MAX3384 MAXIM [Maxim Integrated Products], MAX3384 Datasheet

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MAX3384

Manufacturer Part Number
MAX3384
Description
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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The MAX3384E is a 3V-powered EIA/TIA-232 and
V.28/V.24 communications interface with low power
requirements, high data-rate capabilities, and en-
hanced electrostatic discharge (ESD) protection. All
transmitter outputs and receiver inputs are protected to
±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV
using IEC 1000-4-2 Contact Discharge, and ±15kV
using the Human Body Model.
The transceiver has a proprietary low-dropout transmit-
ter output stage, delivering 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 capac-
itors for operation from a +3.3V supply. Each device is
guaranteed to run at data rates of 250kbps while main-
taining RS-232 output levels.
The MAX3384E has two receivers and two drivers. It
features a 1µA shutdown mode that reduces power con-
sumption and extends battery life in portable systems.
The MAX3384E is available in a space-saving SSOP
package in either the commercial (0°C to +70°C) or
extended temperature (-40°C to +85°C) range.
________________________Applications
________________General Description
19-1949; Rev 0; 1/01
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations continued at end of data sheet.
±15kV ESD-Protected, 3.0V to 5.5V, Low-Power,
Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.
Hand-Held Equipment
Peripherals
Printers
TOP VIEW
T2OUT
R2IN
N.C.
N.C.
C1+
C2+
C1-
C2-
V+
V-
________________________________________________________________ Maxim Integrated Products
up to 250kbps, True RS-232 Transceiver
10
1
2
3
4
5
6
7
8
9
MAX3384E
Pin Configurations
SSOP
Battery-Powered
Equipment
PDAs
17
14
13
20
19
18
16
15
12
11
SHDN
V
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
N.C.
CC
____________________________Features
o ESD Protection for RS-232 I/O Pins
o Latchup Free
o 300µA Supply Current
o 1µA Low-Power Shutdown
o 250kbps Guaranteed Data Rate
o 250µs Time to Exit Shutdown with 3kΩ Load on V+
o 6V/µs Guaranteed Slew Rate
o Transmitter and Receiver Outputs High
o Meets EIA/TIA-232 Specifications Down to 3.0V
MAX3384ECAP
MAX3384ECWN
MAX3384EEAP
Impedance in Shutdown
*
C3 CAN BE RETURNED TO EITHER V
NOTE: SEE TABLE 2 FOR CAPACITOR SELECTION
TTL/CMOS
TTL/CMOS
OUTPUTS
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
PART
C
INPUTS
BYPASS
0.1µF
0.1µF
C2
C1
+3.3V
Typical Operating Circuit
T1IN
T2IN
C1+
C1-
C2-
C2+
R1OUT
R2OUT
-40°C to +85°C
TEMP. RANGE
Ordering Information
0°C to +70°C
0°C to +70°C
CC
OR GROUND.
MAX3384E
GND
V
CC
T1OUT
T2OUT
SHDN
5k
R1IN
R2IN
5k
V+
V-
PIN-PACKAGE
20 SSOP
18 SO
20 SSOP
C3
0.1µF
C4
0.1µF
RS-232
OUTPUTS
RS-232
INPUTS
*
1

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MAX3384 Summary of contents

Page 1

... Each device is guaranteed to run at data rates of 250kbps while main- taining RS-232 output levels. The MAX3384E has two receivers and two drivers. It features a 1µA shutdown mode that reduces power con- sumption and extends battery life in portable systems. ...

Page 2

... SSOP (derate 8.00mW/°C above +70°C) ..........640mW 18-Pin SO (derate 9.52mW/°C above +70°C)...............762mW Operating Temperature Ranges MAX3384ECAP ....................................................0°C to +70°C MAX3384ECWN ...................................................0°C to +70°C MAX3384EEAP .................................................-40°C to +85°C Junction Temperature ........................................................150°C Storage Temperature Range .............................-65°C to +150°C + 0.3V) Lead Temperature (soldering, 10s) .................................+300° +25° ...

Page 3

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver ELECTRICAL CHARACTERISTICS (continued +3V to +5.5V, for tests at 3.3V ±10%, C1–C4 = 0.1µF; for tests at +5V ±10 0.047µF, C2–C4 = 0.33µF; CC ...

Page 4

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver __________________________________________Typical Operating Characteristics (V = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and C CC TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE ...

Page 5

... The MAX3384E’s transmitters are disabled and the out- puts are forced into a high-impedance state when the device is in shutdown (SHDN = GND). The MAX3384E permits the outputs to be driven up to ±12V in shut- down. The transmitter inputs do not have pullup resistors. ...

Page 6

... The IEC 1000-4-2 standard covers ESD testing and per- formance of finished equipment; it does not specifically refer to integrated circuits. The MAX3384E helps you T1OUT design equipment that meets Level 4 (the highest level) of IEC 1000-4-2, without the need for additional ESD-pro- tection components ...

Page 7

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver 1500Ω DISCHARGE CHARGE-CURRENT RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 3a. Human Body ESD Test Model R ...

Page 8

... T1IN V+ C3 T1OUT V- C4 R1OUT Figure 7. MAX3384E Loopback Test Result at 120kbps 1000pF T1IN T1OUT R1OUT V CC C1–C4 = 0.1µF Figure 8. MAX3384E Loopback Test Result at 250kbps High Data Rates 5V/div 5V/div 5V/div V = 3.3V CC C1–C4 = 0.1µF 2µs/div 5V/div 5V/div 5V/div = 3.3V 2µs/div ...

Page 9

... VOLTAGE (V) (V) 3.3 3 3.3 Interconnection with 3V and 5V Logic The MAX3384E can directly interface with various 5V logic families, including ACT and HCT CMOS. See Table 3 for more information on possible combinations of interconnections. _______________________________________________________________________________________ Pin Configurations (continued) TOP VIEW COMPATIBILITY Compatible with all CMOS families ...

Page 10

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver ________________________________________________________Package Information 10 ______________________________________________________________________________________ ...

Page 11

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver 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 ...

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