DM74145N

DM74145N Datasheet

DM74145 BCD-to-Decimal Decoders/Drivers

Part	Datasheet
DM74145N	DM74145N (pdf)

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DM74145 BCD-to-Decimal Decoders/Drivers DM74145 BCD-to-Decimal Decoders/Drivers These BCD-to-decimal decoders/drivers consist of eight inverters and ten, four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of BCD input logic ensures that all outputs remain OFF for all invalid binary input conditions. These decoders feature high-performance, NPN output transistors designed for use as indicator/relay drivers, or as open-collector logic-circuit drivers. The high-breakdown output transistors are compatible for interfacing with most MOS integrated circuits. s Full decoding of input logic s 80 mA sink-current capability s All outputs are OFF for invalid BCD input conditions Ordering Code: Order Number Package Number Package Description DM74145N N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Connection Diagram Function Table Inputs Outputs DCBA0 1 2 3 4 5 6 7 8 9 4 LHL 8 HL L V HHL H = HIGH Level OFF L = LOW Level ON 2001 Fairchild Semiconductor Corporation DS006544 DM74145 Logic Diagram DM74145 Absolute Maximum Ratings Note 1 Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.5V 0°C to +70°C −65°C to +150°C 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 VCC VIH VIL VOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Current Free Air Operating Temperature Electrical Characteristics over recommended operating free air temperature range unless otherwise noted Parameter Conditions Input Clamp Voltage VCC = Min, II = −12 mA ICEX HIGH Level VCC = Min, VOH = Max Output Current VIL = Max, VIH = Min LOW Level VCC = Min, IOL = Max Output Voltage VIH = Min, VIL = Max

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DM74145 BCD-to-Decimal Decoders/Drivers

DM74145 BCD-to-Decimal Decoders/Drivers

These BCD-to-decimal decoders/drivers consist of eight inverters and ten, four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of BCD input logic ensures that all outputs remain OFF for all invalid binary input conditions. These decoders feature high-performance, NPN output transistors designed for use as indicator/relay drivers, or as open-collector logic-circuit drivers. The high-breakdown output transistors are compatible for interfacing with most MOS integrated circuits.
s Full decoding of input logic s 80 mA sink-current capability s All outputs are OFF for invalid BCD input conditions
Ordering Code:

Order Number Package Number

Package Description

DM74145N

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Connection Diagram

Function Table

Inputs

Outputs

DCBA0 1 2 3 4 5 6 7 8 9
4 LHL
8 HL L

V HHL

H = HIGH Level OFF L = LOW Level ON
2001 Fairchild Semiconductor Corporation DS006544

DM74145

Logic Diagram

DM74145

Absolute Maximum Ratings Note 1

Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range
7V 5.5V 0°C to +70°C −65°C to +150°C

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

VCC VIH VIL VOH IOL TA

Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Current Free Air Operating Temperature

Electrical Characteristics
over recommended operating free air temperature range unless otherwise noted

Parameter

Conditions

Input Clamp Voltage

VCC = Min, II = −12 mA

ICEX

HIGH Level

VCC = Min, VOH = Max

Output Current

VIL = Max, VIH = Min

LOW Level

VCC = Min, IOL = Max

Output Voltage

VIH = Min, VIL = Max

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Datasheet ID: DM74145N 513618