Datasheet 74AC241SCX, 74AC241SC, 74AC241PC, 74AC241MTCX, 74AC241MTC Datasheet (Fairchild Semiconductor)

© 1999 Fairchild Semiconductor Corporation DS009942 www.fairchildsemi.com

November 1988
Revised November 1999

74AC241 • 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs

74AC241 • 74ACT241
Octal Buffer/Line Driv e r wit h 3- S TATE Outputs

General Description

The AC/ACT241 is an octal buffe r and line dr iver de signed
to be employed as a memory addre ss driver, clock driver
and bus-oriented transmitter or receiver which provides
improved PC board densi ty.

Features

■ ICC and IOZ reduced by 5 0%

■ Non-inverting 3-STATE outputs drive bus lines or buffer

memory address registers

■ Outputs source/sink 24 mA

■ ACT241 has TTL-compatible inputs

Ordering Code:

Device also avialable in Tape and Reel. Specify by appending su ffix le tter “X” to the ordering code.

Logic Symbol

Connection Diagram

Pin Descriptions

Tru th Tables

H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance

FACT is a trademark of Fairchild Semiconductor Corporation.

Order Number Package Number Package Description

74AC241SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
74AC241SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74AC241MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74AC241PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
74ACT241SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
74ACT241SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74ACT241MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74ACT241PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Pin Names Description

OE

1

3-STATE Output Enable Input

OE

2

3-STA T E Output Enable Input (Active HIGH)

I

0–I7

Inputs

O

0–O7

Outputs

Inputs Outputs

OE

1

I

n

(Pins 12, 14, 16, 18)

LL L
LH H
HX Z

Inputs Outputs

OE

2

I

n

(Pins 3, 5, 7, 9)

HL L
HH H
LX Z

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74AC241 • 74ACT241

Absolute Maximum Ratings(Note 1) Recommended Operating

Conditions

Note 1: Absolute maximum ratings are those values beyond which damage

to the device may occur. The databook specifications should be met, with­out exception, to ensure that the system design is reliable over its power
supply, temperature, and ou tput/inp ut loadi ng varia bles. Fairchild does no t
recommend operat ion of FACT circuits outside da t abook specifications.

DC Electrical Characteristics for AC

Note 2: All outputs loaded; thresholds on input assoc iat ed with output under tes t.
Note 3: Maximum test duratio n 2. 0 ms, one output loaded at a time.
Note 4: I

IN

and ICC @ 3.0V are guaranteed to be less than or equa l to th e respective limit @ 5.5V VCC.

Supply Voltage (VCC) −0.5V to +7.0V
DC Input Diode Current (I

IK

)

V

I

= −0.5V −20 mA

V

I

= VCC + 0.5V +20 mA

DC Input Voltage (V

I

) −0.5V to VCC + 0.5V

DC Output Diode Current (I

OK

)

V

O

= −0.5V −20 mA

V

O

= VCC + 0.5V +20 mA

DC Output Voltage (V

O

) −0.5V to VCC + 0.5V

DC Output Source

or Sink Current (I

O

) ±50 mA

DC V

CC

or Ground Current

per Output Pin (I

CC

or I

GND

) ±50 mA

Storage Temperature (T

STG

) −65°C to +150°C

Junction Temperature (T

J

)

PDIP 140°C

Supply Voltage (V

CC

)
AC 2.0V to 6.0V
ACT 4.5V to 5.5V

Input Voltage (V

I

) 0V to V

CC

Output Voltage (VO) 0V to V

CC

Operating Temperature (TA) −40°C to +85°C
Minimum Input Edge Rate (∆V/∆t)

AC Devices
V

IN

from 30% to 70% of V

CC

VCC @ 3.3V, 4.5V, 5.5V 125 mV/ns

Minimum Input Edge Rate (∆V/∆t)

ACT Devices
V

IN

from 0.8V to 2.0V

V

CC

@ 4.5V, 5.5V 125 mV/ns

Symbol Parameter

VCC(V)

T

A

= +25°CTA = −40°C to +85°C

Units Conditions

Typ Guaranteed Limits

V

IH

Minimum HIGH Level 3.0 1.5 2.1 2.1 V

OUT

= 0.1V

Input Voltage 4.5 2.25 3.15 3.15 V or VCC − 0.1V

5.5 2.75 3.85 3.85

V

IL

Maximum LOW Level 3.0 1.5 0.9 0.9 V

OUT

= 0.1V

Input Voltage 4.5 2.25 1.35 1.35 V or VCC − 0.1V

5.5 2.75 1.65 1.65

V

OH

Minimum HIGH Level 3.0 2.99 2.9 2.9
Output Voltage 4.5 4.49 4.4 4.4 V I

OUT

= −50 µA

5.5 5.49 5.4 5.4
VIN = VIL or V

IH

3.0 2.56 2.46 IOH = −12 mA

4.5 3.86 3.76 V I

OH

= −24 mA

5.5 4.86 4.76 I

OH

= −24 mA (Note 2)

V

OL

Maximum LOW Level 3.0 0.002 0.1 0.1
Output Voltage 4.5 0.001 0.1 0.1 V I

OUT

= 50 µA

5.5 0.001 0.1 0.1
VIN = VIL or V

IH

3.0 0.36 0.44 IOL = 12 mA

4.5 0.36 0.44 V IOL = 24 mA

5.5 0.36 0.44 IOL = 24 mA (Note 2)

IN (Note 4) Maximum Input Leakage Currentt 5.5 ±0.1 ±1.0 µAVI = VCC, GND
I

OZ

Maximum 3-STATE VI (OE) = VIL, V

IH

Leakage Current 5.5 ±0.25 ± 2.5 µAVI = VCC, GND

VO = VCC, GND

I

OLD

Minimum Dynamic 5.5 75 mA V

OLD

= 1.65V Max

I

OHD

Output Current (Note 3) 5.5 −75 mA V

OHD

= 3.85V Min

I

CC

(Note 4) Maximum Quiescent Supply Current 5.5 4.0 40.0 µAVIN = VCC or GND

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74AC241 • 74ACT241

DC Electrical Characteristics for ACT

Note 5: All outputs loaded; thres holds on input associate d w it h output under test.
Note 6: Maximum test duration 2.0 ms, one output loaded at a time.

AC Electrical Characteristics for AC

Note 7: Voltage Range 3.3 is 3.3V ± 3.3V

Voltage Range 5.0 is 5.0V ± 0.5V

Symbol Parameter

V

CC

TA = +25°CT

A

= −40°C to +85°C

Units Conditions

(V) Typ Guaranteed Limits

V

IH

Minimum HIGH Level 4.5 1.5 2.0 2.0

V

V

OUT

= 0.1V

Input Voltage 5.5 1.5 2.0 2.0 or VCC − 0.1V

V

IL

Maximum LOW Level 4.5 1.5 0.8 0.8

V

V

OUT

= 0.1V

Input Voltage 5.5 1.5 0.8 0.8 or V

CC

− 0.1V

V

OH

Minimum HIGH Level 4.5 4.49 4.4 4.4

VI

OUT

= −50 µA

Output Voltage 5.5 5.49 5.4 5.4

VIN = VIL or V

IH

4.5 3.86 3.76 V IOH = −24 mA

5.5 4.86 4.76 I

OH

= −24 mA (Note 5)

V

OL

Maximum LOW Level 4.5 0.001 0.1 0.1

VI

OUT

= 50 µA

Output Voltage 5.5 0.001 0.1 0.1

VIN = VIL or V

IH

4.5 0.36 0.44 V IOL = 24 mA

5.5 0.36 0.44 IOL = 24 mA (Note 5)

I

IN

Maximum Input

5.5 ±0.1 ±1.0 µAVI = VCC, GND

Leakage Current

I

OZ

Maximum 3- STATE

5.5 ±0.25 ±2.5 µA

VI = VIL, V

IH

Leakage Current VO = VCC, GND

I

CCT

Maximum

5.5 0.6 1.5 mA VI = VCC − 2.1V

ICC/Input

I

OLD

Minimum Dynamic 5.5 75 mA V

OLD

= 1.65V Max

I

OHD

Output Current (Note 6) 5.5 −75 mA V

OHD

= 3.85V Min

I

CC

Maximum Quiescent

5.5 4.0 40.0 µA

VIN = V

CC

Supply Current or GND

V

CC

TA = +25°CT

A

= −40°C to +85°C

Symbol Parameter (V)

C

L

= 50 pF CL = 50 pF

Units

(Note 7) Min Typ Max Min Max

t

PLH

Propagation Delay 3.3 1.5 6.0 9.0 1.5 10.0

ns

Data to Output 5.0 1.5 5.0 7.0 1.0 7.5

t

PHL

Propagation Delay 3.3 1.5 6.0 9.0 1.0 10.5

ns

Data to Output 5.0 1.5 4.5 7.0 1.0 7.5

t

PZH

Output Enable Time 3.3 1.5 6.5 12.5 1.0 13.0

ns

5.0 1.5 5.5 9.0 1.0 9.5

t

PZL

Output Enable Time 3.3 1.5 7.0 12.0 1.5 13.0

ns

5.0 1.5 5.5 9.0 1.0 9.5

t

PHZ

Output Disable Time 3.3 2.0 8.0 12.0 2.0 12.5

ns

5.0 1.5 6.5 10.0 1.0 10.5

t

PLZ

Output Disable Time 3.3 1.5 7.0 12.5 1.0 13.0

ns

5.0 1.5 6.0 10.0 1.0 10.5

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74AC241 • 74ACT241

AC Electrical Characteristics for ACT

Note 8: Voltage Range 5.0 is 5.0V ± 0.5V

Capacitance

V

CC

TA = +25°CT

A

= −40°C to +85°C

Symbol Parameter (V)

C

L

= 50 pF CL = 50 pF

Units

(Note 8) Min Typ Max Min Max

t

PLH

Propagation Delay

5.0 1.5 6.5 9.0 1.5 10.0 ns

Data to Output

t

PHL

Propagation Delay

5.0 1.5 7.0 9.0 1.5 10.0 ns

Data to Output

t

PZH

Output Enable Time 5.0 1.5 6.0 9.0 1.0 10.0 ns

t

PZL

Output Enable Time 5.0 1.5 7.0 10.0 1.5 11.0 ns

t

PHZ

Output Disable Time 5.0 1.5 8.0 10.5 1.5 11.5 ns

t

PLZ

Output Disable Time 5.0 2.0 7.0 10.5 1.5 11.5 ns

Symbol Parameter Typ Units Conditions

C

IN

Input Capacitance 4.5 pF VCC = OPEN

C

PD

Power Dissipation Capacitance 45.0 pF VCC = 5.0V

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74AC241 • 74ACT241

Physical Dimensions inches (millimeters) unless otherwise noted

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

Package Number M20B

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74AC241 • 74ACT241

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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74AC241 • 74ACT241

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

20-Lead Thin Shrink Sm all Ou tline Pa ck age (TS SO P), JE DE C MO-153, 4.4mm Wide

Package Number MTC20

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74AC241 • 74ACT241 Octal Buffer/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 not assume any responsibility for use of any circuitr y described, no circuit patent licenses are implied and
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 support devices or systems are 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 rea­sonably expected to result in a significant inju ry to the
user.

2. A critical component in any compon ent of a lif e supp ort
device or system whose failure t o perform can be rea­sonably expected to ca use the failure of the life supp ort
device or system, or to affect its safety or effectiveness.

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