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參數(shù)資料
| 型號： | IDT74FCT543AD |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | FAST CMOS OCTAL LATCHED TRANSCEIVER |
| 中文描述： | FCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDIP24 |
| 封裝： | CERDIP-24 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 149K |
| 代理商： | IDT74FCT543AD |
3
IDT54/74FCT543/A/C
FAST CMOS OCTAL LATCHED TRANSCEIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names
OEAB
OEBA
CEAB
CEBA
LEAB
LEBA
A
0
–A
7
B
0
–B
7
Description
A-to-B Output Enable Input (Active LOW)
B-to-A Output Enable Input (Active LOW)
A-to-B Enable Input (Active LOW)
B-to-A Enable Input (Active LOW)
A-to-B Latch Enable Input (Active LOW)
B-to-A Latch Enable Input (Active LOW)
A-to-B Data Inputs or B-to-A 3-State Outputs
B-to-A Data Inputs or A-to-B 3-State Outputs
FUNCTION TABLE
(1,2)
For A-to-B (Symmetric with B-to-A)
Latch
Status
A-to-B
Output
Buffers
B
0
–B
7
Inputs
LEAB
X
H
X
L
H
CEAB
H
X
X
L
L
OEAB
X
X
H
L
L
Storing
Storing
X
Transparent
Storing
High Z
X
High Z
Current A Inputs
Previous*A Inputs
NOTES:
1. * Before
LEAB
LOW-to-HIGH Transition
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care or Irrelevant
2. A-to-B data flow shown; B-to-A flow control is the same, except using
CEBA
,
LEBA
and
OEBA
.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: V
LC
= 0.2V, V
HC
= V
CC
– 0.2V
Commercial: T
A
= 0°C to +70°C, V
CC
= 5.0V ± 5%; Mlitary: T
A
= –55°C to +125°C, V
CC
= 5.0V ± 10%
Symbol
Parameter
V
IH
Input HIGH Level
Guaranteed Logic HIGH Level
V
IL
Input LOW Level
Guaranteed Logic LOW Level
I
IH
Input HIGH Current
V
CC
= Max.
(Except I/O pins)
I
IL
Input LOW Current
(Except I/O pins)
I
IH
Input HIGH Current
V
CC
= Max.
(I/O pins Only)
I
IL
Input LOW Current
(I/O pins Only)
V
IK
Clamp Diode Voltage
V
CC
= Mn., I
N
= –18mA
I
OS
Short Circuit Current
V
CC
= Max.
(3)
, V
O
= GND
V
OH
Output HIGH Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OH
= –32μA
V
CC
= Mn.
V
IN
= V
IH
or V
IL
Test Conditions
(1)
Min.
2
—
—
—
—
—
—
—
—
—
—
–60
V
HC
V
HC(4)
2.4
2.4
—
—
—
—
Typ.
(2)
—
—
—
—
—
—
—
—
—
—
–0.7
–120
V
CC
V
CC
4.3
4.3
GND
GND
0.3
0.3
Max.
—
0.8
5
5
(4)
–5
(4)
–5
15
15
(4)
–15
(4)
–15
–1.2
—
—
—
—
—
V
LC
V
LC(4)
0.55
0.55
Unit
V
V
μA
V
I
= V
CC
V
I
= 2.7V
V
I
= 0.5V
V
I
= GND
V
I
= V
CC
V
I
= 2.7V
V
I
= 0.5V
V
I
= GND
μA
μA
μA
V
mA
V
I
OH
= –300μA
I
OH
= –12mA MIL.
I
OH
= –15mA COML.
V
OL
Output LOW Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OL
= 300μA
V
CC
= Mn.
V
IN
= V
IH
or V
IL
V
I
OL
= 300μA
I
OL
= 48mA MIL.
(5)
I
OL
= 64mA COML.
(5)
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. This parameter is guaranteed but not tested.
5. These are maximum I
OL
values per output, for 8 outputs turned on simultaneously. Total maximum I
OL
(all outputs) is 512mA for commercial and
384mA for military. Derate I
OL
for number of outputs exceeding 8 turned on simultaneously.
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