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ISL3331 の電気的特性と機能

ISL3331のメーカーはIntersilです、この部品の機能は「Dual Protocol Transceivers」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL3331
部品説明 Dual Protocol Transceivers
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL3331 Datasheet, ISL3331 PDF,ピン配置, 機能
®
Data Sheet
ISL3330, ISL3331
May 20, 2008
FN6361.0
3.3V, ±15kV ESD Protected, Dual Protocol
(RS-232/RS-485) Transceivers
These devices are BiCMOS interface ICs that are user
configured as either a single RS-422/RS-485 differential
transceiver, or as a dual (2 Tx, 2 Rx) RS-232 transceiver.
In RS-232 mode, the on-board charge pump generates
RS-232 compliant ±5V Tx output levels, from a supply as low
as 3.15V. Four small 0.1µF capacitors are required for the
charge pump. The transceivers are RS-232 compliant, with
the Rx inputs handling up to ±25V.
In RS-485 mode, the transceivers support both the RS-485
and RS-422 differential communication standards. The
RS-485 receiver features "full failsafe" operation, so the Rx
output remains in a high state if the inputs are open or
shorted together. The RS-485 transmitter supports up to
three data rates, two of which are slew rate limited for
problem free communications. The charge pump disables in
RS-485 mode, thereby saving power, minimizing noise, and
eliminating the charge pump capacitors.
Both RS-232/RS-485 modes feature loopback and shutdown
functions. The loopback mode internally connects the Tx
outputs to the corresponding Rx input, which facilitates the
implementation of board level self test functions. The outputs
remain connected to the loads during loopback, where
connection problems (e.g., shorted connectors or cables)
can be detected. The shutdown mode disables the Tx and
Rx outputs, disables the charge pump if in RS-232 mode,
and places the IC in a low current (30µA) mode.
The ISL3331 is a QFN packaged device that offers
additional functionality, including a lower speed and edge
rate option (115kbps) for EMI sensitive designs, or to allow
longer bus lengths. It also features a logic supply voltage pin
(VL) that sets the VOH level of logic outputs, and the
switching points of logic inputs, to be compatible with
another supply voltage in mixed voltage systems. The QFN's
choice of active high or low Rx enable pins increases design
flexibility, allowing Tx/Rx direction control via a single signal
by connecting DEN and RXEN together.
For a dual port version of these devices, please see the
ISL3332/ISL3333 data sheet.
Features
• User Selectable RS-232 or RS-485/RS-422 Interface Port
(Two RS-232 Transceivers or One RS-485/RS-422
Transceiver)
• Operates From a Single 3.3V Supply
• ±15kV (HBM) ESD Protected Bus Pins (RS-232 or
RS-485)
• 5V Tolerant Logic Inputs
• True Flow-Through Pinouts Simplify Board Layouts
• Pb-Free (RoHS Compliant)
• Full Failsafe (Open/Short) Rx in RS-485/RS-422 Mode
• Loopback Mode Facilitates Board Self Test Functions
• User Selectable RS-485 Data Rates . . . . . . . . . . 20Mbps
- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 460kbps
- Slew Rate Limited (ISL3331 Only) . . . . . . . . . . 115kbps
• Fast RS-232 Data Rate . . . . . . . . . . . . . . . Up to 400kbps
• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . 30µA
• QFN Package Saves Board Space (ISL3331 Only)
• Logic Supply Pin (VL) Eases Operation in Mixed Supply
Systems (ISL3331 Only)
Applications
• Gaming Applications (e.g., Slot machines)
• Single Board Computers
• Factory Automation
• Security Networks
• Industrial/Process Control Networks
• Level Translators (e.g., RS-232 to RS-422)
• Point of Sale Equipment
Related Literature
• Application Note AN1401 “Implementing a Three Pin,
Half-Duplex, Dual Protocol Interface”
PART
NUMBER
ISL3330
ISL3331
NO. OF
PORTS
1
1
TABLE 1. SUMMARY OF FEATURES
PACKAGE OPTIONS
RS-485 DATA
RATE (bps)
RS-232 DATA
RATE (kbps)
20 Ld SSOP
20M, 460k
400
40 Ld QFN (6mmx6mm) 20M, 460k, 115k
400
VL PIN?
No
Yes
ACTIVE H or L
Rx ENABLE?
H
Both
LOW POWER
SHUTDOWN?
Yes
Yes
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2008. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL3331 pdf, ピン配列
ISL3330, ISL3331
TABLE 2. ISL3330 FUNCTION TABLE
485/232
0
INPUTS
ON RXEN DEN SLEW
1 0 0 N/A
RECEIVER
OUTPUTS
RA
High-Z
RB
High-Z
DRIVER OUTPUTS
YZ
High-Z High-Z
DRIVER
SPEED
(Mbps)
-
0 1 0 1 N/A High-Z High-Z ON ON 0.46
0 1 1 0 N/A ON
ON High-Z High-Z
-
0 1 1 1 N/A ON ON ON ON 0.46
0 0 0 1 N/A High-Z High-Z ON High-Z 0.46
0
0 1 0 N/A High-Z
ON
ON High-Z 0.46
0 0 1 1 N/A ON ON ON ON 0.46
X 0 0 0 X High-Z High-Z High-Z High-Z
-
1 1 0 0 X High-Z High-Z High-Z High-Z
-
1
X0
1 1/0 High-Z High-Z
ON
ON 20/0.46
1
X10X
ON High-Z High-Z High-Z
-
1 1 1 1 1/0 ON High-Z ON ON 20/0.46
1 0 1 1 1/0 ON High-Z ON ON 20/0.46
NOTES:
1. Charge pumps are on if in RS-232 mode and ON or DEN or RXEN are high.
2. Loopback is enabled when ON = 0, and DEN = RXEN = 1.
CHARGE
PUMPS LOOPBACK
(Note 1) (Note 2)
MODE
ON
OFF
RS-232
ON
OFF
RS-232
ON
OFF
RS-232
ON
OFF
RS-232
ON
OFF
RS-232
ON
OFF
RS-232
ON ON RS-232
OFF
OFF
Shutdown
OFF
OFF
RS-485
OFF
OFF
RS-485
OFF
OFF
RS-485
OFF
OFF
RS-485
OFF
ON RS-485
ISL3330 Truth Tables
485/232
0
0
0
0
0
RS-232 TRANSMITTING MODE
INPUTS (ON = 1)
OUTPUTS
DEN
1
DY
0
DZ
0
Y
1
Z
1
10110
11001
11100
0 X X High-Z High-Z
RS-485 TRANSMITTING MODE
INPUTS (ON = 1)
OUTPUTS
485/232 DEN
11
DY SLEW
01
Y
1
DATA RATE
Z (Mbps)
0 20
1 111 0 1
20
1 100 1 0
0.46
1 110 0 1
0.46
1 0 X X High-Z High-Z
-
485/232
0
0
0
0
0
0
RS-232 RECEIVING MODE
INPUTS (ON = 1)
OUTPUT
RXEN
1
A
0
B RA RB
011
10110
11001
11100
1
Open
Open
1
1
0 X X High-Z High-Z
485/232
1
1
1
1
RS-485 RECEIVING MODE
INPUTS (ON = 1)
OUTPUT
RXEN
1
B-A
-40mV
RA RB
1 High-Z
1 -200mV 0 High-Z
1 Open or Shorted together 1
High-Z
0 X High-Z High-Z
3 FN6361.0
May 20, 2008


3Pages


ISL3331 電子部品, 半導体
ISL3330, ISL3331
/
Typical Operating Circuits
+3.3V
C1
0.1µF
C2
0.1µF
+ 0.1µF
1
+ C1+
2
C1-
20
+ C2+
19
C2-
18
VCC
4
A
5kΩ
R
3
V+
+ C3
0.1µF
V- 11
17
C4
0.1µF
+
RA
B
Y
Z
VCC
5
5kΩ
6
16
R RB
12
RXEN
VCC
15
D DY
7
9
DEN
8
485/232
D
GND
10
14
DZ
13
ON
VCC
NOTE: PINOUT FOR SSOP
RS-232 MODE WITHOUT LOOPBACK
+3.3V
+ 0.1µF
C1
0.1µF
C2
0.1µF
1
+ C1+
2
C1-
20
+ C2+
19
C2-
4
A1
5kΩ
18
VCC
R
3
V+
+ C3
0.1µF
V- 11
C4
0.1µF
+
17
RA
5
B1
R
5kΩ
16 RB
6
Y
LB
Rx
D
12
RXEN 15
VCC
DY
Z
VCC
7
D
9
DEN
8
485/232
GND
10
14
DZ
13
ON
NOTE: PINOUT FOR SSOP
RS-232 MODE WITH LOOPBACK
+3.3V
C1
0.1µF
C2
0.1µF
A
B
+ 0.1µF
1
+ C1+
2
C1-
20
+ C2+
19
C2-
4
5
6
Y
7
Z
18
VCC
3
V+
+ C3
0.1µF
V- 11
C4
0.1µF
+
R
17
RA
12
RXEN
16
VCC
RB
D 15 DY
VCC
VCC
9
DEN
8
485/232
GND
10
14
SLEW
13
ON
VCC
NOTE: PINOUT FOR SSOP
RS-485 MODE WITHOUT LOOPBACK
+3.3V
+ 0.1µF
C1
0.1µF
C2
0.1µF
1
+ C1+
2
C1-
20
+ C2+
19
C2-
A4
B5
18
VCC
R
3
V+
+ C3
0.1µF
V- 11
17
C4
0.1µF
+
RA
Y
Z
VCC
VCC
LB
Rx 12
RXEN 16
VCC
6 RB
7 D 15 DY
9
DEN
8
485/232
GND
10
14
SLEW
13
ON
NOTE: PINOUT FOR SSOP
RS-485 MODE WITH LOOPBACK
6 FN6361.0
May 20, 2008

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
ISL3330

Dual Protocol Transceivers

Intersil
Intersil
ISL3331

Dual Protocol Transceivers

Intersil
Intersil
ISL3332

Dual Protocol (RS-232/RS-485) Transceivers

Intersil
Intersil
ISL3333

Dual Protocol (RS-232/RS-485) Transceivers

Intersil
Intersil


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