Fairchild Semiconductor 74F2243SCX, 74F2243SC Datasheet

© 1999 Fairchild Semiconductor Corporation DS009530 www.fairchildsemi.com

October 1988
Revised August 1999

74F2243 Quad Bus Transc eiver

74F2243
Quad Bus Transceiver

with 25Ω Series Resistors in the Outputs

General Description

The 74F2243 is a quad bus t ran smitter/ rece iver w hich c an
be used for 4-line asynchro nous 2-way data communica­tions between data busses. It is designed to drive the
capacitive inputs of MOS memory drivers, addre ss drivers,
clock drivers, and bus-oriented transmitters/receivers.

The 25Ω series resist ors i n the outputs reduc e rin ging a nd
eliminate the need for external resistors.

Features

■ 25Ω series resistors in outputs eliminate the need for
external resistors

■ 2-Way asynchronous data bus communication

■ 3-STATE outputs

■ 12 mA source current

■ Designed to drive the capacitive inputs of MOS devices

Ordering Code:

Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.

Logic Symbol

IEEE/IEC

Connection Diagram

Truth Table

H = HIGH Voltage Level Z = High Impedance
L = LOW Voltage Level N/A = Not Allowed

Unit Loading/Fan Out

Order Number Package Number Package Description

74F2243SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow

Inputs Inputs/Outputs

E

1

E

2

A

n

B

n

LLInputB = A
LHN/A N/A
HL Z Z
HHA = B Input

Pin Names Description

U.L.

Input I

IH/IIL

HIGH/LOW

Output I

OH/IOL

E

1

Enable Input (Active LOW) 1.0/1.67 20 µA/−1 mA

E

2

Enable Input (Active HIGH) 1.0/1.67 20 µA/−1 mA

A

n

, B

n

Inputs 3.5/2.67 70 µA/−1.6 mA
Outputs 750/20 −15 mA/12 mA

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74F2243

Absolute Maximum Ratings(Note 1) Recommended Operating

Conditions

Note 1: Absolute maximum ratings are values beyond which the device

may be damaged or have its useful life impaired. Functional operation
under these conditi ons is not implied.

Note 2: Either voltage limit or curren t limit is sufficient to protect in put s .

DC Electrical Characteristics

AC Electrical Characteristics

Storage Temperature −65°C to +150°C
Ambient Temperature under Bias −55°C to +125°C
Junction Temperature under Bias −55°C to +150C
V

CC

Pin Potential to Ground Pin −0.5V to +7.0V
Input Voltage (Note 2) −0.5V to +7.0V
Input Current (Note 2) −30 mA to +5.0 mA
Voltage Applied to Output

in HIGH State (with V

CC

= 0V)

Standard Output −0.5V to V

CC

3-STATE Output −0.5V to +5.5V

Current Applied to Output

in LOW State (Max) twice the rated I

OL

(mA)

ESD Last Passing Voltage (Min) 4000V

Free Air Ambient Temperature 0°C to +70°C
Supply Voltage +4.5V to +5.5V

Symbol Parameter Min Typ Max Units

V

CC

Conditions

V

IH

Input HIGH Voltage 2.0 V Recognized as a HIGH Signal

V

IL

Input LOW Voltage 0.8 V Recognized as a LOW Signal

V

CD

Input Clamp Diode Voltage −1.2 V Min IIN = −18 mA

V

OH

Output HIGH 10% V

CC

2.4 IOH = −3 mA (An, Bn)

Voltage 10% V

CC

2.0 V Min IOH = −15 mA (An, Bn)

5% V

CC

2.7 IOH = −3 mA (An, Bn)

V

OL

Output LOW 0.50

VMin

IOL = 1 mA (An, Bn)

Voltage 0.75 IOL = 12 mA (An, Bn)

I

IH

Input HIGH Current 20 µAMaxVIN = 2.7V (E1, E2)

I

BVI

Input HIGH Current

100 µAMaxVIN = 7.0V (E1, E2)

Breakdown Test

I

BVIT

Input HIGH Current

1.0 mA Max VIN = 5.5V (An, Bn)

Breakdown Test (I/O)

I

IL

Input LOW Current −1.0 mA Max VIN = 0.5V (E1, E2)

IIH + I

OZH

Output Leakage Current 70 µAMaxV

OUT

= 2.7V (An, Bn)

IIL + I

OZL

Output Leakage Current −1.6 mA Max V

OUT

= 0.5V (An, Bn)

I

OS

Output Short-Circuit Current −100 −225 mA Max V

OUT

= 0V (An, Bn)

I

CEX

Output HIGH Leakage Current 250 µAMaxV

OUT

= V

CC

I

CCH

Power Supply Current 64 80 mA Max VO = HIGH

I

CCL

Power Supply Current 64 90 mA Max VO = LOW

I

CCZ

Power Supply Current 71 90 mA Max VO = HIGH Z

Symbol Parameter

TA = +25°CT

A

= 0°C to +70°C

Units

VCC = +5.0V VCC = +5.0V

CL = 50 pF CL = 50 pF

Min Typ Max Min Max

t

PLH

Propagation Delay 1.5 7.0 1.5 7.0

ns

t

PHL

An to Bn, Bn to A

n

2.5 8.0 2.0 8.0

t

PZH

Output Enable Time 1.5 9.0 1.0 9.5

ns

t

PZL

E1 to Bn, E2 to A

n

2.5 11.5 2.5 12.0

t

PHZ

Output Disable Time 1.5 9.0 1.0 9.5

t

PLZ

E1 to Bn, E2 to A

n

1.5 8.5 1.5 9.5