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7447 BCD to 7-segment Decoder/Driver (Open Collector)

Features

Single BCD to 7-Segment Decoder with Open Collector Output
Outputs Directly Interface to CMOS, NMOS and TTL
Large Operating Voltage Range
Wide Operating Conditions

In stock

25,00 EGP

SKU: 7447 Categories: 7400-series, Semiconductor ICs

Additional information

7447 BCD to 7-Segment Decoder/Driver Datasheet

Photograph

7447 - 7447 BCD to 7-Segment Decoder/Driver

Features

Single BCD to 7-Segment Decoder with Open Collector Output
Outputs Directly Interface to CMOS, NMOS and TTL
Large Operating Voltage Range
Wide Operating Conditions

Pin Layout

Pin Description

Pin Number	Description
1	BCD B Input
2	BCD C Input
3	Lamp Test
4	RB Output
5	RB Input
6	BCD D Input
7	BCD A Input
8	Ground
9	7-Segment e Output
10	7-Segment d Output
11	7-Segment c Output
12	7-Segment b Output
13	7-Segment a Output
14	7-Segment g Output
15	7-Segment f Output
16	Vcc – Positive Supply

Dimensional Drawing

Technical Data

Absolute Maximum Ratings

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

Recommended Operating Conditions

Symbol	Parameter	Min	Typ	Max	Units
Vcc	Supply Voltage	4.75	5	5.25	V
Vih	HIGH Level Input Voltage	2			V
Vil	LOW Level Input Voltage			0.8	V
Ioh	HIGH Level Output Current			-0.4	mA
Iol	LOW Level Output Current			16	mA
Ta	Free Air Operating Temperature	0		70	°C

Electrical Characteristics

Symbol	Parameter	Conditions	Min	Typ	Max	Units
Vi	Input Clamp Voltage	Vcc=Min Ii=-12mA			-1.5	V
Voh	HIGH Level Output Voltage	Vcc=Min Ioh=MAX Vil=MAX	2.4	3.4		V
Vol	LOW Level Output Voltage	Vcc=Min Iol=MAX Vih=MAX		0.2	0.4	V
Ii	Input Current@MAX Input Voltage	Vcc=Max Vi=5.5V			1	mA
Iih	HIGH Level Input Current	Vcc=Max Vi=2.4V			40	µA
Iil	LOW Level Input Current	Vcc=Max Vi=0.4V			-1.6	mA
Ios	Short Circuit Output Current	Vcc=Max	-18		-55	mA
Icch	Supply Current with Outputs HIGH	Vcc=Max		4	8	mA
Iccl	Supply Current with Outputs LOW	Vcc=Max		12	22	mA

Switching Characteristics at Vcc=5V,Ta=25°C

Symbol	Parameter	Conditions	Min	Typ	Max	Units
tplh	Propagation Delay Time LOW-to-HIGH Level Output	Cl=15pF Rl=400R			22	nS
tphl	Propagation Delay Time HIGH-to-LOW Level Output	Cl=15pF Rl=400R			15	nS

Additional information

Weight	0,0000 g
Package Types:	Package Types:
Function:	Converts 4-bit BCD input to 7-segment display output.
Inputs	BCD Inputs: 4-bit binary inputs (A, B, C, D) to represent decimal digits (0-9). Enable Inputs: LE (Latch Enable): Latches the BCD input data into the internal register when enabled. BI (Blanking Input): Blanks the display if active (low level). LT (Lamp Test): Turns on all segments for testing if active (low level).
Outputs	Seven Segments (a-g): Open-collector outputs connected to the segments of the 7-segment display. Blanking and Lamp Test: Control and test the display.
Operating Voltage:	Typically operates between 4.75V to 5.25V.
Current	Output Drive Current: Can source/sink typically up to 25 mA per segment. Input Current: Low input current for digital inputs.
Open Collector:	Requires external pull-up resistors.
Temperature Range:	Typically operates within 0°C to 70°C or -40°C to 85°C for industrial-grade versions.

Weight	0,0000 g
Package Types:	Package Types:
Function:	Converts 4-bit BCD input to 7-segment display output.
Inputs	BCD Inputs: 4-bit binary inputs (A, B, C, D) to represent decimal digits (0-9). Enable Inputs: LE (Latch Enable): Latches the BCD input data into the internal register when enabled. BI (Blanking Input): Blanks the display if active (low level). LT (Lamp Test): Turns on all segments for testing if active (low level).
Outputs	Seven Segments (a-g): Open-collector outputs connected to the segments of the 7-segment display. Blanking and Lamp Test: Control and test the display.
Operating Voltage:	Typically operates between 4.75V to 5.25V.
Current	Output Drive Current: Can source/sink typically up to 25 mA per segment. Input Current: Low input current for digital inputs.
Open Collector:	Requires external pull-up resistors.
Temperature Range:	Typically operates within 0°C to 70°C or -40°C to 85°C for industrial-grade versions.