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ISL83387EIVZ

P1-P3P4-P6P7-P9P10-P12P13-P13
1
®
FN6040.1
ISL83387E
+/-15kV ESD Protected, +3V to +5.5V,
1Microamp, 250kbps, RS-232
Transceivers with Enhanced Automatic
Powerdown and a Separate Logic Supply
The Intersil ISL83387E is a 3.0V to 5.5V powered RS-232
transceiver which meets ElA/TIA-232 and V.28/V.24
specifications, even at V
CC
= 3.0V. Additionally, it provides
±15kV ESD protection (IEC61000-4-2 Air Gap and Human
Body Model) on transmitter outputs and receiver inputs
(RS-232 pins). Targeted applications are PDAs, Palmtops,
and notebook and laptop computers where the low
operational, and even lower standby power consumption is
critical. Efficient on-chip charge pumps, coupled with manual
and enhanced automatic powerdown functions, reduce the
standby supply current to a 1µA trickle. TSSOP packaging,
and the use of small, low value capacitors ensure board
space savings as well. Data rates greater than 250kbps are
guaranteed at worst case load conditions.
The ISL83387E features a V
L
pin that adjusts the logic pin
output levels and input thresholds to values compatible with
the V
CC
powering the external logic (e.g., a UART).
This device includes an enhanced automatic powerdown
function which powers down the on-chip power-supply and
driver circuits. This occurs when all receiver and transmitter
inputs detect no signal transitions for a period of 30 seconds.
It power back up, automatically, whenever it senses a
transition on any transmitter or receiver input.
Table 1 summarizes the features of the ISL83387E, while
Application Note AN9863 summarizes the features of each
device comprising the 3V RS-232 family.
Features
•V
L
Supply Pin for Compatibility with Mixed Voltage
Systems
• ESD Protection for RS-232 I/O Pins to
±15kV (IEC61000)
• Low Power, Pin Compatible Upgrade for MAX3387E
• Manual and Enhanced Automatic Powerdown Features
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• On-Chip Charge Pumps Require Only Four External
0.1µF Capacitors
• Receivers Stay Active in Powerdown
• Very Low Supply Current . . . . . . . . . . . . . . . . . . . . 300µA
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . < 1µA
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Digital Cameras
- PDA’s and PDA Cradles
- Cellular/Mobile Phones
Ordering Information
PART NO.
(BRAND)
TEMP.
RANGE (°C) PACKAGE
PKG.
DWG. #.
ISL83387EIV
(83387EIV)
-40 to 85 24 Ld TSSOP M24.173
ISL83387EIV-T
(83387EIV)
-40 to 85 Tape and Reel M24.173
ISL83387EIVZ (Note)
(83387EIVZ)
-40 to 85 24 Ld TSSOP
(Pb-free)
M24.173
ISL83387EIVZ-T (Note)
(83387EIVZ)
-40 to 85 Tape and Reel
(Pb-free)
M24.173
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Data Sheet July 8, 2005
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. 2003, 2005. All Rights Reserved
2
FN6040.1
July 8, 2005
TABLE 1. SUMMARY OF FEATURES
PART NUMBER
NO. OF
Tx.
NO. OF
Rx.
DATA RATE
(kbps)
Rx. ENABLE
FUNCTION?
V
L
LOGIC
SUPPLY PIN?
MANUAL
POWER- DOWN?
ENHANCED AUTOMATIC
POWERDOWN FUNCTION?
ISL83387E 3 3 250 NO YES YES YES
Pinout
ISL83387E (TSSOP)
TOP VIEW
C1+
V+
C1-
C2+
C2-
V-
T1
IN
T2
IN
INVALID
FORCEON
R3
OUT
FORCEOFF
GND
T1
OUT
T2
OUT
T3
OUT
R2
IN
V
L
R1
OUT
R2
OUT
V
CC
R1
IN
R3
IN
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
T3
IN
Pin Descriptions
PIN FUNCTION
V
CC
System power supply input (3.0V to 5.5V).
V+ Internally generated positive transmitter supply (+5.5V).
V- Internally generated negative transmitter supply (-5.5V).
GND Ground connection.
C1+ External capacitor (voltage doubler) is connected to this lead.
C1- External capacitor (voltage doubler) is connected to this lead.
C2+ External capacitor (voltage inverter) is connected to this lead.
C2- External capacitor (voltage inverter) is connected to this lead.
T
IN
TTL/CMOS compatible transmitter Inputs. The switching point is a function of the V
L
voltage.
T
OUT
±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs.
R
IN
±15kV ESD Protected, RS-232 compatible receiver inputs.
R
OUT
TTL/CMOS level receiver outputs. Swings between GND and V
L
.
V
L
Logic-Level Supply. All TTL/CMOS inputs and outputs are powered by this supply.
INVALID
Active low output that indicates if no valid RS-232 levels are present on any receiver input. Swings between GND and V
L
.
FORCEOFF
Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
The switching point is a function of the V
L
voltage.
FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF
must be high). The
switching point is a function of the V
L
voltage.
ISL83387E
3
FN6040.1
July 8, 2005
Typical Operating Circuit
23
V
CC
T1
OUT
T2
OUT
T3
OUT
T1
IN
T2
IN
T3
IN
T
1
T
2
T
3
0.1µF
+
0.1µF
+
0.1µF
7
8
21
20
10
19
1
3
2
6
V+
V-
C1+
C1-
C2+
C2-
+
0.1µF
4
5
R1
OUT
R1
IN
18
5kΩ
R2
OUT
R2
IN
17
13
5kΩ
R3
OUT
R3
IN
16
12
5kΩ
14
C
1
C
2
+
C
3
C
4
FORCEON
FORCEOFF
11
GND
24
+3.3V
+
0.1µF
22
V
CC
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
RS-232
LEVELS
R
1
R
2
R
3
9
INVALID
TO POWER
CONTROL LOGIC
V
L
15
LOGIC V
CC
+
0.1µF
ISL83387E
P1-P3P4-P6P7-P9P10-P12P13-P13

ISL83387EIVZ

Mfr. #:
Buy ISL83387EIVZ
Manufacturer:
Renesas / Intersil
Description:
RS-232 Interface IC W/ANNEAL RS232 3V 3D /3R 15KV SHTDWN 24LD
Lifecycle:
New from this manufacturer.
Delivery:
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