MAX3238E LINE DRIVER/RECEIVER Datasheet

MAX3238E Datasheet, PDF, Equivalent


Part Number

MAX3238E

Description

3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER

Manufacture

etcTI

Total Page 24 Pages
Datasheet
Download MAX3238E Datasheet


MAX3238E
www.ti.com
MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006
FEATURES
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 400 kbit/s
Five Drivers and Three Receivers
Auto-Powerdown Plus Feature Enables
Flexible Power-Down Mode
Low Standby Current . . . 1 µA Typical
External Capacitors . . . 4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Always-Active Noninverting Receiver Output
(ROUT1B)
Alternative High-Speed Pin-Compatible
Device (1 Mbit/s) for SNx5C3238
ESD Protection for RS-232 Interface Pins
±15 kV – Human-Body Model (HBM)
±8 kV – IEC61000-4-2, Contact Discharge
±15 kV – IEC61000-4-2, Air-Gap Discharge
DB, DW, OR PW PACKAGE
(TOP VIEW)
C2 +
GND
C2−
V−
DOUT1
DOUT2
DOUT3
RIN1
RIN2
DOUT4
RIN3
DOUT5
FORCEON
FORCEOFF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 C1+
27 V+
26 VCC
25 C1−
24 DIN1
23 DIN2
22 DIN3
21 ROUT1
20 ROUT2
19 DIN4
18 ROUT3
17 DIN5
16 ROUT1B
15 INVALID
RHB PACKAGE
(TOP VIEW)
APPLICATIONS
Battery-Powered Systems
PDAs
Notebooks
Subnotebooks
Laptops
Palmtop PCs
Hand-Held Equipment
Modems
Printers
DOUT1
DOUT2
DOUT3
RIN1
RIN2
DOUT4
RIN3
NC
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
C1–
DIN1
DIN2
DIN3
ROUT1
ROUT2
DIN4
ROUT3
DESCRIPTION/ORDERING INFORMATION
The MAX3238E consists of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV
ESD (HBM) protection on the driver output (DOUT) and receiver input (RIN) terminals. The device meets the
requirements of TIA/EIA-232-F and provides the electrical interface between notebook and subnotebook
computer applications. The charge pump and four small external capacitors allow operation from a single 3-V to
5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT1B), which allows
applications using the ring indicator to transmit data while the device is powered down. This device operates at
data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
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

MAX3238E
MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
Flexible control options for power management are featured when the serial port and driver inputs are inactive.
The auto-powerdown plus feature functions when FORCEON is low and FORCEOFF is high. During this mode
of operation, if the device does not sense valid signal transitions on all receiver and driver inputs for
approximately 30 s, the built-in charge pump and drivers are powered down, reducing the supply current to
1 µA. By disconnecting the serial port or placing the peripheral drivers off, auto-powerdown plus occurs if there
is no activity in the logic levels for the driver inputs. Auto-powerdown plus can be disabled when FORCEON and
FORCEOFF are high. With auto-powerdown plus enabled, the device activates automatically when a valid signal
is applied to any receiver or driver input. INVALID is high (valid data) if any 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 all receiver input voltages are between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 5 for
receiver input levels.
TA
0°C to 70°C
–40°C to 85°C
ORDERING INFORMATION
PACKAGE (1)
ORDERABLE PART NUMBER
SSOP – DB
Tube of 50
Reel of 2000
MAX3238ECDB
MAX3238ECDBR
TSSOP – PW
Tube of 50
Reel of 2000
MAX3238ECPW
MAX3238ECPWR
SOIC – DW
Reel of 2000
MAX3238ECDWR
QFN – RHB
Reel of 2000
MAX3238ECRHBR
SSOP – DB
Tube of 50
Reel of 2000
MAX3238EIDB
MAX3238EIDBR
TSSOP – PW
Tube of 50
Reel of 2000
MAX3238EIPW
MAX3238EIPWR
SOIC – DW
Reel of 2000
MAX3238ICDWR
QFN – RHB
Reel of 2000
MAX3238EIRHBR
TOP-SIDE MARKING
MAX3238EC
MP238EC
MAX3238EC
Preview
MAX3238EI
MP238EI
MAX3238EI
Preview
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
2 Submit Documentation Feedback


Features www.ti.com MAX3238E 3-V TO 5.5-V MULTIC HANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD (HBM) PROTECTION SLLS710A – FEBRUARY 2006 – REVISED APRIL 200 6 FEATURES • RS-232 Bus-Pin ESD Prot ection Exceeds ±15 kV Using Human-Body Model (HBM) • Meets or Exceeds the R equirements of TIA/EIA-232-F and ITU v. 28 Standards • Operates With 3-V to 5 .5-V VCC Supply • Operates up to 400 kbit/s • Five Drivers and Three Recei vers • Auto-Powerdown Plus Feature En ables Flexible Power-Down Mode • Low Standby Current . . . 1 µA Typical • External Capacitors . . . 4 × 0.1 µF • Accepts 5-V Logic Input With 3.3-V Supply • Always-Active Noninverting Receiver Output (ROUT1B) • Alternativ e High-Speed Pin-Compatible Device (1 M bit/s) for SNx5C3238 • ESD Protection for RS-232 Interface Pins – ±15 kV – Human-Body Model (HBM) – ±8 kV IEC61000-4-2, Contact Discharge – ±15 kV – IEC61000-4-2, Air-Gap Disch arge DB, DW, OR PW PACKAGE (TOP VIEW) C2 + GND C2− V− DOUT1 DOUT2 DOUT3 RIN1 RIN2 DOUT4 RIN3 DOUT5 FORCEON FO.
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