DM74ALS541WMX - Fairchild Semiconductor

October 1986

Revised February 2000

DM74ALS541 Octal Buffer and Line Driver with 3- STATE Outputs

DM74ALS541

Octal Buffer and Line Driver with 3-STATE Outputs

General Descript ion

This octal buffer and line driver is designed to have the per-

formance 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 bo ard layout. The 3-STATE control gate is a 2-inp ut

NOR such that if eith er G1 or G 2 is HIGH, a ll eig ht o utp uts

are in the high impedance state.

Features

■Advanced oxide-isolated ion-implanted Schottky TTL

process

■Switching perform ance is guarant eed ov er full tem pera-

ture and VCC supply range

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

outputs)

■P-N-P Inputs reduce DC loading

Ordering Code:

Devices also available in Tape and R eel. Speci fy by append ing the suffix let t er “X” to the o rdering c ode.

Connection Diagram Function Table

H = HIGH Lo gic Level

L = LOW Lo gic Level

X = Don't Care (Eit her LOW or H I GH Logic Lev el)

Hi-Z = High Impedance (OFF) State

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

Input Output

G1G2A Y

H X X Hi-Z

X H X Hi-Z

LLLL

LLHH

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DM74ALS541

Absolute Maximum Ratings(Note 1)

Note 1: T he “Absol ute Maximum Ratings” are those values be yond which

the saf ety of the device cannot be guarante ed. The device s hould not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not gua rant eed at the absolute maximum rati n gs.

The “Re comme nded Operat ing Co ndition s” table will define the cond itions

for actu al device operation.

Recommended Operating Conditions

Electrical Characteristics

over recommended free air temperature range

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

Storag e Temperature Range −65°C to +150°C

Typical θJA

N Package 58.5°C/W

M Package 77.5°C/W

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

TAFree Air Operating Temperature 0 70 °C

Symbol Parameter Test Conditions Min Typ Max Units

VIK Input Clamp Voltage VCC = Min, I I = −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

IIInput Current at Maximum VCC = Max, VI = 7V 100 µA

Input Voltage

IIH HIGH Level Input Curre nt 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

IOOutput 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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DM74ALS541

Switching Characteristics

over recommended operating free air temperature range

Symbol Parameter Conditions From (Input) Min Max Units

To (Output)

tPLH Propagation Delay Time VCC = 4.5V to 5.5V, A to Y 4 14 ns

LOW-to-HIGH Level Output R1 = R2 = 500Ω,

tPHL Propagation Delay Time CL = 50 pF A to Y 2 10 ns

HIGH-to-LOW Level Output

tPZH Output Enable Time G to Y 5 15 ns

to HIGH Level Output

tPZL Output Enable Time G to Y 8 20 ns

to LOW Level Output

tPHZ Output Disable Time G to Y 1 10 ns

from HIGH Level Output

tPLZ Output Disable Time G to Y 2 12 ns

from LOW Level Output

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DM74ALS541

Physical Dimensions inches (millimeters) unless otherwise noted

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

Package Number M20B

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DM74ALS541

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

Package Number M20D

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DM74ALS541 Octal Buffer and Line Driver with 3-STATE Outputs

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Package Number N20A

Fairchild does no t assume any responsibility for use of any circuitry describ ed, no circuit patent licenses are implied a nd

Fairchild reserves the right at any time without notice to change said circuitry and specifications.

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FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD

SEMICONDUCTOR CORPORATION. As used herein:

1. Life suppor t de vices o r systems a re devices or syste ms

which, (a) are intended for surgical implant into the

body, or (b) support or sustain life, and (c) whose failure

to perform when properly used in accordance with

instructions for use provided in the labeling, can be rea-

sonably expected to result in a significant injury to the

user.

2. A critical compon ent i n any compon ent of a life su pport

device or system whose failure to perform can be rea-

sonabl y ex pect ed to ca use the fa i lure of the life su pp ort

device or system, or to affect its safety or effectiveness.