5447

DM7446A NSC | Alldatasheet

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Features

Y All circuit types feature lamp intensity modulation capability Y Open-collector outputs drive indicators directly Y Lamp-test provision Y Leading/trailing zero suppression Connection Diagram Dual-In-Line Package TL/F/6518–1 Order Number DM5447AJ, DM7446AN or DM7447AN See NS Package Number J16A or N16E 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 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 DM7446A Units Min Nom Max VCC Supply Voltage 4.75 5 5.25 V VIH High Level Input Voltage 2 V VIL Low Level Input Voltage 0.8 V VOH High Level Output Voltage (a thru g) 30 V IOH High Level Output Current (BI/RBO) b0.2 mA IOL Low Level Output Current (a thru g) 40 mA IOL Low Level Output Current (BI/RBO) 8 mA TA Free Air Operating Temperature 0 70 §C ’46A 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 2.4 3.7 VVoltage (BI/RBO) I OH e Max ICEX High Level Output V CC e Max, V O e 30V 250 mACurrent (a thru g) V IL e Max, V IH e Min VOL Low Level Output V CC e Min, I OL e Max 0.3 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 (Except BI/RBO) IIH High Level Input V CC e Max, V I e 2.4V 40 mACurrent (Except BI/RBO) IIL Low Level Input V CC e Max BI/RBO b4 mACurrent V I e 0.4V Others b1.6 IOS Short Circuit V CC e Max (BI/RBO) b4m AOutput Current ICC Supply Current V CC e Max 60 103 mA(Note 2) Note 1: All typicals are at V CC e 5V, T A e 25§C. Note 2: ICC is measured with all outputs open and all inputs at 4.5V.

’46A Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L e 15 pF 100 nsLow to High Level Output R L e 120X tPHL Propagation Delay Time 100 nsHigh to Low Level Output Recommended Operating Conditions Symbol Parameter DM5447A DM7447A 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 VOH High Level Output 15 15 VVoltage (a thru g) IOH High Level Output b0.2 b0.2 mACurrent (BI/RBO) IOL Low Level Output 40 40 mACurrent (a thru g) IOL Low Level Output 88 m ACurrent (BI/RBO) TA Free Air Operating Temperature b55 125 0 70 §C ’47A 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 2.4 3.7 VVoltage (BI/RBO) I OH e Max ICEX High Level Output V CC e Max, V O e 15V 250 mACurrent (a thru g) V IL e Max, V IH e Min VOL Low Level Output V CC e Min, I OL e Max 0.3 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 Current V CC e Max, V I e 2.4V 40 mA IIL Low Level Input V CC e Max BI/RBO b4 mACurrent V I e 0.4V Others b1.6 IOS Short Circuit V CC e Max (BI/RBO) b4m AOutput Current ICC Supply Current V CC e Max DM54 60 85 mA(Note 2) DM74 60 103 Note 1: All typicals are at V CC e 5V, T A e 25§C. Note 2: ICC is measured with all outputs open and all inputs at 4.5V.

’47A Switching Characteristics at V CC e 5V and T A e 25§C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L e 15 pF 100 nsLow to High Level Output R L e 120X tPHL Propagation Delay Time 100 nsHigh to Low Level Output Function Table 46A, 47A Decimal or Inputs BI/RBO Outputs NoteFunction LT RBI D C B A (Note 1) abcde fg

0 H H LLLL H LLLLLLH

1 H X LLLH H HLLHHHH

2 H X LLHL H LLHLLHL

3 H X LLH H H LLLLH HL

4 H X LHLL H HLLHHLL

5 H X LHLH H LHLLHLL

6 H X LHHL H HHL L L L L

7 H X LHHH H L L LHHHH (2)

8 H X HLLL H LLLLLLL

9 H X HLLH H LLLH HLL

B I X X XXXX L HHHHHHH ( 3 ) R B I H L L L L L L HHHHHHH ( 4 ) L T L X XXXX H LLLLLLL ( 5 ) Note 1: BI/RBO is a wire-AND logic serving as blanking input (BI) and/or ripple-blanking output (RBO). Note 2: The blanking input (BI) must be open or held at a high logic level when output functions 0 through 15 are desired. The ripple-blanking input (RBI) must be open or high if blanking of a decimal zero is not desired. Note 3: When a low logic level is applied directly to the blanking input (BI), all segment outputs are high regardless of the level of any other input. Note 4: When ripple-blanking input (RBI) and inputs A, B, C, and D are at a low level with the lamp test input high, all segment outputs go H and the ripple- blanking output (RBO) goes to a low level (response condition). Note 5: When the blanking input/ripple-blanking output (BI/RBO) is open or held high and a low is applied to the lamp-test input, all segment outputs are L . H e High level, L e Low level, X e Don’t Care

TL/F/6518–2 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number DM5447AJ

DM7446A, DM5447A/DM7447A BCD to 7-Segment Decoders/Drivers Physical Dimensions inches (millimeters) (Continued) 16-Lead Molded Dual-In-Line Package (N) Order Number DM7446AN or DM7447AN 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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a49) 0-180-530 85 86 13th Floor, Straight Block, Tel: 81-043-299-2309 Arlington, TX 76017 Email: cnjwge @ tevm2.nsc.com Ocean Centre, 5 Canton Rd. Fax: 81-043-299-2408 Tel: 1(800) 272-9959 Deutsch Tel: ( a49) 0-180-530 85 85 Tsimshatsui, Kowloon Fax: 1(800) 737-7018 English Tel: ( a49) 0-180-532 78 32 Hong Kong Fran3ais Tel: ( a49) 0-180-532 93 58 Tel: (852) 2737-1600 Italiano Tel: ( a49) 0-180-534 16 80 Fax: (852) 2736-9960 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.