ICL3238EIAZ Intersil, ICL3238EIAZ Datasheet

IC TXRX RS232 3-5.5V 28SSOP

ICL3238EIAZ

Manufacturer Part Number
ICL3238EIAZ
Description
IC TXRX RS232 3-5.5V 28SSOP
Manufacturer
Intersil
Type
Transceiverr
Datasheet

Specifications of ICL3238EIAZ

Number Of Drivers/receivers
5/3
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
28-SSOP
Peak Reflow Compatible (260 C)
Yes
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ICL3238EIAZ
Manufacturer:
Intersil
Quantity:
135
Part Number:
ICL3238EIAZ
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ICL3238EIAZ-T
Manufacturer:
INTERSIL
Quantity:
20 000
±15kV ESD Protected, +3V to +5.5V, 10nA,
250kbps, RS-232 Transceiver with
Enhanced Automatic Powerdown
The Intersil ICL3238E contains 3.0V to 5.5V powered
RS-232 transmitters/receivers which meet ElA/TIA-232 and
V.28/V.24 specifications, even at V
provides
Human Body Model) on transmitter outputs and receiver
inputs (RS-232 pins). Targeted applications are cell phones,
Palmtops, and data cables 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 10nA trickle. Small footprint 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 providing
compatibility with popular PC communication software.
The ICL3238E is a 5 driver, 3 receiver device optimized for
DCE applications with full hardware handshaking. It also
includes a noninverting always-active receiver for RING
INDICATOR monitoring.
This device, features 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 30s. The
ICL3238E powers back up, automatically, whenever it
senses a transition on any transmitter or receiver input.
The transmitter and logic inputs include active feedback
resistors that retain the input state once driven to a valid
logic level.
Table 1 summarizes the features of the ICL3238E, while
Application Note AN9863 summarizes the features of each
device comprising the ICL32XXE 3V family.
NUMBER
ICL3238E
PART
±
15kV ESD protection (IEC61000-4-2 Air Gap and
NO. OF
Tx.
5
NO. OF
®
Rx.
3
1
CC
MONITOR Rx.
Data Sheet
= 3.0V. Additionally, it
(R
NO. OF
OUTB
1
)
TABLE 1. SUMMARY OF FEATURES
(kbps)
DATA
RATE
1-888-INTERSIL or 321-724-7143
250
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Rx. ENABLE
FUNCTION?
Features
• Pb-Free Available as an Option (see Ordering Info)
• ESD Protection for RS-232 I/O Pins to
• Active Feedback Resistors on T
• Manual and Enhanced Automatic Powerdown Features
• Pin Compatible Replacement for MAX3238E, MAX3238,
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• RS-232 Compatible Outputs at 2.7V Supply
• Flow Through Pinout
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
• Receiver and Transmitter Hysteresis For Improved Noise
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . 10nA
Applications
• Any System Requiring RS-232 Communication Ports
No
SP3238E
Capacitors
Immunity
- Battery Powered, Hand-Held, and Portable Equipment
- Data Cradles
- Modems, Printers and other Peripherals
- Cellular/Mobile Phones, Data Cables
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OUTPUT?
July 2004
READY
Copyright Intersil Americas Inc. 2003, 2004. All Rights Reserved
No
MANUAL
POWER-
DOWN?
Yes
X
and Logic Inputs.
ICL3238E
±
15kV (IEC61000)
POWERDOWN
AUTOMATIC
FUNCTION?
ENHANCED
FN6012.3
Yes
µ
s

Related parts for ICL3238EIAZ

ICL3238EIAZ Summary of contents

Page 1

... All other trademarks mentioned are the property of their respective owners. ICL3238E July 2004 FN6012.3 ± 15kV (IEC61000) and Logic Inputs. X ENHANCED MANUAL AUTOMATIC READY POWER- POWERDOWN OUTPUT? DOWN? FUNCTION? No Yes Yes | Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2003, 2004. All Rights Reserved s µ ...

Page 2

... OUT ICL3238EIAZ R3 18 (Note) OUT ICL3238EIAZ-T (Note OUTB 15 INVALID ICL3238EIV-T ICL3238EIVZ-T (Note) NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is 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-020B ...

Page 3

Typical Operating Circuit +3.3V + 0.1µF NOTE 3 TTL/CMOS LOGIC LEVELS CONTROL LOGIC NOTES: 2. The negative terminal of C can be connected to either For V = 3.15V (3.3V -5%), use ...

Page 4

Absolute Maximum Ratings V to Ground -0. ...

Page 5

Electrical Specifications Test Conditions: V Specified. Typicals are at T PARAMETER ENHANCED AUTOMATIC POWERDOWN (FORCEON = GND, FORCEOFF = V Receiver Input Thresholds to (Figure 6) INVALID High Receiver Input Thresholds to (Figure 6) INVALID Low INVALID Output Voltage Low ...

Page 6

... V.28 specifications. The circuit is divided into three sections: The charge pump, the transmitters, and the receivers. Charge-Pump Intersil’s new ICL32XXE family utilizes regulated on-chip dual charge pumps as voltage doublers, and voltage inverters to generate ±5.5V transmitter supplies from a V supply as low as 3.0V. This allows these devices to maintain RS-232 compliant output levels over the ± ...

Page 7

RING INDICATOR monitoring. Standard receivers driving powered down peripherals must be disabled to prevent current flow through the peripheral’s protection diodes (see Figures 2 and 3). This renders them useless for ...

Page 8

FORCEOFF switches high. The rising edge of the Master Powerdown signal forces the device to power up, and the ICL3238E returns to enhanced automatic powerdown mode an RC time constant after this rising edge. The time constant isn’t critical, because ...

Page 9

RECEIVER INPUTS TRANSMITTER INPUTS TRANSMITTER OUTPUTS t INVH INVALID t INVL OUTPUT FIGURE 8. ENHANCED AUTOMATIC POWERDOWN, AND INVALID TIMING DIAGRAMS Emulating Standard Automatic Powerdown If enhanced automatic powerdown isn’t desired, the user can implement ...

Page 10

When using minimum required capacitor values, make sure that capacitor values do not degrade excessively with temperature doubt, use capacitors with a larger nominal value. The capacitor’s equivalent series resistance (ESR) usually rises at low temperatures and it ...

Page 11

Interconnection with 3V and 5V Logic The ICL3238E directly interfaces with 5V CMOS and TTL logic families. Nevertheless, with the ICL32XX at 3.3V, and the logic supply at 5V, AC, HC, and CD4000 outputs can drive ICL32XX inputs, but ICL32XX ...

Page 12

Typical Performance Curves TRANSMITTER AT 250kbps OTHER TRANSMITTERS AT 30kbps 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 14. TRANSMITTER OUTPUT VOLTAGE vs LOAD CAPACITANCE ...

Page 13

Shrink Small Outline Plastic Packages (SSOP) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α µ 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined ...

Page 14

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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