參數(shù)資料
型號(hào): 74ACT244
廠商: 意法半導(dǎo)體
英文描述: Octal Bus Buffer with 3 State Outputs (Non Inverted)(三態(tài)輸出八總線緩沖器)
中文描述: 八路總線緩沖器的三態(tài)輸出(非反相)(三態(tài)輸出八總線緩沖器)
文件頁數(shù): 4/8頁
文件大小: 77K
代理商: 74ACT244
TEST CIRCUIT
TEST
SWITCH
Open
2V
CC
Open
t
PLH
, t
PHL
t
PZL
, t
PLZ
t
PZH
, t
PHZ
C
L
=50 pFor equivalent (includes jigand probe capacitance)
R
L
=R
1
=500
or equivalent
R
T
=Z
OUT
of pulse generator (typically50
)
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Conditions
Value
Unit
V
CC
(V)
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
Max.
Max.
C
IN
C
i/o
C
PD
Input Capacitance
I/O Capacitance
Power Dissipation
Capacitance (note 1)
1) C
PD
isdefined as the value ofthe IC’s internalequivalent capacitance which iscalculated fromtheoperating currentconsumption without load. (Refer to
Test Circuit).Average operating current can beobtained by the followingequation.I
CC
(opr) =C
PD
V
CC
f
IN
+I
CC
/n (per circuit)
5.0
5.0
5.0
4
8
24
pF
pF
pF
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, R
L
= 500
, Input t
r
= t
f
=3ns)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
5.0
(*)
T
A
= 25
o
C
Min.
Typ.
1.5
-40 to 85
o
C
Min.
1.5
Max.
9.0
Max.
10.0
t
PLH
t
PHL
t
PZL
t
PZH
t
PLZ
t
PHZ
Propagation Delay Time
4.5
ns
Output Enable Time
5.0
(*)
1.5
5.5
9.0
1.5
10.0
ns
Output Disable Time
5.0
(*)
1.5
6.5
10.0
1.5
11.0
ns
(*)Voltage range is 5V
±
0.5V
74ACT244
4/8
相關(guān)PDF資料
PDF描述
74ACT245T 17-Bit TTL/BTL Universal Storage Transceiver With Buffered Clock Lines 100-HLQFP 0 to 70
74ACT245 OCTAL BUS TRANSCEIVER 3-STATE
74ACT245B OCTAL BUS TRANSCEIVER 3-STATE
74ACT245M OCTAL BUS TRANSCEIVER 3-STATE
74ACT245MTR OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)
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