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参数资料
型号： MC74LVX245MR2
厂商： ON SEMICONDUCTOR
元件分类： 总线收发器
英文描述： LV/LV-A/LVX/H SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封装： LEAD FREE, EIAJ, SO-20
文件页数： 4/8页
文件大小： 96K
代理商： MC74LVX245MR2
MC74LVX245
http://onsemi.com
4
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0 ns)
TA = 25°C
TA = 40 to 85°C
Symbol
Parameter
Test Conditions
Min
Typ
Max
Min
Max
Unit
tPLH,
tPHL
Propagation Delay
Input to Output
VCC = 2.7 V
CL = 15 pF
CL = 50 pF
6.1
8.6
10.7
14.2
1.0
13.5
17.0
ns
VCC = 3.3 ± 0.3 V
CL = 15 pF
CL = 50 pF
4.7
7.2
6.6
10.1
1.0
8.0
11.5
tPZL,
tPZH
Output Enable Time to
High and Low Level
VCC = 2.7 V
CL = 15 pF
RL = 1 kW
CL = 50 pF
9.0
11.5
16.9
20.4
1.0
20.5
24.0
ns
VCC = 3.3 ± 0.3 V
CL = 15 pF
RL = 1 kW
CL = 50 pF
7.1
9.6
11.0
14.5
1.0
13.0
16.5
tPLZ,
tPHZ
Output Disable Time From
High and Low Level
VCC = 2.7 V
CL = 50 pF
RL = 1 kW
11.5
18.0
1.0
21.0
ns
VCC = 3.3 ± 0.3 V
CL = 50 pF
RL = 1 kW
9.6
12.8
1.0
14.5
tOSHL
tOSLH
OutputtoOutput Skew
(Note 1)
VCC = 2.7 V
CL = 50 pF
VCC = 3.3 ±0.3 V
CL = 50 pF
1.5
1.5
ns
1. 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 (tOSHL) or LOWtoHIGH (tOSLH); parameter
guaranteed by design.
CAPACITIVE CHARACTERISTICS
TA = 25°C
TA = 40 to 85°C
Symbol
Parameter
Min
Typ
Max
Min
Max
Unit
Cin
Input Capacitance (T/R, OE)
4
10
10
pF
CI/O
Maximum 3State I/O Capacitance
8
pF
CPD
Power Dissipation Capacitance (Note 2)
21
pF
2. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Average operating current can be obtained by the equation: ICC(OPR) = CPD VCC fin + ICC / 8 (per bit). CPD is used to determine the noload
dynamic power consumption; PD = CPD VCC2 fin + ICC VCC.
NOISE CHARACTERISTICS (Input tr = tf = 3.0ns, CL = 50pF, VCC = 3.3V, Measured in SOIC Package)
TA = 25°C
Symbol
Characteristic
Typ
Max
Unit
VOLP
Quiet Output Maximum Dynamic VOL
0.5
0.8
V
VOLV
Quiet Output Minimum Dynamic VOL
0.5
0.8
V
VIHD
Minimum High Level Dynamic Input Voltage
2.0
V
VILD
Maximum Low Level Dynamic Input Voltage
0.8
V
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