參數(shù)資料
型號: 74AC245TTR
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)
中文描述: 八路總線收發(fā)器與三態(tài)輸出(非反相)
文件頁數(shù): 4/9頁
文件大?。?/td> 265K
代理商: 74AC245TTR
74AC245
4/9
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, R
L
= 500
, Input t
r
= t
f
= 3ns)
(*) Voltage range is 3.3V
±
0.3V
(**) Voltage range is 5.0V
±
0.5V
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/16 (per
circuit)
TEST CIRCUIT
C
L
= 50pF or equivalent (includes jig and probe capacitance)
R
L
= R
1
= 500
or equivalent
R
T
= Z
OUT
of pulse generator (typically 50
)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
PLH
t
PHL
Propagation Delay
Time
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
1.5
5.5
8.5
1.5
9.0
1.5
11.5
ns
1.5
4.5
6.5
1.5
7.0
1.5
8.5
t
PZL
t
PZH
Output Enable
Time
1.5
7.5
12.0
1.5
13.5
1.5
14.0
ns
1.5
5.5
9.0
1.5
9.5
1.5
10.5
t
PLZ
t
PHZ
Output Disable
Time
1.5
6.2
12.0
1.5
13.0
1.5
14.0
ns
1.5
5.2
9.0
1.5
10.0
1.5
10.5
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
C
IN
C
I/O
C
PD
Input Capacitance
I/O Capacitance
Power Dissipation
Capacitance (note
1)
5.0
5.0
5
pF
pF
10
5.0
f
IN
= 10MHz
21
pF
TEST
SWITCH
t
PLH
, t
PHL
t
PZL
, t
PLZ
t
PZH
, t
PHZ
Open
2V
CC
Open
相關(guān)PDF資料
PDF描述
74AC245 Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
74AC245MTC Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
74AC245PC Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
74AC245SC Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
74AC245SJ Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
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