- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄351991 > 4608X-102-820 WIDERSTAND NETZWERK DICKFILM 82R 5ST PDF資料下載
參數(shù)資料
| 型號： | 4608X-102-820 |
| 英文描述： | WIDERSTAND NETZWERK DICKFILM 82R 5ST |
| 中文描述： | WIDERSTAND NETZWERK DICKFILM 82R 5ST |
| 文件頁數(shù)： | 42/62頁 |
| 文件大?。?/td> | 1883K |
| 代理商： | 4608X-102-820 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁當(dāng)前第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁
Specifications are subject to change without notice.
323
For designers developing high performance systems, exact
termination resistances which account for line loading may be
desirable. This resistance (or equivalent resistance) can be cal-
culated using the formula:
Rterm =
Zo
1 + Cd / Co
where Zo is the characteristic impedance of the line, Cd is the
total capacitance associated with the receiving devices (typically
5 pF per input gate) or other loads off the line, and Co is the
intrinsic capacitance of the line.
The series termination technique suppresses reflections at the
driving device should any waveforms be reflected back from the
driven end of the line. Series termination preserves power since
there is no current path to ground or Vcc as in the other meth-
ods. However, this technique results in incident signals that
transition slowly. It is also not appropriate for distributed loads
due to the half-amplitude waveforms which exist at intermediate
points along the line.
RC termination represents a compromise between power con-
sumption and effect on performance. Its principle of operation is
similar to parallel termination, but the capacitor blocks the DC
component of the signal, thus reducing power consumption.
However, the effectiveness of this method depends on the fre-
quency and duty cycle of the application. RC termination also
can be an expensive technique if implemented using discrete
components rather than a network.
Typical Usage
While not every address, data and control line may require
pull-up/pull-down or termination as part of the system’s design,
the table below shows common practice for some popular
devices.
V
MICRO-
MICROPROCESSORS
CONTROLLERS
68000
68020
80286 80386
68HC11
8051
No. address lines
23
32
24
32
Termination
0
32
0
32
No. data lines
16
32
16
32
Termination
0
32
0
32
No. control lines
21
27
13
15
Termination
0
27
0
15
Total I/O lines
60
91
53
79
38
32
Termination
0
91
0
79
0
1
8
702
1
9
1
10
701
NO. OF LINES
BOURNS P/N
PACKAGE
7
4608H-701-RC/CC
High Profile
8
4609H-701-RC/CC
Conformal
9
4610H-701-RC/CC
SIP
NO. OF LINES
BOURNS P/N
PACKAGE
8
4610H-702-RC/CC
High Profile
Conformal SIP
For all RC terminators, standard R values are 50, 68, 75 and 100
ohms. Standard values for C are 47, 100, 500 and 1000pF. See
data sheet to select custom combinations of R and C.
REFERENCES:
1. Blood, W.R., MECL System Design Handbook, Motorola, Inc., 1983.
2. F100K ECL Data Book, Fairchild Semiconductor Corp., 1986.
3. MECL Device Data, Motorola, Inc., 1987.
RC Terminator Networks 700 Series
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 4608X103 | Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits |
| 4608X104 | Interface IC |
| 4609H101 | Interface IC |
| 4609H102 | Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits |
| 4609H103 | Interface IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 4608X-102-820LF | 功能描述:電阻器網(wǎng)絡(luò)與陣列 8pins 82ohms Isolated RoHS:否 制造商:Vishay/Thin Film 產(chǎn)品類型:Networks 電路類型:Divider 電阻器數(shù)量: 電阻數(shù)值:10 kOhms 容差:0.1 % 溫度系數(shù): 管腳數(shù)量:3 工作溫度范圍:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引線間隔: 端接類型:SMD/SMT 封裝:Reel |
| 4608X-102-820LF | 制造商:Bourns Inc 功能描述:RESISTORS NETWORKS THICK FILM NETWORK C |
| 4608X-102-821 | 功能描述:電阻器網(wǎng)絡(luò)與陣列 8Pin 2% 820ohm Isolated RoHS:否 制造商:Vishay/Thin Film 產(chǎn)品類型:Networks 電路類型:Divider 電阻器數(shù)量: 電阻數(shù)值:10 kOhms 容差:0.1 % 溫度系數(shù): 管腳數(shù)量:3 工作溫度范圍:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引線間隔: 端接類型:SMD/SMT 封裝:Reel |
| 4608X-102-821LF | 功能描述:電阻器網(wǎng)絡(luò)與陣列 8pins 820ohms Isolated RoHS:否 制造商:Vishay/Thin Film 產(chǎn)品類型:Networks 電路類型:Divider 電阻器數(shù)量: 電阻數(shù)值:10 kOhms 容差:0.1 % 溫度系數(shù): 管腳數(shù)量:3 工作溫度范圍:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引線間隔: 端接類型:SMD/SMT 封裝:Reel |
| 4608X-102-822 | 功能描述:電阻器網(wǎng)絡(luò)與陣列 8Pin 2% 8.2K Isolated RoHS:否 制造商:Vishay/Thin Film 產(chǎn)品類型:Networks 電路類型:Divider 電阻器數(shù)量: 電阻數(shù)值:10 kOhms 容差:0.1 % 溫度系數(shù): 管腳數(shù)量:3 工作溫度范圍:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引線間隔: 端接類型:SMD/SMT 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。