DM7442AN

DM7442AN Datasheet


DM7442A BCD to Decimal Decoder

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DM7442AN DM7442AN DM7442AN (pdf)
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DM7442A BCD to Decimal Decoder

DM7442A BCD to Decimal Decoder

These BCD-to-decimal decoders 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 input logic ensures that all outputs remain off for all invalid input conditions.
s Diode clamped inputs s Also for application as 4-line-to-16-line decoders;
3-line-to-8-line decoders s All outputs are high for invalid input conditions s Typical power dissipation 140 mW s Typical propagation delay 17 ns
Ordering Code:

Order Number Package Number

Package Description

DM7442AN

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

Connection Diagram
2001 Fairchild Semiconductor Corporation DS006516

DM7442A

Function Table

BCD Input

Decimal Output

DCBA 0 1 2 3 4 5 6 7 8 9
1 L LHH
4 LH L LHHHH
6 LHHH
7 LHH

VHH L

L HHH L

H = HIGH Level L = LOW Level

Logic Diagram

DM7442A

Absolute Maximum Ratings Note 1

Supply Voltage

Input Voltage
5.5V

Operating Free Air Temperature Range 0°C to +70°C

Storage Temperature Range
−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 IOH IOL TA

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

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

Parameter

Conditions

Nom 5

Input Clamp Voltage

VCC = Min, II = −12 mA

HIGH Level
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Datasheet ID: DM7442AN 513624