參數(shù)資料
型號(hào)： DM74AS646
廠商： Fairchild Semiconductor Corporation
英文描述： Octal Bus Transceiver and Register
中文描述： 八路總線收發(fā)器和注冊(cè)
文件頁數(shù)： 4/8頁
文件大?。?/td> 82K
代理商： DM74AS646
www.fairchildsemi.com
4
D
Absolute Maximum Ratings
(Note 3)
Note 3:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Note 4:
The (
↑
) arrow indicates the positive edge of the Clock is used for reference.
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at V
CC
=
5V, T
A
=
25
°
C.
Symbol
Parameter
Note 5:
For I/O ports, the parameters I
IH
and I
IL
include the OFF-State current, I
OZH
and I
OZL
.
Supply Voltage
Input Voltage
Control Inputs
I/O Ports
Operating Free Air Temperature Range
Storage Temperature Range
Typical
θ
JA
N Package
M Package
7V
7V
5.5V
0
°
C to
+
70
°
C
65
°
C to
+
150
°
C
41.1
°
C/W
81.5
°
C/W
Symbol
V
CC
V
IH
V
IL
I
OH
I
OL
f
CLK
t
W
Parameter
Min
4.5
2
Nom
5
Max
5.5
Units
V
V
V
mA
mA
MHz
ns
ns
ns
ns
°
C
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Clock Frequency
Width of Clock Pulse
0.8
15
48
90
0
5
6
6
↑
0
↑
0
HIGH
LOW
t
SU
t
H
T
A
Data Setup Time (Note 4)
Data Hold Time (Note 4)
Free Air Operating Temperature
70
Conditions
Min
Typ
Max
Units
V
IK
V
OH
Input Clamp Voltage
HIGH Level
V
CC
=
4.5V, I
I
=
18 mA
V
CC
=
4.5V, V
IL
=
Max
V
IH
=
Min
V
CC
=
4.5V to 5.5V, I
OH
=
2 mA
V
CC
=
4.5V, V
IL
=
Min
V
IH
=
2V, I
OL
=
Max
V
CC
=
5.5V
1.2
V
I
OH
=
Max
I
OH
=
3 mA
2
Output Voltage
2.4
3.2
V
V
CC
2
V
OL
LOW Level
0.35
0.5
V
Output Voltage
Input Current @ Max
Input Voltage
I
I
V
I
=
7V
V
I
=
5.5V
Control Inputs
A or B Ports
0.1
0.1
mA
I
IH
HIGH Level Input Current
V
CC
=
5.5V, V
IH
=
2.7V
(Note 5)
V
CC
=
5.5V, V
IL
=
0.4V
(Note 5)
V
CC
=
5.5V, V
O
=
2.25V
V
CC
=
5.5V
Control Inputs
A or B Ports
Control Inputs
20
70
0.5
0.75
112
195
μ
A
I
IL
LOW Level Input Current
mA
A or B Ports
I
O
I
CC
Output Drive Current
Supply Current
30
mA
Outputs HIGH
120
DM74AS646
Outputs LOW
Outputs Disabled
Outputs HIGH
130
130
110
211
211
185
mA
DM74AS648
Outputs LOW
Outputs Disabled
120
120
195
195
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DM74AS646_A1110562 WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
DM74AS646NT 功能描述:總線收發(fā)器 Oct 3-STATE Bus Reg RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
DM74AS646WM 功能描述:總線收發(fā)器 Oct 3-STATE Bus Reg RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
DM74AS646WMX 功能描述:總線收發(fā)器 Oct 3-STATE Bus Reg RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
DM74AS648NT 功能描述:總線收發(fā)器 Oct 3-STATE Bus Reg RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
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