max Units (Note 9) VI Input Clamp Voltage V CC = Min, II = −18 mA −1.5 V VOH HIGH Level V CC = Min, IOH = Max 2.4 3.1 V Output Voltage V IL = Max, VIH = Min VOL LOW Level V CC = Min, IOL = Max 0.35 0.5 VOutput Voltage V IL = Max, VIH = Min IOL = 12 mA, VCC = Min 0.25 0.4 II Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA IIH HIGH Level Input Current V CC = Max, VI = 2.7V 20 µA IIL LOW Level Input Current V CC = Max, VI = 0.4V −0.4 mA IOZH Off-State Output Current with V CC = Max, VO = 2.7V 20 µA HIGH Level Output Voltage Applied VIH = Min, VIL = Max IOZL Off-State Output Current with V CC = Max, VO = 0.4V −20 µA LOW Level Output Voltage Applied VIH = Min, VIL = Max IOS Short Circuit Output Current V CC = Max (Note 10) −50 −225 mA ICC Supply Current V CC = Max, Dn = GND, OC = 4.5V 27 45 mA R L = 667Ω Symbol Parameter C L = 45 pF C L = 150 pF Units M i nM a xM i nM a x fMAX Maximum Clock Frequency 35 20 MHz tPLH Propagation Delay Time 28 32 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time 28 38 ns HIGH-to-LOW Level Output tPZH Output Enable Time 28 44 ns to HIGH Level Output tPZL Output Enable Time 28 44 ns to LOW Level Output tPHZ Output Disable Time 20 ns from HIGH Level Output (Note 11) tPLZ Output Disable Time 25 ns from LOW Level Output (Note 11)

www.fairchildsemi.com 6 DM74LS373 • DM74LS374 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B

7 www.fairchildsemi.com DM74LS373 • DM74LS374 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D

www.fairchildsemi.com 8 DM74LS373 • DM74LS374 3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com