MAX3385EEAP Maxim Integrated Products, MAX3385EEAP Datasheet

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MAX3385EEAP

Manufacturer Part Number
MAX3385EEAP
Description
Dual Transmitter/Receiver RS-232 20-Pin SSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX3385EEAP.pdf (12 pages)

Specifications of MAX3385EEAP

Package
20SSOP
Data Transmission Topology
Point-to-Point
Interface Standards
EIA/TIA-232|RS-232|V.24|V.28
Data Rate
0.25(Min) Mbps
Function
Line Transmitter/Receiver
Number Of Transceivers
1
Number Of Transmitters
2
Transmitter Signal Type
Single-Ended
Transmitter Communication Type
RS-232
Typical Single Supply Voltage
3.3|5 V

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MAX3385EEAP+
Manufacturer:
TI
Quantity:
31 550
The MAX3385E 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 MAX3385E has two receivers and two drivers. It
features a 1µA shutdown mode that reduces power con-
sumption and extends battery life in portable systems.
Its receivers can remain active in shutdown mode,
allowing external devices such as modems to be moni-
tored using only 1µA supply current.
The MAX3385E is available in a space-saving SSOP
package in either the commercial (0°C to +70°C) or
extended-industrial (-40°C to +85°C) temperature range.
________________________Applications
19-1437; Rev 1; 10/99
________________General Description
†
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Pin Configurations continued at end of data sheet.
±15kV ESD-Protected, 3.0V to 5.5V, Low-Power,
Cg.
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
8
4
5
6
7
9
MAX3385E
Pin Configurations
SSOP
Battery-Powered
Equipment
20
19
18
17
16
15
14
13
12
11
SHDN
V
GND
T1OUT
R1IN
R1OUT
T1IN
R2OUT
N.C.
T2IN
CC
o ESD Protection for RS-232 I/O Pins
o Latchup Free
o 300µA Supply Current
o 1µA Low-Power Shutdown with Receivers Active
o 250kbps Guaranteed Data Rate
o 250µs Time to Exit Shutdown with 3kΩ Load on V+
o 6V/µs Guaranteed Slew Rate
o Meets EIA/TIA-232 Specifications Down to 3.0V
____________________________Features
MAX3385ECAP
MAX3385ECWN
MAX3385EEAP
*
C3 CAN BE RETURNED TO EITHER V
NOTE: SEE TABLE 2 FOR CAPACITOR SELECTION
TTL/CMOS
TTL/CMOS
OUTPUTS
PART
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
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.
MAX3385E
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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MAX3385EEAP Summary of contents

Page 1

... Supply Current o 1µA Low-Power Shutdown with Receivers Active o 250kbps Guaranteed Data Rate o 250µs Time to Exit Shutdown with 3kΩ Load 6V/µs Guaranteed Slew Rate o Meets EIA/TIA-232 Specifications Down to 3.0V PART MAX3385ECAP MAX3385ECWN MAX3385EEAP +3.3V C BYPASS C1 0.1µF C2 0.1µF 20 ...

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 MAX3385ECAP ....................................................0°C to +70°C MAX3385ECWN ...................................................0°C to +70°C MAX3385EEAP .................................................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C + 0.3V +25° ...

Page 3

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

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

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver V CC 0.1µ C1+ C1 C1- MAX3385E C2 OUT R_ OUT SHDN GND MINIMUM SLEW-RATE TEST ...

Page 6

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver 5V/div 0 2V/div 3.3V CC C1–C4 = 0.1µF 40µs/div Figure 2. Transmitter Outputs Exiting Shutdown or Powering Up down is typically 100µs, as shown in ...

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

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver els (one transmitter input is high, the other is low). Each transmitter is loaded with 3kΩ in parallel with 2500pF. The transmitter outputs display no ringing or undesir- ...

Page 9

ESD-Protected, 3.0V to 5.5V, Low-Power 250kbps, True RS-232 Transceiver Table 3. Logic-Family Compatibility with Various Supply Voltages SYSTEM V SUPPLY CC POWER-SUPPLY VOLTAGE VOLTAGE (V) (V) 3.3 3 3.3 _______________________________________________________________________________________ Pin Configurations (continued) TOP ...

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 ______________________________________________________________________________________ Package Information (continued) 11 ...

Page 12

... 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products ...

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