74LS85

DM74LS85 FAIRCHILD | Alldatasheet

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Features

■ Typical power dissipation 52 mW ■ Typical delay (4-bit words) 24 ns Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Order Number Package Number Package Description DM74LS85M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74LS85N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

www.fairchildsemi.com 2 DM74LS85 Function Table H = HIGH Level, L = LOW Level, X = Don't Care Logic Diagram Comparing Cascading Outputs Inputs Inputs A3, B3 A2, B2 A1, B1 A0, B0 A > BA < BA = BA > BA < BA = B A3 > B 3 X X X XXXHLL A3 < B 3 X X X XXXLHL A3 = B3 A2 > B 2 X X XXXHLL A3 = B3 A2 < B 2 X X XXXLHL A3 = B3 A2 = B2 A1 > B 1 X XXXHLL A3 = B3 A2 = B2 A1 < B 1 X XXXLHL A3 = B3 A2 = B2 A1 = B1 A0 > B 0 XXXHLL A3 = B3 A2 = B2 A1 = B1 A0 < B 0 XXXLHL A3 = B3 A2 = B2 A1 = B1 A0 = B0 H L L H L L A3 = B3 A2 = B2 A1 = B1 A0 = B0 L H L L H L A3 = B3 A2 = B2 A1 = B1 A0 = B0 L L H L L H A3 = B3 A2 = B2 A1 = B1 A0 = B0 X X H L L H A3 = B3 A2 = B2 A1 = B1 A0 = B 0 H HLLLL A3 = B3 A2 = B2 A1 = B1 A0 = B 0 LLLH HL

3 www.fairchildsemi.com DM74LS85 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

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) Note 2: All typicals are at VCC = 5V, TA = 25°C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 4: ICC is measured with all outputs OPEN, A = B grounded and all other inputs at 4.5V. Supply Voltage 7V Input Voltage 7V 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 TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 2) 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 A < B 0.1 Input Voltage V I = 7V A > B 0.1 mA Others 0.3 IIH HIGH Level V CC = Max A < B2 0 Input Current V I = 2.7V A > B2 0 µA Others 60 IIL LOW Level V CC = Max A < B −0.4 Input Current V I = 0.4V A > B −0.4 mA Others −1.2 IOS Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA ICC Supply Current V CC = Max (Note 4) 10 20 mA

www.fairchildsemi.com 4 DM74LS85 Switching Characteristics at VCC = 5V and TA = 25°C From To Number of R L = 2 kΩ Symbol Parameter Input Output Gate Levels C L = 15 pF C L = 50 pF Units Min Max Min Max tPLH Propagation Delay Time Any A or B A < B, 33 6 4 2 LOW-to-HIGH Level Output Data Input A > Bn s A = B 4 40 40 tPHL Propagation Delay Time Any A or B A < B, 33 0 4 0 HIGH-to-LOW Level Output Data Input A > Bn s A = B 4 30 40 tPLH Propagation Delay Time A < B or A = BA > B 1 22 26 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A < B or A = BA > B 1 17 26 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time A = B A = B 2 20 25 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A = BA = B 2 17 26 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time A > B or A = BA < B 1 22 26 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time A > B or A = BA < B 1 17 26 ns HIGH-to-LOW Level Output

5 www.fairchildsemi.com DM74LS85 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A

www.fairchildsemi.com 6 DM74LS85 4-Bit Magnitude Comparator Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E 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