MAX3224CUP+ Maxim Integrated Products, MAX3224CUP+ Datasheet

IC TXRX RS-232 W/SHTDWN 20-TSSOP

MAX3224CUP+

Manufacturer Part Number
MAX3224CUP+
Description
IC TXRX RS-232 W/SHTDWN 20-TSSOP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3224CUP+

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Propagation Delay Time Ns
0.15 us
Operating Supply Voltage
3 V to 5 V
Supply Current
0.3 mA
Operating Temperature Range
0 C to + 70 C
Data Rate
250 Kbps
Mounting Style
SMD/SMT
Number Of I/os
2 / 2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3224–MAX3227/MAX3244/MAX3245 are 3V-
powered EIA/TIA-232 and V.28/V.24 communications
interfaces with automatic shutdown/wakeup features
and high data-rate capabilities.
All devices achieve a 1µA supply current using Maxim’s
revolutionary AutoShutdown Plus™ feature. These
devices automatically enter a low-power shutdown
mode when the RS-232 cable is disconnected or the
transmitters of the connected peripherals are inactive,
and the UART driving the transmitter inputs is inactive
for more than 30 seconds. They turn on again when
they sense a valid transition at any transmitter or receiv-
er input. AutoShutdown Plus saves power without
changes to the existing BIOS or operating system.
The MAX3225/MAX3227/MAX3245 also feature
MegaBaud™ operation, guaranteeing 1Mbps for high-
speed applications such as communicating with ISDN
modems. The MAX3224/MAX3226/MAX3244 guarantee
250kbps operation. The transceivers have a proprietary
low-dropout transmitter output stage enabling true RS-
232 performance from a +3.0V to +5.5V supply with a
dual charge pump. The charge pump requires only four
small 0.1µF capacitors for operation from a 3.3V supply.
The MAX3224–MAX3227 feature a logic-level output
(READY) that asserts when the charge pump is regulat-
ing and the device is ready to begin transmitting.
All devices are available in a space-saving TQFN,
TSSOP, and SSOP packages.
AutoShutdown Plus, MegaBaud, and UCSP are trademarks
of Maxim Integrated Products, Inc.
________________________Applications
19-1289; Rev 5; 2/11
________________General Description
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
RS-232 Transceivers with AutoShutdown Plus
Notebook, Subnotebook, and Palmtop Computers
Cellular Phones
Battery-Powered Equipment
Handheld Equipment
Peripherals
Printers
1µA Supply Current, 1Mbps, 3.0V to 5.5V,
________________________________________________________________ Maxim Integrated Products
♦ ♦ For Smaller Packaging:
♦ ♦ For Low-Voltage or Data Cable Applications:
♦ ♦ For Integrated ESD Protection:
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Ordering Information continued at end of data sheet.
_______________Ordering Information
_____________________ Selector Guide
_Next Generation Device Features
MAX3224CPP+
MAX3224CAP+
MAX3224CTP+
MAX3224CUP+
MAX3224EPP+
MAX3224EAP+
MAX3224ETP+
MAX3224EUP+
MAX3224
MAX3225
MAX3226
MAX3227
MAX3244
MAX3245
MAX3228/MAX3229: +2.5V to +5.5V RS-232
Transceivers in UCSP™
MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA,
2 Tx/2 Rx RS-232 Transceivers with ±15kV ESD-
Protected I/O and Logic Pins
MAX3222E/MAX3232E/MAX3237E/MAX3241E/
MAX3246E: ±15kV ESD-Protected, Down to 10nA,
+3.0V to +5.5V, Up to 1Mbps, True RS-232
Transceivers (MAX3246E Available in UCSP)
PART
PART
RECEIVERS
DRIVERS/
NO. OF
2/2
2/2
1/1
1/1
3/5
3/5
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
GUARANTEED
DATA RATE
(bps)
250k
250k
250k
1M
1M
1M
OUTPUT
READY
PIN-PACKAGE
20 PDIP
20 SSOP
20 TQFN-EP*
20 TSSOP
20 PDIP
20 SSOP
20 TQFN-EP*
20 TSSOP
Shutdown
Auto-
Plus
1

Related parts for MAX3224CUP+

MAX3224CUP+ Summary of contents

Page 1

... Transceivers (MAX3246E Available in UCSP) _______________Ordering Information PART TEMP RANGE MAX3224CPP+ 0°C to +70°C MAX3224CAP+ 0°C to +70°C MAX3224CTP+ 0°C to +70°C MAX3224CUP+ 0°C to +70°C MAX3224EPP+ -40°C to +85°C MAX3224EAP+ -40°C to +85°C MAX3224ETP+ -40°C to +85°C MAX3224EUP+ -40°C to +85°C + Denotes a lead(Pb)-free/RoHS-compliant package ...

Page 2

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0. GND (Note 1) ..................................................-0. GND (Note 1) ...................................................+0. ...

Page 3

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus ELECTRICAL CHARACTERISTICS (continued +3V to +5.5V, C1–C4 = 0.1µF, tested at 3.3V ±10 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10 unless ...

Page 4

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus TIMING CHARACTERISTICS—MAX3224/MAX3226/MAX3244 (V = +3V to +5.5V, C1–C4 = 0.1µF, tested at 3.3V ±10 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10 unless otherwise ...

Page 5

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus __________________________________________Typical Operating Characteristics (V = +3.3V, 250kbps data rate, C1–C4 = 0.1µF, all transmitters loaded with 3kΩ and C CC MAX3224/MAX3226 TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE 6 ...

Page 6

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus (V = +3.3V, 250kbps data rate, C1–C4 = 0.1µF, all transmitters loaded with 3kΩ and C CC MAX3244 TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE OUT+ ...

Page 7

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus PIN MAX3224 MAX3225 MAX3226 MAX3244 PDIP/ MAX3227 MAX3245 TQFN- SSIP/ EP TSSOP — ...

Page 8

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus POWER- FORCEOFF MANAGEMENT FORCEON UNIT OR KEYBOARD INVALID CONTROLLER MAX3244 MAX3245 I/O CPU CHIP WITH UART Figure 1. Interface Under Control of PMU RS-232 Transmitters The transmitters are ...

Page 9

... Ring Indicator applications to be monitored without forward biasing other devices connected to the receiver outputs. This is ideal for sys- tems where V is set to ground in shutdown to CC accommodate peripherals such as UARTs (Figure 2). AutoShutdown is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ RECEIVER OR VALID TRANSMITTER RECEIVER T_OUT ...

Page 10

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus +0.3V R_IN -0.3V INVALID ASSERTED IF ALL RECEIVER INPUTS ARE BETWEEN +0.3V AND -0.3V FOR AT LEAST 30μs. Figure 3a. INVALID Functional Diagram, INVALID Low +2.7V R_IN -2.7V ...

Page 11

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus RECEIVER INPUTS TRANSMITTER INPUTS TRANSMITTER OUTPUTS V INVALID CC t INVL OUTPUT t INVH OUTPUT *MAX3224–MAX3227 Figure 4b. AutoShutdown ...

Page 12

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus Software-Controlled Shutdown If direct software control is desired, use INVALID to indicate DTR or Ring Indicator signal. Tie FORCEOFF and FORCEON together to bypass the AutoShutdown Plus so ...

Page 13

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus The MAX3224/MAX3226/MAX3244 maintain the RS-232 ±5.0V minimum transmitter output voltage even at high data rates. Figure 7 shows a transmitter loopback test circuit. Figure 8 shows a loopback ...

Page 14

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus +3.3V 0.1μF 28 C1+ C1 0.1μF 24 C1- MAX3244 1 C2+ MAX3245 C2 0.1μF 2 C2- T1IN 14 T2IN LOGIC 13 INPUTS T3IN 12 R2OUTB 20 R1OUT 19 ...

Page 15

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus drove all serial mice tested and met their respective current and voltage requirements. The MAX3244/ MAX3245 dual charge pump ensures the transmitters will supply at least ±5V during ...

Page 16

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus ___________________________________________________Typical Operating Circuits +3.3V 15 0.1μF C BYPASS C1 0.1μF C1- MAX3226 5 C2+ MAX3227 C2 6 0.1μF C2- 11 T1IN 9 R1OUT ...

Page 17

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus ___________________________________________________________ Pin Configurations TOP VIEW + READY 1 C1 C1- 4 MAX3224 C2+ 5 MAX3225 C2 T2OUT 8 R2IN 9 R2OUT 10 ...

Page 18

Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus Ordering Information (continued) PART TEMP RANGE MAX3225CPP+ 0°C to +70°C MAX3225CAP+ 0°C to +70°C MAX3225CTP+ 0°C to +70°C MAX3225CUP+ 0°C to +70°C MAX3225EPP+ -40°C to +85°C MAX3225EAP+ -40°C ...

Page 19

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2011 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

Related keywords