LTC2801/LTC2802/
LTC2803/LTC2804
1.8V to 5.5V RS-232
Single and Dual Transceivers
Ferutae S d e Sirc Pnoit
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1.8V to 5.5V Supply Voltage The LTC 2801/LTC2802/LTC2803/LTC2804 are single and
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Single and Dual Transceivers dual RS-232 transceivers in narrow SSOP and chip-scale
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High-Speed Operation DFN packages. All operate over a supply range of 1.8V to
1Mbps for 250pF/3k Load (LTC2802, LTC2804) 5.5V, which permits operation directly from two alkaline,
250kbps for 1nF/3k Load NiCd or NiMH cells. An integrated DC-to-DC converter
100kbps for 2.5nF/3k TIA/EIA-232-F Load generates power supplies for driving RS-232 levels. A
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Low-Power 1A Shutdown and 15A Receivers- logic supply pin allows easy interfacing with different logic
Active Modes levels independent of the DC-DC supply.
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No Damage or Latchup to 10kV ESD on RS-232
These parts are compatible with the TIA/EIA-232-F stan-
Interface
dard. Driver outputs are protected from overload and can
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Logic Supply Pin for Easy Level-Shifting to UART or
be shorted to ground or up to 15V without damage. To
Microprocessor
extend battery life, receivers can be kept active, operating
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Low-Latency Output Enable Allows Line Sharing and
at reduced speed, with only 15A current. In shutdown
Half-Duplex Operation
mode, current is further reduced to 1A.
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True RS-232 Compliant Output Levels
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Small Footprint:
P tcudorS noitceleGediu
LTC2801/LTC2802 4mm 3mm DFN Package
LTC2803/LTC2804 Narrow SSOP-16 and
DRIVERS AND MAXIMUM
PART NUMBER RECEIVERS DATA RATE MODES* PACKAGE
5mm 3mm DFN Packages
LTC2801 1 + 1 0.25Mbps SD, RA, DD, AO DFN-12
LTC2802 1 + 1 1Mbps SD, RA, DD, AO DFN-12
Pa P noitacil S
LTC2803 2 + 2 0.25Mbps SD, RA, DD, AO DFN-16
n
Battery-Powered Systems
LTC2803-1 2 + 2 0.25Mbps SD, AO SSOP-16
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Computers and Consumer Electronics
LTC2804 2 + 2 1Mbps SD, RA, DD, AO DFN-16
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Diagnostic Ports
LTC2804-1 2 + 2 1Mbps SD, AO SSOP-16
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
*SD = Shutdown, RA = Receiver Active (low power), DD = Drivers
Technology Corporation. All other trademarks are the property of their respective owners.
Disabled, AO = All On
t y P laci Pa P noitacil
1.8V TO 5.5V
LTC2802 at 1.8V and 1Mbps
L1
10H
C4
1F
V SW
CC
2V/DIV TIN
C1
LTC2802
V
L
220nF
PS CAP
OFF ON
MODE
5V/DIV TOUT
TIN TOUT
ROUT RIN
ROUT
2V/DIV
GND V
EE
V 2801 TA01b
DD
V = V = 1.8V 400ns/DIV
CC L
WRAPPING DATA
C2 C3
TOUT LOAD = 250pF + RIN
1F 1F
ROUT LOAD = 150pF
2801 TA01a
2801234fe
LTC2801/LTC2802/
LTC2803/LTC2804
a b S etulo Mixa Mu M r nita GS (Note 1)
Input Supplies PS, ON/OFF .....................................0.3V to (V + 0.3V)
L
V ...........................................................0.3V to 7V RIN, R1IN, R2IN ..........................................25V to 25V
CC
V ......................................................... 0.3V to 6.7V TOUT, T1OUT, T2OUT.................................. 15V to 15V
L
Generated Supplies ROUT, R1OUT, R2OUT ....................0.3V to (V + 0.3V)
L
V .................................................V 0.3V to 7.5V Operating Temperature
DD CC
V ........................................................ 0.3V to 7.5V LTC280XC ................................................0C to 70C
EE
V V ..............................................................14V LTC280XI .............................................40C to 85C
DD EE
SW .................................................. 0.3V to V + 0.3V Storage Temperature Range ..................65C to 125C
DD
CAP .................................................. +0.3V to V 0.3V Lead Temperature (Soldering, 10 sec)
EE
TIN, T1IN, T2IN, MODE ................................0.3V to 7V GN Package ......................................................300C
P ni c no Fi Gnoitaru
LTC2801, LTC2802 LTC2803, LTC2804 LTC2803-1, LTC2804-1
1-Driver/1-Receiver 2-Driver/2-Receiver 2-Driver/2-Receiver
TOP VIEW
TOP VIEW
TOP VIEW
R1IN 1 16 R1OUT
R1IN 1 16 R1OUT
RIN 1 12 ROUT
R2IN 2 15 R2OUT
2
R2IN 15 R2OUT
TOUT 2 11 TIN
T1OUT 3 14 T1IN
T1OUT 3 14 T1IN
V 3 10 V T2OUT 4 13 T2IN
CC L
T2OUT 4 13 T2IN
13 17
V 5 12 V
V 4 9 MODE
DD CC L
5
V 12 V
CC L
V 6 11 MODE
SW 5 8 PS DD
V 6 11 ON/OFF
DD
V
EE
SW 7 10 PS
GND 6 7 CAP
SW 7 10 CAP
V
EE
GND 8 9 CAP
GND 8 9 V
EE
DE PACKAGE
12-LEAD (4mm s 3mm) PLASTIC DFN
DHC PACKAGE
GN PACKAGE
T = 125C, = 43C/W, = 4.3C/W (4 Layer)
JMAX JA JC
16-LEAD (5mm 3mm) PLASTIC DFNs
16-LEAD (NARROW 0.150) PLASTIC SSOP
EXPOSED PAD (PIN 13) IS V , MUST BE SOLDERED TO PCB
EE
T = 125C, = 44C/W, = 4.3C/W (4 Layer)
JMAX JA JC
T = 125C, = 110C/W, = 40C/W (4 Layer)
JMAX JA JC
EXPOSED PAD (PIN 17) IS V , MUST BE SOLDERED TO PCB
EE
o redr i n Fro Mnoita
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2801CDE#PBF LTC2801CDE#TRPBF 2801 12-Lead (4mm 3mm) Plastic DFN 0C to 70C
LTC2801IDE#PBF LTC2801IDE#TRPBF 2801 12-Lead (4mm 3mm) Plastic DFN 40C to 85C
LTC2802CDE#PBF LTC2802CDE#TRPBF 2802 12-Lead (4mm 3mm) Plastic DFN 0C to 70C
LTC2802IDE#PBF LTC2802IDE#TRPBF 2802 12-Lead (4mm 3mm) Plastic DFN 40C to 85C
LTC2803CDHC#PBF LTC2803CDHC#TRPBF 2803 16-Lead (5mm 3mm) Plastic DFN 0C to 70C
LTC2803IDHC#PBF LTC2803IDHC#TRPBF 2803 16-Lead (5mm 3mm) Plastic DFN 40C to 85C
LTC2804CDHC#PBF LTC2804CDHC#TRPBF 2804 16-Lead (5mm 3mm) Plastic DFN 0C to 70C
LTC2804IDHC#PBF LTC2804IDHC#TRPBF 2804 16-Lead (5mm 3mm) Plastic DFN 40C to 85C
LTC2803CGN-1#PBF LTC2803CGN-1#TRPBF 28031 16-Lead (Narrow 0.150) Plastic SSOP 0C to 70C
LTC2803IGN-1#PBF LTC2803IGN-1#TRPBF 2803I1 16-Lead (Narrow 0.150) Plastic SSOP 40C to 85C
LTC2804CGN-1#PBF LTC2804CGN-1#TRPBF 28041 16-Lead (Narrow 0.150) Plastic SSOP 0C to 70C
LTC2804IGN-1#PBF LTC2804IGN-1#TRPBF 2804I1 16-Lead (Narrow 0.150) Plastic SSOP 40C to 85C
Consult LTC Marketing for parts speciefi d with wider operating temperature ranges. *The temperature grade is identiefi d by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: