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參數資料
| 型號： | ADM5170JN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | LINE DRIVER, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數： | 4/6頁 |
| 文件大小： | 133K |
| 代理商： | ADM5170JN |
Slew Rate Programming
T he slew rate for the ADM5170 is controlled by a single resistor
connected between the SRA pin and GND. T he slew rate is
approximately.
Slew Rate (V/
μ
s) =
20
/R
SRA
(k
)
Resistors between 2 k
and 10 k
may be used providing a slew
rate which may be varied from 10 V/
μ
s to 2.2 V/
μ
s. Figure 5 in the
T ypical Performance Characteristics section shows how the slew
rate varies with R
while Figure 8 shows how the transition time
(10% to 90%) varies with R
SRA
. Waveshaping of the output allows
the user to control the level of interference (near-end crosstalk)
which may be coupled to adjacent circuits in an interconnection.
T he recommended output characteristics for cable length and data
rate are given in the EIA RS-423A specifications.
Maximum Data Rate (kB/s) = 300/t (for rates from 1 kB/s to
100 kB/s).
Cable Length (feet) =
100
X t (Max Length =
4000
ft.)
where
t
is the transition time (in
μ
s) for the output to swing from
10% to 90% of its steady state values. T he absolute maximum data
rateis 100 kB/sand themaximum cable length is limited to 4000 ft.
Output Mode Programming
T he ADM5170 has two programmable output modes which
provide different output voltage levels. T he low output mode meets
the specifications of EIA standards RS-423A while the high output
mode meets the RS-232 specifications. T he high output mode
provides greater output swings and is suitable for driving lines
where higher attenuation levels must be tolerated. T his mode is
selected by connecting the mode select pins to the supplies, MS+ to
V
and MS– to V
. T he low output mode is selected by connect-
ing both mode select pins MS+ and MS– to GND. T his mode
provides a controlled output swing with lower output levels.
Inputs
Outputs
MS+
MS–
E N
Data
Output
GND
GND
V
DD
V
DD
X
GND
GND
V
SS
V
SS
X
0
0
0
0
1
0
1
0
1
X
5 V to 6 V (RS-423)
–5 V to –6 V (RS-423)
(V
DD
– 3 V) (RS-232)
1
(V
+ 3 V) (RS-232)
1
High Z
1
Minimum Output Level.
T ypical Application Circuit
A typical application circuit using a single driver in the ADM5170
is shown in Figure 4. T his circuit is suitable for either RS-232 or
RS-423 communication. An ADM5180 octal receiver is used to
translate the signal back to CMOS logic level at the receiving end.
V
L
V
H
1/8
ADM5170
EN
V
SS
V
DD
TIE TO GND
FOR RS-232
INPUT
RS-232/RS-422A
TRANSMISSION
+V
–V
R
SL
1/8
ADM5180
V
L
V
H
PIN FUNCT ION DE SCRIPT ION
Mnemonic
Function
V
DD
V
SS
GND
A
I
. . . H
I
A
O
. . . H
O
EN
MS+, MS–
Power Supply Input, +10 V
±
10%.
Power Supply Input, –10 V
±
10%.
Ground Pin. Must be connected to 0 V.
Digital Input to Drivers A to H.
RS-232/RS-423 Output from Drivers A to H.
Enable Pin. When high, all outputs are 3-stated.
Mode Select Inputs. Used to control the output
level swing. With MS+ & MS– connected to GND,
RS-423A output levels are selected. With MS+
connected to V
DD
and MS– connected to V
SS
,
RS-232 output levels are developed.
Slew Rate Adjust Input. An external resistor (2 k
to 10 k
) connected between this pin and GND is
used to control the Output Slew Rate (10 V/
μ
s to
2.2 V/
μ
s).
SRA
REV. 0
–4–
ADM5170
PIN CONFIGURAT IONS
DIP
GND
NC = NO CONNECT
NC
A
O
H
O
H
I
B
O
C
O
C
I
F
O
F
I
E
I
A
I
B
I
G
I
G
O
D
I
E
O
D
O
EN
V
DD
MS+
V
SS
SRA
MS–
NC
NC
NC
NC
13
18
1
2
28
27
5
6
7
24
23
22
3
4
26
25
8
21
9
20
10
19
11
12
17
16
14
15
TOP VIEW
(Not to Scale)
ADM5170
PLCC
NC = NO CONNECT
G
O
F
O
E
O
V
DD
MS+
F
I
E
I
B
O
C
O
D
O
EN
V
SS
C
I
D
I
B
I
A
I
H
O
H
I
G
I
A
O
S
N
N
M
G
N
N
N
26
27
28
4
2
3
15
18
17
16
12
14
13
25
24
21
20
19
23
22
TOP VIEW
(Not to Scale)
1
5
6
9
10
11
7
8
ADM5170
Figure 4. RS-232/RS-423A Typical Application Circuit
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|---|---|
| ADM5170JP | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM5170 | Octal, RS-232/RS-423 Line Driver(八通道,RS-232/RS-423線驅動器) |
| ADM5180AN | Octal, RS-232/RS-423 Line Receiver |
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| ADM5180JP | Octal, RS-232/RS-423 Line Receiver |
相關代理商/技術參數 |
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|---|---|
| ADM5170JNZ | 功能描述:IC TXRX RS232/423 OCTAL 28-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 標準包裝:27 系列:- 類型:收發器 驅動器/接收器數:3/3 規程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件 |
| ADM5170JP | 功能描述:IC TXRX RS232/423 OCTAL 28PLCC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 標準包裝:27 系列:- 類型:收發器 驅動器/接收器數:3/3 規程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件 |
| ADM5170JP-REEL | 功能描述:IC TXRX RS232/423 OCTAL 28PLCC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 標準包裝:27 系列:- 類型:收發器 驅動器/接收器數:3/3 規程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件 |
| ADM5180 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal, RS-232/RS-423 Line Receiver |
| ADM5180AN | 制造商:Analog Devices 功能描述:Octal Receiver RS-232/RS-423 28-Pin PDIP W 制造商:Analog Devices 功能描述:LINE RCVR 8RX 28PDIP W - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:8CH.RS232/423/422RECEIVER - Bulk 制造商:Analog Devices 功能描述:IC SEMICONDUCTORS ((NS)) |
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