DM7446

DM7446A FAIRCHILD | Alldatasheet

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■ All circuit types feature lamp intensity modulation capa- bility ■ Open-collector outputs drive indicators directly ■ Lamp-test provision ■ Leading/trailing zero suppression Ordering Code: Connection Diagram Order Number Package Number Package Description DM7446AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM7446AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

www.fairchildsemi.com 2 DM7446A, DM7447A Function Table H = HIGH level, L = LOW level, X = Don't Care 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 rip- ple-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 Logic Diagram Decimal or Inputs BI/RBO Outputs NoteFunction LT RBI D C B A (Note 1) a b c d e f g

0 H HLLLL H LLLLLLH

1 H XLLLH H HLLH H H H

2 HXLLHL H LLHLLHL

3 HXLLHH H LLLLHHL

4 HXLHLL H HLLHHLL

5 HXLHLH H LHLLHLL

6 H XLH HL H H HLLLLL

7 HXLHHH H L L LHHHH ( N o t e 2 )

8 H XHLLL H LLLLLLL

9 H XHLLH H LLLH HLL

B I XXXXXX L HHHHHHH ( N o t e 3 ) R B I HL L L L L L HHHHHHH ( N o t e 4 ) L T LXXXXX H LLLLLLL ( N o t e 5 )

3 www.fairchildsemi.com DM7446A, DM7447A Absolute Maximum Ratings(Note 6) Note 6: 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 Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units DM7446A 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 VOH HIGH Level Output Voltage (a thru g) 30 V IOH HIGH Level Output Current (BI/RBO) −0.2 µA 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 DM7447A 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) 15 V IOH HIGH Level Output Current (BI/RBO) −0.2 µA 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

www.fairchildsemi.com 4 DM7446A, DM7447A over recommended operating free air temperature range (unless otherwise noted) Note 7: All typicals are at VCC = 5V, TA = 25°C. Note 8: ICC is measured with all outputs OPEN and all inputs at 4.5V. DM7446A Switching Characteristics at VCC = 5V and TA = 25°C Symbol Parameter Conditions Min Typ Max Units (Note 7) VI Input Clamp Voltage V CC = Min, II = −12 mA −1.5 V VOH HIGH Level Output V CC = Min 2.4 3.7 V Voltage (BI/RBO) I OH = Max ICEX HIGH Level Output V CC = Max, VO = 30V 250 µA Current (a thru g) V IL = Max, VIH = Min VOL LOW Level V CC = Min, IOL = Max 0.3 0.4 V Output Voltage V IH = Min, VIL = Max II Input Current @ Max V CC = Max, VI = 5.5V 1m A Input Voltage (Except BI/RBO) IIH HIGH Level Input V CC = Max, VI = 2.4V 40 µA Current (Except BI/RBO) IIL LOW Level Input V CC = Max BI/RBO −4 mA Current V I = 0.4V Others −1.6 IOS Short Circuit V CC = Max −4m A Output Current (BI/RBO) ICC Supply Current V CC = Max 60 103 mA (Note 8) Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L = 15 pF 100 ns LOW-to-HIGH Level Output R L = 120Ω tPHL Propagation Delay Time 100 ns HIGH-to-LOW Level Output

5 www.fairchildsemi.com DM7446A, DM7447A over recommended operating free air temperature range (unless otherwise noted) Note 9: All typicals are at VCC = 5V, TA = 25°C. Note 10: ICC is measured with all outputs OPEN and all inputs at 4.5V. DM7447A Switching Characteristics at VCC = 5V and TA = 25°C Symbol Parameter Conditions Min Typ Max Units (Note 9) VI Input Clamp Voltage V CC = Min, II = −12 mA −1.5 V VOH HIGH Level Output V CC = Min 2.4 3.7 V Voltage (BI/RBO) I OH = Max ICEX HIGH Level Output V CC = Max, VO = 15V 250 µA Current (a thru g) V IL = Max, VIH = Min VOL LOW Level Output V CC = Min, IOL = Max 0.3 0.4 V Voltage V IH = Min, VIL = Max II Input Current @ Max V CC = Max, VI = 5.5V 1 mA Input Voltage IIH HIGH Level Input Current V CC = Max, VI = 2.4V 40 µA IIL LOW Level Input V CC = Max BI/RBO −4 mA Current V I = 0.4V Others −1.6 IOS Short Circuit V CC = Max −4m A Output Current (BI/RBO) ICC Supply Current V CC = Max 60 103 mA (Note 10) Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L = 15 pF 100 ns LOW-to-HIGH Level Output R L = 120Ω tPHL Propagation Delay Time 100 ns HIGH-to-LOW Level Output

www.fairchildsemi.com 6 DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers 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