MAX3227 LINE DRIVER/RECEIVER Datasheet

MAX3227 Datasheet, PDF, Equivalent


Part Number

MAX3227

Description

3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER

Manufacture

etcTI

Total Page 16 Pages
Datasheet
Download MAX3227 Datasheet


MAX3227
www.ti.com
MAX3227
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD PROTECTION
SLLS673A – AUGUST 2005 – REVISED FEBRUARY 2006
FEATURES
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V VCC Supply
Operates at Least 1 Mbit/s
Low Standby Current . . . 1 µA Typ
External Capacitors . . . 4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Designed to Be Interchangeable With Maxim™
MAX3227
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection for RS-232 I/O Pins
±15 kV – Human-Body Model
±8 kV – IEC61000-4-2, Contact Discharge
±8 kV – IEC61000-4-2, Air-Gap Discharge
Auto-Powerdown Plus Feature Automatically
Disables Drivers for Power Savings
Packaged in Plastic Shrink Small-Outline
Package
APPLICATIONS
Battery-Powered, Hand-Held, and Portable
Equipment
PDAs and Palmtop PCs
Notebooks, Sub-Notebooks, and Laptops
Digital Cameras
Mobile Phones and Wireless Devices
DB PACKAGE
(TOP VIEW)
READY
C1+
V+
C1−
C2+
C2−
V−
RIN
1
2
3
4
5
6
7
8
16 FORCEOFF
15 VCC
14 GND
13 DOUT
12 FORCEON
11 DIN
10 INVALID
9 ROUT
DESCRIPTION/ORDERING INFORMATION
The MAX3227 consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15-kV ESD
protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of
TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the
serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to
5.5-V supply. This device operates at data-signaling rates of 1 Mbit/s in normal operating mode and a maximum
of 30-V/µs driver output slew rate. This device also features a logic-level output (READY) that asserts when the
charge pump is regulating and the device is ready to begin transmitting.
The MAX3227 achieves a 1-µA supply current using the auto-powerdown plus feature. This device automatically
enters a low-power powerdown mode when the RS-232 cable is disconnected or the drivers of the connected
peripherals are inactive for more than 30 s. They turn on again when they sense a valid transition at any driver or
receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.
The MAX3227C is characterized for operation from 0°C to 70°C. The MAX3227I is characterized for operation
from –40°C to 85°C.
TA
0°C to 70°C
–40°C to 85°C
AVAILABLE OPTIONS
PACKAGED DEVICE
SHRINK SMALL OUTLINE
(DB) (1)
MAX3227CDB
MAX3227IDB
(1) The DB package is available taped and reeled. Add the suffix R to
device type (e.g., MAX3227CDBR).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2006, Texas Instruments Incorporated

MAX3227
MAX3227
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD PROTECTION
SLLS673A – AUGUST 2005 – REVISED FEBRUARY 2006
FUNCTION TABLE(1)
www.ti.com
INPUT CONDITIONS
FORCEON
FORCEOFF
RECEIVER
OR
DRIVER
EDGE
WITHIN
30 s
H H NO
H H NO
L H YES
L H YES
L H NO
L H NO
XLX
XLX
INVALID
INVALID
INVALID
INVALID
X
X
OUTPUT STATES
VALID
RS-232
LEVEL
PRESENT AT
RECEIVER
DRIVER
RECEIVER
INVALID
Auto-Powerdown Plus Conditions
NO
Active
Active
L
YES
Active
Active
H
NO
Active
Active
L
YES
Active
Active
H
NO Z Active L
YES
Z Active H
NO Z Active
YES
Z Active
Auto-Powerdown Conditions
L
H
NO Z Active L
YES
Active
Active
H
READY
H
H
H
H
L
L
L
L
L
H
OPERATING MODE
Normal operation,
auto-powerdown plus disabled
Normal operation,
auto-powerdown plus disabled
Normal operation,
auto-powerdown plus enabled
Normal operation,
auto-powerdown plus enabled
Powerdown,
auto-powerdown plus enabled
Powerdown,
auto-powerdown plus enabled
Manual powerdown
Manual powerdown
Powerdown,
auto-powerdown enabled
Normal operation,
auto-powerdown enabled
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
2 Submit Documentation Feedback


Features www.ti.com MAX3227 3-V TO 5.5-V SINGLE- CHANNEL RS-232 LINE DRIVER/RECEIVER WIT H ±15-kV ESD PROTECTION SLLS673A – A UGUST 2005 – REVISED FEBRUARY 2006 F EATURES • Meets or Exceeds the Requir ements of TIA/EIA-232-F and ITU v.28 St andards • Operates With 3-V to 5.5-V VCC Supply • Operates at Least 1 Mbit /s • Low Standby Current . . . 1 µA Typ • External Capacitors . . . 4 × 0.1 µF • Accepts 5-V Logic Input Wit h 3.3-V Supply • Designed to Be Inter changeable With Maxim™ MAX3227 • La tch-Up Performance Exceeds 100 mA Per J ESD 78, Class II • ESD Protection for RS-232 I/O Pins – ±15 kV – Human- Body Model – ±8 kV – IEC61000-4-2, Contact Discharge – ±8 kV – IEC61 000-4-2, Air-Gap Discharge • Auto-Pow erdown Plus Feature Automatically Disab les Drivers for Power Savings • Packa ged in Plastic Shrink Small-Outline Pac kage APPLICATIONS • Battery-Powered, Hand-Held, and Portable Equipment • PDAs and Palmtop PCs • Notebooks, Sub-Notebooks, and Laptops • Digital Cameras • Mobile Phones and Wireless Device.
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