參數(shù)資料
型號： 74VCXH245MNR2G
廠商： ON SEMICONDUCTOR
元件分類： 通用總線功能
英文描述： Low-Voltage 1.8/2.5/3.3 V 8-Bit Transceiver
中文描述： ALVC/VCX/A SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, QCC20
封裝： LEAD FREE, QFN-20
文件頁數(shù)： 5/8頁
文件大小： 78K
代理商： 74VCXH245MNR2G
74VCXH245
http://onsemi.com
5
AC CHARACTERISTICS
(Note 7; t
R
= t
F
= 2.0 ns; C
L
= 30 pF; R
L
= 500 )
Limits
T
A
= 40
°
C to +85
°
C
V
CC
= 3.0 V to 3.6 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 1.65 V to1.95 V
Symbol
Parameter
Waveform
Min
Max
Min
Max
Min
Max
Unit
t
PLH
t
PHL
Propagation Delay
Input to Output
1
0.6
0.6
3.5
3.5
0.8
0.8
4.2
4.2
1.5
1.5
8.4
8.4
ns
t
PZH
t
PZL
Output Enable Time to
High and Low Level
2
0.6
0.6
4.5
4.5
0.8
0.8
5.6
5.6
1.5
1.5
9.8
9.8
ns
t
PHZ
t
PLZ
Output Disable Time From
High and Low Level
2
0.6
0.6
3.6
3.6
0.8
0.8
4.0
4.0
1.5
1.5
7.2
7.2
ns
t
OSHL
t
OSLH
OutputtoOutput Skew
(Note 8)
0.5
0.5
0.5
0.5
0.75
0.75
ns
7. For C
L
= 50 pF, add approximately 300 ps to the AC maximum specification.
8. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGHtoLOW (t
OSHL
) or LOWtoHIGH (t
OSLH
); parameter
guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
T
A
= +25
°
C
Symbol
V
OLP
Characteristic
Dynamic LOW Peak Voltage
(Note 9)
Condition
Typ
Unit
V
V
CC
= 1.8 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
0.3
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
0.7
V
CC
= 3.3 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
1.0
V
OLV
Dynamic LOW Valley Voltage
(Note 9)
V
CC
= 1.8 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
0.3
V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
0.7
V
CC
= 3.3 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
1.0
V
OHV
Dynamic HIGH Valley Voltage
(Note 10)
V
CC
= 1.8 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
1.3
V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
1.7
V
CC
= 3.3 V, C
L
= 30 pF, V
IH
= V
CC
, V
IL
= 0 V
2.0
9. Number of outputs defined as “n”. Measured with “n1” outputs switching from HIGHtoLOW or LOWtoHIGH. The remaining output is
measured in the LOW state.
10.Number of outputs defined as “n”. Measured with “n1” outputs switching from HIGHtoLOW or LOWtoHIGH. The remaining output is
measured in the HIGH state.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Condition
Typical
Unit
C
IN
Input Capacitance
Note 11
6
pF
C
OUT
Output Capacitance
Note 11
7
pF
C
PD
Power Dissipation Capacitance
Note 11, 10 MHz
20
pF
11.V
CC
= 1.8, 2.5 or 3.3 V; V
I
= 0 V or V
CC
.
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