Fairchild Semiconductor DM74LS151SJX, DM74LS151N, DM74LS151MX, DM74LS151M, DM74LS151CW Datasheet

August 1986

Revised March 2000

DM74LS151

1-of-8 Line Data Selector/Multiplexer

General Description

This data selector/multiplexer contains full on-chip decoding to select the desired data source. The DM74LS151 selects one-of-eight data sources. The DM74LS151 has a strobe input which must be at a low logic level to enable these devices. A high level at the strobe forces the W output HIGH, and the Y output LOW.

The DM74LS151 features complementary W and Y outputs.

Features

■Select one-of-eight data lines

■Performs parallel-to-serial conversion

■Permits multiplexing from N lines to one line

■Also for use as Boolean function generator

■Typical average propagation delay time data input to W output 12.5 ns

■Typical power dissipation 30 mW

Ordering Code:

Order Number	Package Number	Package Description
DM74LS151M	M16A	16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74LS151SJ	M16D	16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74LS151N	N16E	16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram	Truth Table
			Inputs			Outputs
			Select		Strobe	Y	W
		C	B	A	S
		X	X	X	H	L	H
		L	L	L	L	D0
							D0
		L	L	H	L	D1
							D1
		L	H	L	L	D2
							D2
		L	H	H	L	D3
							D3
		H	L	L	L	D4
							D4
		H	L	H	L	D5
							D5
		H	H	L	L	D6
							D6
		H	H	H	L	D7
							D7
	H	= HIGH Level
	L = LOW Level
	X = Don't Care
	D0, D1...D7 = the level of the respective D input

Selector/Multiplexer Data Line 8-of-1 DM74LS151

© 2000 Fairchild Semiconductor Corporation

DS006392

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DM74LS151

Logic Diagrams

See Address Buffers

Address Buffers

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2

Absolute Maximum Ratings(Note 1)

	Supply Voltage	7V	Note 1: The “Absolute Maximum Ratings” are those values beyond which
			the safety of the device cannot be guaranteed. The device should not be
	Input Voltage	7V	operated at these limits. The parametric values defined in the Electrical
			Characteristics tables are not guaranteed at the absolute maximum ratings.
	Operating Free Air Temperature Range	0°C to +70°C
			The “Recommended Operating Conditions” table will define the conditions
	Storage Temperature Range	−65°C to +150°C	for actual device operation.

Recommended Operating Conditions

Symbol	Parameter	Min	Nom	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			8	mA
TA	Free Air Operating Temperature	0		70	°C

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

	Symbol	Parameter	Conditions	Min	Typ	Max	Units
					(Note 2)
	VI	Input Clamp Voltage	VCC = Min, II = −18 mA			−1.5	V
	VOH	HIGH Level	VCC = Min, IOH = Max	2.7	3.4		V
		Output Voltage	VIL = Max, VIH = Min
	VOL	LOW Level	VCC = Min, IOL = Max		0.35	0.5
		Output Voltage	VIL = Max, VIH = Min				V
			IOL = 4 mA, VCC = Min		0.25	0.4
	II	Input Current @ Max Input Voltage	VCC = Max, VI = 7V			0.1	mA
	IIH	HIGH Level Input Current	VCC = Max, VI = 2.7V			20	μA
	IIL	LOW Level Input Current	VCC = Max, VI = 0.4V			−0.4	mA
	IOS	Short Circuit Output Current	VCC = Max (Note 3)	−20		−100	mA
	ICC	Supply Current	VCC = Max (Note 4)		6	10	mA

Note 2: All typicals are at VCC = 5V, TA = 25°C.

Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Note 4: ICC is measured with all outputs OPEN, strobe and data select inputs at 4.5V, and all other inputs OPEN.

DM74LS151

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