74F2243SC [FAIRCHILD]
Quad Bus Transceiver with 25W Series Resistors in the Outputs; 四路总线收发器与25W串联电阻的输出
| 型号： | 74F2243SC |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Quad Bus Transceiver with 25W Series Resistors in the Outputs |
| 文件： | 总3页 (文件大小：35K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
October 1988
Revised August 1999
74F2243
Quad Bus Transceiver
with 25Ω Series Resistors in the Outputs
General Description
Features
■ 25Ω series resistors in outputs eliminate the need for
The 74F2243 is a quad bus transmitter/receiver which can
be used for 4-line asynchronous 2-way data communica-
tions between data busses. It is designed to drive the
capacitive inputs of MOS memory drivers, address drivers,
clock drivers, and bus-oriented transmitters/receivers.
external resistors
■ 2-Way asynchronous data bus communication
■ 3-STATE outputs
■ 12 mA source current
The 25Ω series resistors in the outputs reduce ringing and
eliminate the need for external resistors.
■ Designed to drive the capacitive inputs of MOS devices
Ordering Code:
Order Number Package Number
Package Description
74F2243SC
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
IEEE/IEC
Truth Table
Inputs
E1
Inputs/Outputs
E2
An
Bn
L
L
L
H
L
Input
N/A
Z
B = A
N/A
Z
H
H
H
A = B
Input
H = HIGH Voltage Level
L = LOW Voltage Level
Z = High Impedance
N/A = Not Allowed
Unit Loading/Fan Out
Input IIH/IIL
U.L.
Pin Names
Description
Output IOH/IOL
HIGH/LOW
Enable Input (Active LOW)
1.0/1.67
20 µA/−1 mA
E1
E2
Enable Input (Active HIGH)
1.0/1.67
3.5/2.67
750/20
20 µA/−1 mA
70 µA/−1.6 mA
−15 mA/12 mA
An, Bn
Inputs
Outputs
© 1999 Fairchild Semiconductor Corporation
DS009530
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Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions
Storage Temperature
−65°C to +150°C
Ambient Temperature under Bias
Junction Temperature under Bias
VCC Pin Potential to Ground Pin
Input Voltage (Note 2)
−55°C to +125°C
−55°C to +150C
−0.5V to +7.0V
Free Air Ambient Temperature
Supply Voltage
0°C to +70°C
+4.5V to +5.5V
−0.5V to +7.0V
Input Current (Note 2)
−30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with VCC = 0V)
Standard Output
−0.5V to VCC
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
3-STATE Output
−0.5V to +5.5V
Current Applied to Output
in LOW State (Max)
Note 2: Either voltage limit or current limit is sufficient to protect inputs.
twice the rated IOL (mA)
4000V
ESD Last Passing Voltage (Min)
DC Electrical Characteristics
V
Symbol
Parameter
Input HIGH Voltage
Min
Typ
Max
Units
Conditions
CC
V
V
V
V
2.0
V
V
V
Recognized as a HIGH Signal
Recognized as a LOW Signal
IH
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
0.8
IL
−1.2
Min
Min
I
I
I
I
I
I
= −18 mA
CD
OH
IN
10% V
10% V
5% V
2.4
2.0
2.7
= −3 mA (A , B )
n n
CC
CC
CC
OH
OH
OH
OL
OL
Voltage
V
= −15 mA (A , B )
n n
= −3 mA (A , B )
n
n
V
Output LOW
Voltage
0.50
0.75
= 1 mA (A , B )
n n
OL
V
Min
Max
Max
= 12 mA (A , B )
n
n
I
I
Input HIGH Current
20
µA
µA
V
= 2.7V (E , E )
1 2
IH
IN
IN
Input HIGH Current
Breakdown Test
BVI
100
V
= 7.0V (E , E )
1 2
I
Input HIGH Current
Breakdown Test (I/O)
BVIT
1.0
mA
Max
V
= 5.5V (A , B )
n n
IN
I
I
I
I
I
I
I
I
Input LOW Current
−1.0
70
mA
µA
Max
Max
Max
Max
Max
Max
Max
Max
V
V
V
V
V
V
V
V
= 0.5V (E , E )
1 2
IL
IN
+ I
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
= 2.7V (A , B )
n n
IH
IL
OZH
OUT
OUT
OUT
OUT
+ I
−1.6
−225
250
80
mA
mA
µA
= 0.5V (A , B )
n n
OZL
−100
= 0V (A , B )
n n
OS
Output HIGH Leakage Current
Power Supply Current
Power Supply Current
Power Supply Current
= V
CC
CEX
CCH
CCL
CCZ
64
64
71
mA
mA
mA
= HIGH
= LOW
O
O
O
90
90
= HIGH Z
AC Electrical Characteristics
T
= +25°C
T = 0°C to +70°C
A
A
V
= +5.0V
= 50 pF
Typ
V
= +5.0V
C = 50 pF
L
CC
CC
Symbol
Parameter
Units
C
L
Min
1.5
2.5
1.5
2.5
1.5
1.5
Max
7.0
Min
1.5
2.0
1.0
2.5
1.0
1.5
Max
t
t
t
t
t
t
Propagation Delay
to B , B to A
7.0
8.0
9.5
12.0
9.5
9.5
PLH
ns
ns
A
8.0
PHL
PZH
PZL
PHZ
PLZ
n
n
n
n
Output Enable Time
to B , E to A
9.0
E
11.5
9.0
1
n
2
n
Output Disable Time
to B , E to A
E
8.5
1
n
2
n
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Physical Dimensions inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Package Number M14A
Fairchild does not assume any responsibility for use of any circuitry 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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SEMICONDUCTOR CORPORATION. As used herein:
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instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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