參數(shù)資料
型號: MC74LCX245MEL
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: Low-Voltage CMOS Octal Transceiver With 5 V−Tolerant Inputs and Outputs (3−State, Inverting)
中文描述: LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝: EIAJ, SOP-20
文件頁數(shù): 5/8頁
文件大小: 101K
代理商: MC74LCX245MEL
MC74LCX245
http://onsemi.com
5
DYNAMIC SWITCHING CHARACTERISTICS
T
A
= +25
°
C
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
V
OLP
Dynamic LOW Peak Voltage (Note 4)
V
CC
= 3.3 V, C
L
= 50 pF, V
IH
= 3.3 V, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= 2.5 V, V
IL
= 0 V
0.8
0.6
V
V
V
OLV
Dynamic LOW Valley Voltage (Note 4)
V
CC
= 3.3 V, C
L
= 50 pF, V
IH
= 3.3 V, V
IL
= 0 V
V
CC
= 2.5 V, C
L
= 30 pF, V
IH
= 2.5 V, V
IL
= 0 V
0.8
0.6
V
V
4. Number of outputs defined as “n”. Measured with “n1” outputs switching from HIGHtoLOW or LOWtoHIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Condition
Typical
Unit
C
IN
Input Capacitance
V
CC
= 3.3 V, V
I
= 0 V or V
CC
7
pF
C
I/O
Input/Output Capacitance
V
CC
= 3.3 V, V
I
= 0 V or V
CC
8
pF
C
PD
Power Dissipation Capacitance
10 MHz, V
CC
= 3.3 V, V
I
= 0 V or V
CC
25
pF
WAVEFORM 1 PROPAGATION DELAYS
t
R
= t
F
= 2.5 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns
V
CC
0 V
V
OH
V
OL
An, Bn
t
PHL
t
PLH
WAVEFORM 2 OUTPUT ENABLE AND DISABLE TIMES
t
R
= t
F
= 2.5 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns
0 V
OE, T/R
t
PZH
t
PHZ
t
PZL
t
PLZ
Vmo
Vmo
Vmi
Vmi
Vmo
Vmo
Figure 3. AC Waveforms
Vmi
V
OH
V
HZ
V
OL
V
CC
V
LZ
Symbol
V
CC
3.3 V
±
0.3 V
2.7 V
2.5 V
±
0.2 V
Vmi
1.5 V
1.5 V
V
CC
/2
Vmo
1.5 V
1.5 V
V
CC
/2
V
HZ
V
OL
+ 0.3 V
V
OL
+ 0.3 V
V
OL
+ 0.15 V
V
LZ
V
OH
0.3 V
V
OH
0.3 V
V
OH
015 V
Bn, An
An, Bn
An, Bn
Vmi
相關(guān)PDF資料
PDF描述
MC74LCX245DR2G Low-Voltage CMOS Octal Transceiver With 5 V−Tolerant Inputs and Outputs (3−State, Inverting)
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