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SLLS534B − MAY 2002 − REVISED OCTOBER 2004
DB, DW, OR PW PACKAGE
(TOP VIEW)
D
Operates With 3-V to 5.5-V V
Operates 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+
PWRDOWN
1
2
3
4
5
6
7
8
9
10
20
19
V
CC
18 GND
Accepts 5-V Logic Input With 3.3-V Supply
17
16
15
14
13
12
11
C1−
C2+
C2−
V−
DOUT1
RIN1
ROUT1
NC
DIN1
DIN2
NC
RS-232 Bus-Pin ESD Protection Exceeds
15 kV Using Human-Body Model (HBM)
D
Applications
− Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
DOUT2
RIN2
ROUT2
NC − No internal connection
description/ordering information
The SN65C3222 and SN75C3222 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.
The SN65C3222 and SN75C3222 can be placed in the power-down mode by setting PWRDOWN low, which
draws only 1 µA from the power supply. When the devices are powered down, the receivers remain active while
the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is
disabled, V+ is lowered to V , and V− is raised toward GND. Receiver outputs also can be placed in the
CC
high-impedance state by setting EN high.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
T
A
PACKAGE
Tube of 25
SN75C3222DW
SOIC (DW)
SSOP (DB)
75C3222
Reel of 2000
Reel of 2000
Tube of 70
SN75C3222DWR
SN75C3222DBR
SN75C3222PW
SN75C3222PWR
SN65C3222DW
SN65C3222DWR
SN65C3222DBR
SN65C3222PW
SN65C3222PWR
CA3222
CA3222
−0°C to 70°C
−40°C to 85°C
TSSOP (PW)
Reel of 2000
Tube of 25
SOIC (DW)
SSOP (DB)
65C3222
CB3222
Reel of 2000
Reel of 2000
Tube of 70
TSSOP (PW)
CB3222
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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1
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