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參數(shù)資料
| 型號(hào)： | MAX3407EUK |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 75з/100з/120з Switchable Termination Networks |
| 中文描述： | 1-LINE 120 ohm OTHER TERMINATOR, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 132K |
| 代理商： | MAX3407EUK |
Detailed Description
The MAX3406/MAX3407/MAX3408 are line-terminating
networks. They provide 75
, 100
, and 120
termina-
tion to be compatible with twisted pair or coaxial cable.
The MAX3406/MAX3407/MAX3408 consume only 50μA
supply current and operate from a +4.5V to +5.5V
power supply. They are available in a space-saving 5-
pin SOT23 package. All specifications are guaranteed
over the extended temperature range of -40
°
C to
+85
°
C.
The ENABLE pin allows switching from one termination
value to another: 75
to 100
for the MAX3406, 75
to
120
for the MAX3407, and 100
to 120
for the
MAX3408 (Figure 1 and Table 1).
Applications Information
In order for the MAX3406/MAX3407/MAX3408 to termi-
nate transmission lines correctly, they should look like a
precision resistance. These devices look this way under
all operating conditions as can be seen from the
Typical
Operating Characteristics.
The very small variations in
resistance with temperature, input voltage, and frequen-
cy should not be of any concern in most applications,
though the users should be aware of them. The next
three sections describe these variations and explain
what end application effect they could have.
The function of a termination is to minimize line reflec-
tions by terminating a transmission line in its character-
istic impedance. The reflection coefficient for a line of
Z0 characteristic impedance terminated with a given
ZL is:
Voltage Reflection Coefficient = (ZL - Z0)/(ZL + Z0)
M
75
/100
/120
Switchable Termination
Networks
4
_______________________________________________________________________________________
0%
20%
10%
50%
40%
30%
80%
70%
60%
90%
74.40
74.80
RESISTANCE (
)
74.60
75.00
75.20
75.40
75.60
ACCURACY DISTRIBUTION
75
MODE
M
P
0%
20%
10%
50%
40%
30%
80%
70%
60%
90%
98.8
99.6
RESISTANCE (
)
99.2
100.0
100.4
100.8
101.2
ACCURACY DISTRIBUTION
100
MODE
M
P
0%
20%
10%
50%
40%
30%
80%
70%
60%
90%
118.5
119.5
RESISTANCE (
)
119.0
120.0
120.5
121.0
121.5
ACCURACY DISTRIBUTION
120
MODE
M
P
Typical Operating Characteristics (continued)
(V
CC
= +5V, T
A
= +25
°
C, unless otherwise noted.)
Pin Description
PIN
1
2
NAME
V
CC
GND
FUNCTION
Supply Voltage +4.5V to +5.5V. Bypass to GND with a 0.1
μ
F capacitor.
Ground
3
ENABLE
Digital Control Input. Drive ENABLE high to turn on the internal switch, pull ENABLE low to disable
the internal switch.
4
5
B
A
Cable Terminator Terminal B
Cable Terminator Terminal A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3408 | 75з/100з/120з Switchable Termination Networks |
| MAX3408EUK | 75з/100з/120з Switchable Termination Networks |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3407EUK-T | 功能描述:通信集成電路 - 若干 RoHS:否 制造商:Maxim Integrated 類型:Transport Devices 封裝 / 箱體:TECSBGA-256 數(shù)據(jù)速率:100 Mbps 電源電壓-最大:1.89 V, 3.465 V 電源電壓-最小:1.71 V, 3.135 V 電源電流:50 mA, 225 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| MAX3408EUK | 制造商:Maxim Integrated Products 功能描述:75OHM/100OHM/120OHM SWITCHABLE TERM - Cut Tape Product |
| MAX3408EUK+T | 功能描述:通信集成電路 - 若干 75/100/120Ohm Swx Termination Network RoHS:否 制造商:Maxim Integrated 類型:Transport Devices 封裝 / 箱體:TECSBGA-256 數(shù)據(jù)速率:100 Mbps 電源電壓-最大:1.89 V, 3.465 V 電源電壓-最小:1.71 V, 3.135 V 電源電流:50 mA, 225 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| MAX3408EUK-T | 功能描述:通信集成電路 - 若干 RoHS:否 制造商:Maxim Integrated 類型:Transport Devices 封裝 / 箱體:TECSBGA-256 數(shù)據(jù)速率:100 Mbps 電源電壓-最大:1.89 V, 3.465 V 電源電壓-最小:1.71 V, 3.135 V 電源電流:50 mA, 225 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| MAX3420EECJ | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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