Fairchild Semiconductor DM74ALS541WMX, DM74ALS541WM, DM74ALS541SJX, DM74ALS541SJ, DM74ALS541N Datasheet

October 1986

Revised February 2000

DM74ALS541

Octal Buffer and Line Driver with 3-STATE Outputs

General Description

This octal buffer and line driver is designed to have the performance of the DM74ALS240A series and, at the same time, offer a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly enhances circuit board layout. The 3-STATE control gate is a 2-input NOR such that if either G1 or G2 is HIGH, all eight outputs are in the high impedance state.

Features

■Advanced oxide-isolated ion-implanted Schottky TTL process

■Switching performance is guaranteed over full temperature and VCC supply range

■Data flow-thru pinout (all inputs on opposite side from outputs)

■P-N-P Inputs reduce DC loading

Ordering Code:

Order Number	Package Number	Package Description
DM74ALS541WM	M20B	20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74ALS541SJ	M20D	20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74ALS541N	N20A	20-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	Function Table
						Input				Output
			G1			G2			A	Y
			H				X		X	Hi-Z
			X				H		X	Hi-Z
			L				L		L	L
			L				L		H	H
	H
		= HIGH Logic Level
	L = LOW Logic Level
	X = Don't Care (Either LOW or HIGH Logic Level)
	Hi-Z = High Impedance (OFF) State

Outputs STATE-3 with Driver Line and Buffer Octal DM74ALS541

© 2000 Fairchild Semiconductor Corporation

DS009171

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DM74ALS541

Absolute Maximum Ratings(Note 1)

Supply Voltage	7V
Input Voltage: Control Inputs	7V
Voltage Applied to a Disabled
3-STATE Output	5.5V
Operating Free-Air Temperature Range	0°C to +70°C
Storage Temperature Range	−65°C to +150°C
Typical θJA
N Package	58.5°C/W
M Package	77.5°C/W

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

Symbol	Parameter	Min	Nom	Max	Units
VCC	Supply Voltage	4.5	5	5.5	V
VIH	HIGH Level Input Voltage	2			V
VIL	LOW Level Input Voltage			0.8	V
IOH	HIGH Level Output Current			−15	mA
IOL	LOW Level Output Current			24	mA
TA	Free Air Operating Temperature	0		70	°C

Electrical Characteristics

over recommended free air temperature range

Symbol	Parameter	Test Conditions			Min	Typ	Max	Units
VIK	Input Clamp Voltage	VCC = Min, II = −18 mA					−1.2	V
VOH	HIGH Level	VCC = 4.5V to 5.5V		IOH = −0.4 mA	VCC − 2
	Output Voltage	VCC = Min		IOH = −3 mA	2.4	3.2		V
				IOH = Max	2
VOL	LOW Level	VCC = Min		IOL = 12 mA		0.25	0.4	mA
	Output Voltage			IOL = 24 mA		0.35	0.5
II	Input Current at Maximum	VCC = Max, VI = 7V					100	μA
	Input Voltage
IIH	HIGH Level Input Current	VCC = Max, VI = 2.7V					20	μA
IIL	LOW Level Input Current	VCC = Max, VI = 0.4V					−100	μA
IOZH	HIGH Level 3-STATE	VCC = Max, VO = 2.7V					20	μA
	Output Current
IOZL	LOW Level 3-STATE	VCC = Max, VO = 0.4V					−20	μA
	Output Current
IO	Output Drive Current	VCC = Max, VO = 2.25V			−30		−112	mA
ICC	Supply Current	VCC = Max		Outputs HIGH		6	14
				Outputs LOW		15	25	mA
				Outputs Disabled		13.5	22

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