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ISL3333 の電気的特性と機能

ISL3333のメーカーはIntersilです、この部品の機能は「Dual Protocol (RS-232/RS-485) Transceivers」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL3333
部品説明 Dual Protocol (RS-232/RS-485) Transceivers
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL3333 Datasheet, ISL3333 PDF,ピン配置, 機能
¬
Data Sheet
ISL3332, ISL3333
May 27, 2008
FN6362.0
3.3V, ±15kV ESD Protected, Two Port, Dual
Protocol (RS-232/RS-485) Transceivers
The ISL3332, ISL3333 are two port interface ICs where each
port can be independently configured as a single
RS-485/422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232
transceiver. With both ports set to the same mode, two
RS-485/RS-422 transceivers, or four RS-232 transceivers
are available.
Features
±15kV (HBM) ESD Protected Bus Pins (RS-232 or
RS-485)
• Operates From a Single 3.3V Supply
• Two Independent Ports, Each User Selectable for RS-232
(2 Transceivers) or RS-485/RS-422 (1 Transceiver)
• True Flow-Through Pinouts Simplify Board Layouts
If either port is in RS-232 mode, the onboard charge pump
generates RS-232 compliant ±5V Tx output levels from a
single VCC supply as low as 3.15V. 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
receivers feature "full failsafe" operation, so the Rx outputs
remain in a high state if the inputs are open or shorted
together. The transmitters support up to three data rates, two
of which are slew rate limited for problem free
communications. The charge pump disables when both
ports are in RS-485 mode, thereby saving power, minimizing
noise, and eliminating the charge pump capacitors.
Both RS-232 and RS-485 modes feature loopback and
shutdown functions. Loopback internally connects the Tx
outputs to the corresponding Rx input, to facilitate board
level self test implementation. The outputs remain connected
to the loads during loopback, so connection problems (e.g.,
shorted connectors or cables) can be detected. Shutdown
mode disables the Tx and Rx outputs, disables the charge
pumps, and places the IC in a low current (35µA) mode.
The ISL3333 is a QFN packaged device that includes two
additional user selectable, lower speed and edge rate
options for EMI sensitive designs, or to allow longer bus
lengths. It also features a logic supply 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 also adds RS-232 mode Tx EN
pins (DEN), and active low Rx enable pins (RXEN) to
increase design flexibility. In RS-485 applications, active low
Rx enable pins allow Tx/Rx direction control, via a single
signal per port, by connecting the corresponding DE and
RXEN pins together.
• Pb-free (RoHS compliant)
• Full Failsafe (Open/Short) Rx in RS-485/422 Mode
• Loopback Mode Facilitates Board Self Test Functions
• User Selectable RS-485 Data Rates (ISL3333 Only)
- Fast Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Mbps
- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 460kbps
- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 115kbps
• Fast RS-232 Data Rate . . . . . . . . . . . . . . . Up to 400kbps
• RS-232 Tx and Rx Enable Pins (ISL3333 Only)
• Small Charge Pump Caps . . . . . . . . . . . . . . . . . 4 x 0.1µF
• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . .35µA
• QFN Package Saves Board Space (ISL3333 Only)
• Logic Supply Pin (VL) Eases Operation in Mixed Supply
Systems (ISL3333 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
• Dual Channel RS-485 Interfaces
For a single port version of these devices, please see the
ISL3330, ISL3331 data sheet.
TABLE 1. SUMMARY OF FEATURES
NO. OF
RS-485 DATA RS-232 DATA
RS-232 Tx ACTIVE H or L LOW POWER
PART NUMBER PORTS PACKAGE OPTIONS RATE (bps) RATE (kbps) VL PIN? ENABLE? Rx ENABLE? SHUTDOWN?
ISL3332
2 28 Ld SSOP
20M
400 NO NO
NONE
YES
ISL3333
2 40 Ld QFN (6 x 6mm) 20M, 460k, 115k
400
YES
YES
L
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





ISL3333 pdf, ピン配列
ISL3332, ISL3333
TABLE 2. ISL3332 FUNCTION TABLE
SEL1 or 2
0
INPUTS
ON/OFF
1
DE 1 or 2
N.A.
RECEIVER OUTPUTS
RA RB
ON ON
DRIVER OUTPUTS
YZ
ON ON
CHARGE PUMPS
(NOTE 1)
ON
MODE
RS-232
X
0
X
High-Z
High-Z
High-Z
High-Z
OFF
Shutdown
1
1
0
ON
High-Z *
High-Z
High-Z
OFF
RS-485
1
1
1
ON High-Z * ON
ON
OFF
RS-485
NOTE:
1. Charge pumps are off if SEL1 = SEL2 = 1, or if ON/OFF = 0. If ON = 1, and either port is programmed for RS-232 mode, then the charge pumps
are on.
ISL3332 Truth Tables (FOR EACH PORT)
RS-232 TRANSMITTING MODE
INPUTS
OUTPUTS
SEL1 or 2 ON/OFF
01
DY
0
DZ
0
Y
1
Z
1
0 10110
0 11001
0 11100
0 0 X X High-Z High-Z
RS-485 TRANSMITTING MODE
INPUTS
OUTPUTS
SEL1 or 2 ON/OFF DE1 or 2
1 11
DY
0
Y
1
Z
0
1 11101
1 1 0 X High-Z High-Z
1 0 X X High-Z High-Z
RS-232 RECEIVING MODE
INPUTS
OUTPUT
SEL1 or 2 ON/OFF
01
A
0
B RA RB
011
0 10110
0 11001
0 11100
0 1 Open Open 1 1
0 0 X X High-Z High-Z
RS-485 RECEIVING MODE
INPUTS
OUTPUT
SEL1 or 2 ON/OFF
11
B-A
-40mV
RA RB *
1 High-Z
11
-200mV
0 High-Z
1 1 Open or Shorted together 1 High-Z
10
X High-Z High-Z
* Internally pulled high through a 40kΩ resistor.
3 FN6362.0
May 27, 2008


3Pages


ISL3333 電子部品, 半導体
ISL3332, ISL3333
Typical Operating Circuits
RS-232 MODE WITHOUT LOOPBACK
+3.3V
C1
0.1µF
C2
0.1µF
+ 0.1μF
1
+ C1+
2
C1-
28
+ C2+
27
C2-
26
VCC
4
A1
5kΩ
R
3
V+
+ C3
0.1µF
V- 15
C4
0.1µF
+
24 RA1
B1
Y1
Z1
VCC
5
5kΩ
6
R
D
25 RB1
RXEN1
(QFN ONLY)
22
DY1
7
DEN1
(QFN ONLY)
D
23
21
LB
8
SEL1
20
ON/OFF
GND
14
DZ1
VCC
VCC
NOTE: PINOUT FOR SSOP
SAME FOR PORT 2.
RS-485 MODE WITHOUT LOOPBACK
+3.3V
C1
0.1µF
C2
0.1µF
A1
B1
+ 0.1µF
1
+ C1+
2
C1-
28
+
C2+
27
C2-
4
5
6
Y1
7
Z1
26
VCC
R
D
3
V+
+ C3
0.1µF
V- 15
C4
0.1µF
+
24 RA1
RXEN1
(QFN ONLY)
25 RB1
22 DY1
VCC
VCC
23 DE1
8
SEL1
21
LB
20
ON/OFF
GND
14
VCC
VCC
NOTE: PINOUT FOR SSOP
SAME FOR PORT 2.
RS-232 MODE WITH LOOPBACK
+3.3V
C1
0.1µF
C2
0.1µF
+ 0.1µF
1
+ C1+
2
C1-
28
+ C2+
27
C2-
26
VCC
A1 4
R
5kΩ
3
V+
+ C3
0.1µF
V- 15
C4
0.1µF
+
24
RA1
B1 5
R
5kΩ
LB
Rx
25
RB1
6
Y1
22
D DY1
Z1
VCC
7
DEN1
(QFN ONLY)
D
23
21
LB
8
SEL1
20
ON/OFF
GND
14
DZ1
GND
VCC
NOTE: PINOUT FOR SSOP
SAME FOR PORT 2.
RS-485 MODE WITH LOOPBACK
+3.3V
+ 0.1µF
C1
0.1µF
C2
0.1µF
1
+ C1+
2
C1-
28
+ C2+
27
C2-
A1 4
B1 5
26
VCC
R
3
V+
+ C3
0.1µF
V- 15
24
C4
0.1µF
+
RA1
LB
Rx
6
Y1
7
Z1
25
RB1
D 22 DY1
VCC
VCC
23 DE1
8
SEL1
21
LB
20
ON/OFF
GND
14
GND
VCC
NOTE: PINOUT FOR SSOP
SAME FOR PORT 2.
6 FN6362.0
May 27, 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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