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MAX3318EEAP+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
________________General Description
The MAX3316E–MAX3319E are 2.5V powered RS-232
compatible transceivers. These devices feature shut-
down (MAX3317E), AutoShutdown Plus™ (MAX3318E/
MAX3319E), and enhanced electrostatic discharge
(ESD) protection integrated into the chip. All transmitter
outputs and receiver inputs are protected to ±15kV
using the IEC 1000-4-2 Air-Gap Discharge method,
±8kV using the IEC 1000-4-2 Contact Discharge
method, and ±15kV using the Human Body Model.
All devices are guaranteed at a data rate of 460kbps.
The transceivers have a proprietary low-dropout trans-
mitter output stage enabling RS-232 compatible opera-
tion from a +2.25V to +3.0V supply with a dual charge
pump. The charge pump requires only four 0.1µF
capacitors. The MAX3318E/MAX3319E feature a logic-
level output (READY) that asserts when the charge
pump is regulating and the device is ready to begin
transmitting.
The MAX3318E/MAX3319E achieve a 1µA supply current
using Maxim’s revolutionary AutoShutdown Plus feature.
These devices automatically enter a low-power shut-
down mode when the RS-232 cable is disconnected or
the transmitters of the connected peripherals are inactive
for more than 30 seconds. They turn on again when
they sense a valid transition at any transmitter or receiver
input. AutoShutdown Plus saves power without
changes to the existing BIOS or operating system. The
MAX3317E also features a 1µA shutdown mode that
can be entered by driving SHDN low. The MAX3317E’s
receivers remain active while in shutdown mode, allowing
external devices such as modems to be monitored
using only 1µA supply current.
These devices are available in space-saving packages:
MAX3316E (16-pin SSOP and 20-pin TSSOP), MAX3317E/
MAX3318E (20-pin SSOP and 20-pin TSSOP), and
MAX3319E (16-pin SSOP).
________________________Applications
Palmtop Computers
Hand-Held Instruments
Pagers
Cellular Phones
GPS
Handy Terminals
Hand-Held Electronic Books
____________________________Features
♦ ESD Protection for RS-232 I/O Pins
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
♦ 300µA Operating Supply Current
♦ 1µA Low-Power Shutdown with Receivers Active
♦ Guaranteed 460kbps Data Rate
♦ Guaranteed 4V/µs Slew Rate
♦ RS-232 Compatible Down to 2.25V
MAX3316E–MAX3319E
±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers
________________________________________________________________ Maxim Integrated Products 1
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
FORCEOFF
V
CC
GND
T1OUTC1-
V+
C1+
READY
R1IN
R1OUT
FORCEON
T1INT2OUT
V-
C2-
C2+
12
11
9
10
T2IN
INVALIDR2OUT
R2IN
MAX3318E
SSOP/TSSOP
Pin Configurations
19-1616; Rev 1; 6/00
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Ordering Information
Selector Guide and Typical Application Circuits appear at
end of data sheet.
AutoShutdown Plus is a trademark of Maxim Integrated Products.
PART
MAX3316ECUP
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
20 TSSOP
MAX3316ECAE 0°C to +70°C 16 SSOP
MAX3316EEUP -40°C to +85°C 20 TSSOP
MAX3316EEAE -40°C to +85°C 16 SSOP
MAX3317ECUP
0°C to +70°C 20 TSSOP
MAX3317ECAP 0°C to +70°C 20 SSOP
MAX3317EEUP -40°C to +85°C 20 TSSOP
MAX3317EEAP -40°C to +85°C 20 SSOP
MAX3318ECUP
0°C to +70°C 20 TSSOP
MAX3318ECAP 0°C to +70°C 20 SSOP
MAX3318EEUP -40°C to +85°C 20 TSSOP
MAX3318EEAP -40°C to +85°C 20 SSOP
MAX3319ECAE
0°C to +70°C 16 SSOP
MAX3319EEAE -40°C to +85°C 16 SSOP
Pin Configurations continued at end of data sheet.
±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.25V to +3.0V, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +2.5V,
T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND..............................................................-0.3V to +6V
V+ to GND (Note 1) ..................................................-0.3V to +7V
V- to GND (Note 1) ...................................................-7V to +0.3V
V+ + |V-| (Note 1) .................................................................+13V
Input Voltages
T_IN, EN, SHDN, FORCEON,
FORCEOFF to GND ...............................................-0.3V to +6V
R_IN to GND ..................................................................±25V
Output Voltages
T_OUT to GND............................................................±13.2V
R_OUT, INVALID, READY to GND .......-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration, T_OUT to GND.......................Continuous
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SSOP (derate 7.14mW/°C above +70°C) .......571mW
20-Pin SSOP (derate 8.00mW/°C above +70°C) .......640mW
20-Pin TSSOP (derate 7.00mW/°C above +70°C) .....559mW
Operating Temperature Range
MAX331_EC_ _ .................................................0°C to +70°C
MAX331_EE_ _ ..............................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
SHDN = GND (MAX3317E); FORCEOFF =
GND (MAX3318E/MAX3319E)
All transmitter outputs loaded with 3kΩ to
ground
FORCEON = GND, FORCEOFF = V
CC
,
all R_IN idle, all T_IN idle
(MAX3318E/MAX3319E)
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
EN = V
CC
(MAX3317E), receivers disabled
T_IN, EN, SHDN, FORCEON, FORCEOFF
SHDN = V
CC
, no load (MAX3317E);
FORCEON = FORCEOFF = V
CC
, no load
(MAX3318E/MAX3319E)
T_IN, EN, SHDN, FORCEON, FORCEOFF
I
OUT
= -0.5mA
T_IN, EN, SHDN, FORCEON, FORCEOFF
I
OUT
= 0.5mA
CONDITIONS
V
±3.7 ±4
Output Voltage Swing
kΩ
357
Input Resistance
V0.3Input Hysteresis
V
0.7 · V
CC
Input Threshold High
V
0.3 · V
CC
Input Threshold Low
V
-25 +25
Input Voltage Range
V
0.9 · V
CC
Output Voltage High
V
0.1 · V
CC
Output Voltage Low
µA
110
Shutdown Supply Current
µA
110
AutoShutdown Plus Supply
Current
µA
±0.05 ±10
Output Leakage Current
µA
±0.01 ±1
Input Leakage Current
V
0.3
Transmitter Input Hysteresis
mA
0.3 1
Supply Current
V
0.3 · V
CC
Input Logic Threshold Low
V
0.7 · V
CC
Input Logic Threshold High
UNITSMIN TYP MAXSYMBOL
LOGIC INPUTS
RECEIVER OUTPUTS
RECEIVER INPUTS
MAX3316E–MAX3319E
PARAMETER
DC CHARACTERISTICS (V
CC
= +2.5V, T
A
= +25°C)
TRANSMITTER OUTPUTS
MAX3316E–MAX3319E
±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.25V to +3.0V, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +2.5V,
T
A
= +25°C.)
TIMING CHARACTERISTICS
(V
CC
= +2.25V to +3.0V, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +2.5V,
T
A
= +25°C.)
V
CC
= 0 or 2.25V to 3.0V, V
OUT
= ±12V,
transmitters disabled
V
CC
= 0, transmitter output = ±2V
CONDITIONS
µA
±25
Output Leakage Current
mA
±25 ±60
Output Short-Circuit Current
Ω
300 10M
Output Resistance
UNITSMIN TYP MAXSYMBOLPARAMETER
V
CC
= 2.5V, Figure 4b
I
OUT
= -0.5mA
I
OUT
= 0.5mA
Figure 4a
Figure 4a
µs
1
t
INVH
Receiver Positive or Negative
Threshold to INVALID High
V
0.9 · V
CC
INVALID, READY Output
Voltage High
V
0.1 · V
CC
INVALID, READY Output
Voltage Low
V
-0.3 0.3
Receiver Input Threshold to
INVALID Output Low
-2.7
V
2.7
Receiver Input Threshold to
INVALID Output High
Positive threshold
V
CC
= 2.5V, Figure 4b (Note 2)
V
CC
= 2.5V, Figure 4b (Note 2)
V
CC
= 2.5V, Figure 4b
Negative threshold
s
15 30 60
t
AUTO-
SHDN
Receiver or Transmitter Edge to
Transmitters Shutdown
µs
100
t
WU
Receiver or Transmitter Edge to
Transmitters Enabled
µs
30
t
INVL
Receiver Positive or Negative
Threshold to INVALID Low
R_IN to R_OUT, C
L
= 150pF
R
L
= 3kΩ, C
L
= 1000pF, one transmitter
switching
Normal operation (MAX3317E)
Normal operation (MAX3317E)
(Note 3)
CONDITIONS
0.175
t
PLH
µs
0.175
t
PHL
kbps
460
Maximum Data Rate
Receiver Propagation Delay
ns
250
Receiver Output Enable Time
ns
250
Receiver Output Disable Time
ns
100
|t
PHL
- t
PLH
|
Transmitter Skew
ns
50
|t
PHL
- t
PLH
|
Receiver Skew
UNITSMIN TYP MAXSYMBOLPARAMETER
AutoShutdown Plus (FORCEON = GND, FORCEOFF = V
CC
) (MAX3318E/MAX3319E)
ESD PROTECTION
R_IN, T_OUT
±15
kV
±15
±8
Human Body Model
IEC 1000-4-2 Air-Gap Discharge method
IEC 1000-4-2 Contact Discharge method
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MAX3318EEAP+

Mfr. #:
Buy MAX3318EEAP+
Manufacturer:
Maxim Integrated
Description:
RS-232 Interface IC 460kbps 1uA 2.5V Transceiver
Lifecycle:
New from this manufacturer.
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