DM74LS83A FAIRCHILD | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Features

■ Full-carry look-ahead across the four bits ■ Systems achieve partial look-ahead performance with the economy of ripple carry ■ Typical add times Two 8-bit words 25 ns Two 16-bit words 45 ns ■ Typical power dissipation per 4-bit adder 95 mW Ordering Code: Connection Diagram Order Number Package Number Package Description DM74LS83AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

www.fairchildsemi.com 2 DM74LS83A Truth Table H = HIGH Level, L = LOW Level Input conditions at A1, B1, A2, B2, and C0 are used to determine outputs ∑ 1 and ∑ 2 and the value of the internal carry C2. The values at C2, A3, B3, A4, and B4 are then used to determine outputs ∑ 3, ∑ 4, and C4. Logic Diagram

3 www.fairchildsemi.com DM74LS83A 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: ICC1 is measured with all outputs open, all B inputs LOW and all other inputs at 4.5V, or all inputs at 4.5V. Note 5: ICC2 is measured with all outputs OPEN and all inputs grounded. 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 or B 0.2 mA Input Voltage V I = 7V C0 0.1 IIH HIGH Level V CC = Max A or B 40 µA Input Current V I = 2.7V C0 20 IIL LOW Level V CC = Max A or B −0.8 mA Input Current V I = 0.4V C0 −0.4 IOS Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA ICC1 Supply Current V CC = Max (Note 4) 19 34 mA ICC2 Supply Current V CC = Max (Note 5) 22 39 mA

www.fairchildsemi.com 4 DM74LS83A 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 tPLH Propagation Delay Time C0 to ∑ 1 or ∑ 22 4 2 8 n s LOW-to-HIGH Level Output tPHL Propagation Delay Time C0 to ∑ 1 or ∑ 22 4 3 0 n s HIGH-to-LOW Level Output tPLH Propagation Delay Time C0 to ∑ 32 4 2 8 n s LOW-to-HIGH Level Output tPHL Propagation Delay Time C0 to ∑ 32 4 3 0 n s HIGH-to-LOW Level Output tPLH Propagation Delay Time C0 to ∑ 42 4 2 8 n s LOW-to-HIGH Level Output tPHL Propagation Delay Time C0 to ∑ 42 4 3 0 n s HIGH-to-LOW Level Output tPLH Propagation Delay Time Ai, Bi to ∑ i 24 28 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Ai, Bi to ∑ i 24 30 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time C0 to C4 17 24 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time C0 to C4 17 25 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Ai, Bi to C4 17 24 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Ai, Bi to C4 17 26 ns HIGH-to-LOW Level Output

5 www.fairchildsemi.com DM74LS83A 4-Bit Binary Adder with Fast Carry Physical Dimensions inches (millimeters) unless otherwise noted 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