MAX3221-EP LINE DRIVER/RECEIVER Datasheet

MAX3221-EP Datasheet, PDF, Equivalent


Part Number

MAX3221-EP

Description

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

Manufacture

etcTI

Total Page 15 Pages
Datasheet
Download MAX3221-EP Datasheet


MAX3221-EP
www.ti.com
MAX3221-EP
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD PROTECTION
SLLS751 – OCTOBER 2006
FEATURES
Controlled Baseline
– One Assembly/Test Site, One Fabrication
Site
Extended Temperature Performance of –55°C
to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
Enhanced Product-Change Notification
Qualification Pedigree (1)
RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM)
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 up to 250 kbit/s
One Driver and One Receiver
Low Standby Current . . . 1 µA Typical
External Capacitors . . . 4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Alternative High-Speed Pin-Compatible
Device (1 Mbit/s)
– SNx5C3221
(1) Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
Auto-Powerdown Feature Automatically
Disables Drivers for Power Savings
APPLICATIONS
Battery-Powered, Hand-Held, and Portable
Equipment
PDAs and Palmtop PCs
Notebooks, Subnotebooks, and Laptops
Digital Cameras
Mobile Phones and Wireless Devices
DB PACKAGE
(TOP VIEW)
EN
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 MAX3221 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. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver
output slew rate.
ORDERING INFORMATION
TA
–55°C to 125°C
PACKAGE (1)
SSOP – DB
Reel of 2000
ORDERABLE PART NUMBER
TOP-SIDE MARKING
MAX3221MDBREP
MB3221M
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package
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.
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 © 2006, Texas Instruments Incorporated

MAX3221-EP
MAX3221-EP
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD PROTECTION
SLLS751 – OCTOBER 2006
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
Flexible control options for power management are available when the serial port is inactive. The
auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of
operation, if the device does not sense a valid RS-232 signal on the receiver input, the driver output is disabled.
If FORCEOFF is set low and enable (EN) is high, both the driver and receiver are shut off, and the supply
current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes the
auto-powerdown condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are
high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the
receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID
is high (valid data) if the receiver input voltage is greater than 2.7 V or less than –2.7 V, or has been between
–0.3 V and 0.3 V for less than 30 µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3 V
and 0.3 V for more than 30 µs. See Figure 5 for receiver input levels.
FUNCTION TABLES
EACH DRIVER(1)
INPUTS
OUTPUT
DIN
FORCEON FORCEOFF
VALID RIN
RS-232 LEVEL
DOUT
DRIVER STATUS
XX
L
XZ
Powered off
LH
HH
H
H
X H Normal operation with
X L auto-powerdown disabled
LL
HL
H
H
Yes H Normal operation with
Yes L auto-powerdown enabled
LL
HL
H
H
No Z Powered off by auto-powerdown
No Z
feature
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
RIN
L
H
X
Open
EACH RECEIVER(1)
INPUTS
EN
VALID RIN
RS-232 LEVEL
LX
LX
HX
L No
OUTPUT
ROUT
H
L
Z
H
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
(off), Open = disconnected input or connected driver off
LOGIC DIAGRAM (POSITIVE LOGIC)
11
DIN
13
DOUT
16
FORCEOFF
12
FORCEON
Auto-powerdown
10
INVALID
9
ROUT
8
RIN
1
EN
2 Submit Documentation Feedback


Features www.ti.com MAX3221-EP 3-V TO 5.5-V SING LE-CHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD PROTECTION SLLS751 – OCTOBER 2006 FEATURES • Controlled Baseline – One Assembly/Test Site, O ne Fabrication Site • Extended Temper ature Performance of –55°C to 125°C • Enhanced Diminishing Manufacturing Sources (DMS) Support • Enhanced Pro duct-Change Notification • Qualificat ion Pedigree (1) • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human -Body Model (HBM) • Meets or Exceeds the Requirements of TIA/EIA-232-F and I TU v.28 Standards • Operates With 3-V to 5.5-V VCC Supply • Operates up to 250 kbit/s • One Driver and One Rece iver • Low Standby Current . . . 1 µ A Typical • External Capacitors . . . 4 × 0.1 µF • Accepts 5-V Logic Inp ut With 3.3-V Supply • Alternative Hi gh-Speed Pin-Compatible Device (1 Mbit/ s) – SNx5C3221 (1) Component qualific ation in accordance with JEDEC and indu stry standards to ensure reliable operation over an extended temperature range. This includes, but is not .
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