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SLLS538B − JUNE 2002 − REVISED OCTOBER 2004
DB, DW, OR PW PACKAGE
(TOP VIEW)
D
Operate With 3-V to 5.5-V V
Operate Up To 1 Mbit/s
Supply
CC
D
D
D
D
D
Low Standby Current . . . 1 µA Typ
External Capacitors . . . 4 × 0.1 µF
EN
C1+
V+
FORCEOFF
1
2
3
4
5
6
7
8
9
10
20
19
V
CC
18 GND
Accept 5-V Logic Input With 3.3-V Supply
17
16
15
14
13
12
11
C1−
C2+
C2−
V−
DOUT1
RIN1
ROUT1
FORCEON
DIN1
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D
D
RS-232 Bus-Pin ESD Protection Exceeds
15 kV Using Human-Body Model (HBM)
DOUT2
RIN2
ROUT2
Applications
DIN2
INVALID
− Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
description/ordering information
The SN65C3223 and SN75C3223 consist of two line drivers, two line receivers, and a dual charge-pump circuit
with 15-kV ESD protection pin to pin (serial-port connection pins, including GND). The devices provide the
electrical interface between an asynchronous communication controller and the serial-port connector. The
charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The devices
operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/µs to 150 V/µs
Flexible control options for power management are available when the serial port is inactive. The
auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of
operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF
is set low and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 µA.
Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur.
Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled,
the device is activated automatically when a valid signal is applied to any receiver input. The INVALID output
is used to notify the user if an RS-232 signal is present at any receiver input. INVALID is high (valid data) if any
receiver input voltage is greater than 2.7 V or less than −2.7 V or has been between −0.3 V and 0.3 V for less
than 30 µs. INVALID is low (invalid data) if the receiver input voltage is between −0.3 V and 0.3 V for more than
30 µs. Refer to Figure 4 for receiver input levels.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
Tube of 25
SN75C3223DW
SOIC − DW
SSOP − DB
75C3223
Reel of 2000
Reel of 2000
Tube of 70
SN75C3223DWR
SN75C3223DBR
SN75C3223PW
SN75C3223PWR
SN65C3223DW
SN65C3223DWR
SN65C3223DBR
SN65C3223PW
SN65C3223PWR
CA3223
CA3223
0°C to 70°C
TSSOP − PW
Reel of 2000
Tube of 25
SOIC − DW
SSOP − DB
65C3223
CB3223
Reel of 2000
Reel of 2000
Tube of 70
−40°C to 85°C
TSSOP − PW
CB3223
Reel of 2000
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2004, Texas Instruments Incorporated
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