參數(shù)資料
型號: 74LVQ245QSCX
英文描述: Single 8-bit Bus Transceiver
中文描述: 單8位總線收發(fā)器
文件頁數(shù): 4/9頁
文件大小: 69K
代理商: 74LVQ245QSCX
74LVQ4066
4/9
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 3ns)
1) C
is defined as the valueof 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
xV
CC
xf
IN
+I
CC
/4 (Switch).
(*) Voltage range is 3.3V
±
0.3V
(*) Voltage range is 5V
±
0.5V
ANALOG SWITCH CHARACTERISTICS
(GND = 0 V , TA = 25
°
C)
(*) Voltage range is 5V
±
0.5V
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
PD
Delay Time
3.3(*)
5.0
(**)
3.3(*)
5.0
(**)
3.3(*)
5.0
(**)
0.4
0.8
1.2
2.0
ns
0.1
0.2
1.0
1.8
t
PZL
t
PZH
Output Enable
Time
R
L
= 1 k
2.5
2.0
4.0
4.0
5.0
5.0
7.0
7.0
ns
t
PLZ
t
PHZ
Output Disable
Time
R
L
= 1 k
5.0
5.0
7.5
7.5
9.0
9.0
11.0
11.0
ns
C
IN
Input Capacitance
Switch Terminal
Capacitance
Power Dissipation
Capacitance
(note 1)
5
pF
C
I/O
10
pF
C
PD
3.3
2.5
3
pF
5.0
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
V
IN
(V
p-p
)
Sine Wave Distortion
(THD)
3.3
5.0(*)
3.3
2.75
4
f
IN
= 1 KHz
R
L
= 10K
C
L
= 50 pF
0.04
0.04
150
180
%
f
MAX
Frequency Response
(Switch ON)
Adjust f
IN
voltagetoObtain 0dBm atV
OS
.
Increase f
IN
Frequency until dB Meter reads -3dB
RL = 50
,
C
L
= 10pF
V
IN
is centered at V
CC
/2. Adjust input for 0dBm
R
L
= 600
, C
L
= 50pF, F
IN
= 1 MHz sine wave
MHz
5.0(*)
Feed through
Attenuation (Switch OFF)
3.3
5.0(*)
3.3
5.0(*)
3.3
5.0(*)
-60
-60
dB
Crosstalk (Control Input
to Signal Output)
R
L
= 600
,
C
L
= 50pF, f
IN
= 1MHz square wave
60
60
-60
-60
mV
Crosstalk (Between Any
Switches)
R
L
= 600
,
C
L
= 50pF, f
IN
= 1MHz sine wave
dB
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