DM7485 NSC | Alldatasheet

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Y Typical power dissipation 275 mW Y Typical delay (4-bit words) 23 ns Y Alternate Military/Aerospace device (5485) is available. Contact a National Semiconductor Sales Office/Distrib- utor for specifications. Connection Diagram Dual-In-Line Package TL/F/6530–1 Order Number 5485DMQB, 5485FMQB, DM5485J, DM5485W or DM7485N See NS Package Number J16A, N16E or W16A C1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

Absolute Maximum Ratings (Note) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range DM54 and 54 b55§Ct o a125§C DM74 0 §Ct o a70§C Storage Temperature Range b65§Ct o a150§C Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaran- teed. 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 Symbol Parameter DM5485 DM7485 Units Min Nom Max Min Nom Max VCC Supply Voltage 4.5 5 5.5 4.75 5 5.25 V VIH High Level Input Voltage 2 2 V VIL Low Level Input Voltage 0.8 0.8 V IOH High Level Output Current b0.8 b0.8 mA IOL Low Level Output Current 16 16 mA TA Free Air Operating Temperature b55 125 0 70 §C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units(Note 1) VI Input Clamp Voltage V CC e Min, I I eb 12 mA b1.5 V VOH High Level Output V CC e Min, I OH e Max 2.4 VVoltage V IL e Max, V IH e Min VOL Low Level Output V CC e Min, I OL e Max 0.4 VVoltage V IH e Min, V IL e Max II Input Current @ Max V CC e Max, V I e 5.5V 1m AInput Voltage IIH High Level Input V CC e Max A k B4 0 Current V I e 2.4V A l B4 0 mA Others 120 IIL Low Level Input V CC e Max A k B b1.6 Current V I e 0.4V A l B b1.6 mA Others b4.8 IOS Short Circuit V CC e Max DM54 b20 b55 mAOutput Current (Note 2) DM74 b18 b55 ICC Supply Current V CC e Max 55 88 mA(Note 3) Note 1: All typicals are at V CC e 5V, T A e 25§C. Note 2: Not more than one output should be shorted at a time. Note 3: ICC is measured with all outputs open, A e B input grounded and all other inputs at 4.5V.

Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) From To Number of RL e 400X Symbol Parameter Input Output Gate Levels CL e 15 pF Units Min Max tPLH Propagation Delay Time Any A or B A k B 32 6Low-to-High Level Output Data Input A l B ns A e B4 3 5 tPHL Propagation Delay Time Any A or B A k B 33 0High-to-Low Level Output Data Input A l B ns A e B4 3 0 tPLH Propagation Delay Time A k B A l B 1 11 nsLow-to-High Level Output or A e B tPHL Propagation Delay Time A k B A l B 1 17 nsHigh-to-Low Level Output or A e B tPLH Propagation Delay Time A eBA e B 2 20 nsLow-to-High Level Output tPHL Propagation Delay Time A e BA e B 2 17 nsHigh-to-Low Level Output tPLH Propagation Delay Time A l B A k B 1 11 nsLow-to-High Level Output or A e B tPHL Propagation Delay Time A l B A k B 1 17 nsHigh-to-Low Level Output or A e B Function Table Comparing Cascading OutputsInputs Inputs A3, B3 A2, B2 A1, B1 A0, B0 A l BA k BA e BA l BA k BA e B A3 l B3 X X X X X X H L L A3 k B3 X X X X X X L H L A3 e B3 A2 l B2 X X X X X H L L A3 e B3 A2 k B2 X X X X X L H L A3 e B3 A2 e B2 A1 l B1 X X X X H L L A3 e B3 A2 e B2 A1 k B1 X X X X L H L A3 e B3 A2 e B2 A1 e B1 A0 l B0 X X X H L L A3 e B3 A2 e B2 A1 e B1 A0 k B0 X X X L H L A3 e B3 A2 e B2 A1 e B1 A0 e B0 H L L H L L A3 e B3 A2 e B2 A1 e B1 A0 e B0 L H L L H L A3 e B3 A2 e B2 A1 e B1 A0 e B 0 LLHLLH A3 e B3 A2 e B2 A1 e B1 A0 e B 0 XXHLLH A3 e B3 A2 e B2 A1 e B1 A0 e B 0 H HLLLL A3 e B3 A2 e B2 A1 e B1 A0 e B 0 LLLH HL H e High Level, L e Low Level, X e Don’t Care

TL/F/6530–2

Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 5485DMQB or DM5485J 16-Lead Molded Dual-In-Line Package (N) Order Number DM7485N

5485/DM5485/DM7485 4-Bit Magnitude Comparators Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Packge (W) Order Number 5485FMQB or DM5485W LIFE SUPPORT POLICY NATIONAL’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 NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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