DC Electrical Characteristics (Continued) Note 5: Outputs disabled " />
參數資料
型號: 74LCXH245SJ
廠商: Fairchild Semiconductor
文件頁數: 5/10頁
文件大小: 0K
描述: IC TXRX BIDIR LV BUSHOLD 20SOP
標準包裝: 38
系列: 74LCXH
邏輯類型: 收發(fā)器,非反相
元件數: 1
每個元件的位元數: 8
輸出電流高,低: 24mA,24mA
電源電壓: 2 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.209",5.30mm 寬)
供應商設備封裝: 20-SOP
包裝: 管件
www.fairchildsemi.com
4
74L
C
XH245
DC Electrical Characteristics (Continued)
Note 5: Outputs disabled or 3-STATE only.
Note 6: An external driver must source at least the specified current to switch from LOW-to-HIGH.
Note 7: An external driver must sink at least the specified current to switch from HIGH-to-LOW.
AC Electrical Characteristics
Note 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 HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).
Dynamic Switching Characteristics
Capacitance
Symbol
Parameter
Conditions
VCC
TA = 40°C to +85°C
Units
(V)
Min
Max
II(HOLD)
Bushold Input Minimum
VIN = 0.7V
2.3
45
A
Drive Hold Current
VIN = 1.7V
45
VIN = 0.8V
3.0
75
VIN = 2.0V
75
II(OD)
Bushold Input Over-Drive
(Note 6)
2.7
300
A
Current to Change State
(Note 7)
300
(Note 6)
3.6
450
(Note 7)
450
IOZ
3-STATE I/O Leakage
VO = VCC or GND
2.3
3.6
±5.0
A
ICC
Quiescent Supply Current
VI = VCC or GND
2.3
3.6
10
A
3.6V
≤ V
I, VO ≤ 5.5V (Note 5)
2.3
3.6
±10
I
CC
Increase in ICC per Input
VIH = VCC 0.6V
2.3 - 3.6
500
A
Symbol
Parameter
TA = 40°C to +85°C, RL = 500
Units
VCC = 3.3V ± 0.3V
VCC = 2.7V
VCC = 2.5V ± 0.2V
CL = 50 pF
CL = 30 pF
Min
Max
Min
Max
Min
Max
tPHL
Propagation Delay
1.5
7.0
1.5
8.0
1.5
8.4
ns
tPLH
An to Bn or Bn to An
1.5
7.0
1.5
8.0
1.5
8.4
tPZL
Output Enable Time
1.5
8.5
1.5
9.5
1.5
10.5
ns
tPZH
1.5
8.5
1.5
9.5
1.5
10.5
tPLZ
Output Disable Time
1.5
7.5
1.5
8.5
1.5
9.0
ns
tPHZ
1.5
7.5
1.5
8.5
1.5
9.0
tOSHL
Output to Output Skew
1.0
ns
tOSLH
(Note 8)
1.0
Symbol
Parameter
Conditions
VCC
TA = 25°C
Units
(V)
Typical
VOLP
Quiet Output Dynamic Peak VOL
CL = 50 pF, VIH = 3.3V, VIL = 0V
3.3
0.8
V
CL = 30 pF, VIH = 2.5V, VIL = 0V
2.5
0.6
VOLV
Quiet Output Dynamic Valley VOL
CL = 50 pF, VIH = 3.3V, V IL = 0V
3.3
0.8
V
CL = 30 pF, VIH = 2.5V, VIL = 0V
2.5
0.6
Symbol
Parameter
Conditions
Typical
Units
CIN
Input Capacitance
VCC = Open, VI = 0V or VCC
7pF
CI/O
Input/Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8pF
CPD
Power Dissipation Capacitance
VCC = 3.3V, VI = 0V or VCC, f = 10 MHz
25
pF
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