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PDF MAX3316E Data sheet ( Hoja de datos )
| Número de pieza | MAX3316E | |
| Descripción | 15kV ESD-Protected / 2.5V / 1A / 460kbps / RS-232 Compatible Transceivers | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1616; Rev 0; 1/00
±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers
_______________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
o 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
o 300µA Operating Supply Current
o 1µA Low-Power Shutdown with Receivers Active
o Guaranteed 460kbps Data Rate
o Guaranteed 4V/µs Slew Rate
o RS-232 Compatible Down to 2.25V
Ordering Information
PART
MAX3316ECUP
MAX3316ECAE
MAX3316EEUP
MAX3316EEAE
MAX3317ECUP
MAX3317ECAP
MAX3317EEUP
MAX3317EEAP
MAX3318ECUP
MAX3318ECAP
MAX3318EEUP
MAX3318EEAP
MAX3319ECAE
MAX3319EEAE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
20 TSSOP
16 SSOP
20 TSSOP
16 SSOP
20 TSSOP
20 SSOP
20 TSSOP
20 SSOP
20 TSSOP
20 SSOP
20 TSSOP
20 SSOP
16 SSOP
16 SSOP
Pin Configurations
READY 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- 7
T2OUT 8
R2IN 9
R2OUT 10
MAX3318E
20 FORCEOFF
19 VCC
18 GND
17 T1OUT
16 R1IN
15 R1OUT
14 FORCEON
13 T1IN
12 T2IN
11 INVALID
Selector Guide and Typical Application Circuits appear at
end of data sheet.
AutoShutdown Plus is a trademark of Maxim Integrated Products.
SSOP/TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers
Typical Operating Characteristics (continued)
(VCC = +2.5V, C1–C4 = 0.1µF, 460kbps data rate, all transmitters loaded with 3kΩ, TA = +25°C, unless otherwise noted.)
MAX3316E/MAX3317E
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
35
T1 TRANSMITTING AT SPECIFIED DATA RATE
30 T2 TRANSMITTING AT 20kbps
25
460kbps
20
230kbps
15
10 20kbps
5
0
0 1000 2000 3000
LOAD CAPACITANCE (pF)
MAX3318E/MAX3319E
SUPPLY CURRENT vs. SUPPLY VOLTAGE
15
460kbps
12
230kbps
9
20kbps
6
T1 TRANSMITTING AT SPECIFIED
3 DATA RATE
T2 TRANSMITTING AT 20kbps
CL = 1000pF
0
2.25 2.45 2.65 2.85 3.05 3.25 3.45 3.65
VCC (V)
MAX3318E/MAX3319E
TRANSMITTER OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
6
T_OUT+
4
2
T1 TRANSMITTING AT 460kbps
0
T2 TRANSMITTING AT 20kbps
CL = 1000pF
-2
-4 T_OUT-
-6
2.25 2.45 2.65 2.85 3.05 3.25 3.45 3.65
VCC (V)
MAX3318E/MAX3319E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
5
4
T_OUT+
3
2
1
T1 TRANSMITTING AT 460kbps
T2 TRANSMITTING AT 20kbps
0
-1
-2
-3
T_OUT-
-4
-5
0 1000 2000 3000
LOAD CAPACITANCE (pF)
MAX3318E/MAX3319E
SLEW RATE vs. LOAD CAPACITANCE
10
8 -SLEW
6
+SLEW
4
2
FOR DATA RATES UP TO 460kbs
0
0 1000 2000
LOAD CAPACITANCE (pF)
3000
MAX3318E/MAX3319E
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
35
T1 TRANSMITTING AT SPECIFIED
30
DATA RATE
T2 TRANSMITTING AT 20kbps
25
460kbps
20
230kbps
15
10 20kbps
5
0
0 1000 2000 3000
LOAD CAPACITANCE (pF)
_______________________________________________________________________________________ 5
5 Page 
±15kV ESD-Protected, 2.5V, 1µA, 460kbps,
RS-232 Compatible Transceivers
RECEIVER
INPUTS
TRANSMITTER
INPUTS
TRANSMITTER
OUTPUTS
INVALID
OUTPUT
VCC
tINVL
0
*VCC
OUTPUT 0
tINVH
tAUTOSHDN
tWU
V+
VCC
0
V-
MAX3318E/MAX3319E
Figure 4b. AutoShutdown Plus, INVALID, and READY Timing Diagram
tAUTOSHDN
} INVALID
REGION
tWU
POWER-
MANAGEMENT
UNIT
MASTER SHDN LINE
0.1µF
1M
FORCEOFF FORCEON
MAX3318E
MAX3319E
RC
1M
CHARGE-CURRENT
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
SOURCE
Cs
100pF
RD
1500Ω
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
Figure 5. AutoShutdown Plus Initial Turn-On to Wake Up a
Mouse or Another System
Figure 6a. Human Body ESD Test Model
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX3316E.PDF ] | |
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