TP3232N/TP3222N
Microamp Supply-Current, 3V to 5.5V, Up to 470kbps RS-232 Transceivers
Features
Meets EIA/TIA-232 and V.28/V.24 Specifications
at 3V
Two Drivers and Two Receivers
Constant Date Rate Under Different C-Loading
Operates Up to 470kbps
On-Chip Voltage Converters Require Only Four
External 0.1μF Capacitors
Wide Power Supply Range: Single +3V to +5.5V
1μA Low Power Shutdown With Receivers Active
(TP3222N)
Drop-in Replacements for SP3232, SP3222,
MAX3232, MAX3222
TP3232N is a Low Power Upgrade for 5V HIN232,
HIN202, MAX232, MAX242
Description
The 3PEAK TP32xxN devices are 3.0V to 5.5V RS-232
transmitters/receivers which meet ElA/TIA-232 and V.28
/V.24 specifications, even at V
CC
= 3.0V. Each receiver
converts TIA/RS-232-F inputs to TTL/CMOS levels.
The devices have a typical threshold of 1.26V, a typical
hysteresis of 0.5V, and can accept ±25V inputs. Data
rates greater than 470kbps are guaranteed at worst case
load conditions. The devices are fully compatible with
3.3V-only systems, mixed 3.3V and 5.0V systems, and
5.0V-only systems.
The TP3232N/TP3222N has two receivers and two
transmitters. The TP3222N features a 1μA shutdown
mode that reduces power consumption in battery
powered portable systems. The TP3222N receivers
remain active in shutdown mode, allowing monitoring of
external devices while consuming only 1μA of supply
current.
Applications
Battery-Powered Equipment
Cell Phones Smart Phones
Cell-Phone Data Cables
Notebook, Subnotebook and Palmtop Computers
Printers
xDSL Modems
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property of
their respective owners.
TP3232N Slew Rate vs. Load Capacitance
Pin Configuration
(Top View)
SLEW RATE (V/μs)
20
18
16
14
12
10
8
6
4
2
0
0
1000
2000
3000
4000
5000
LOAD CAPACITANCE (pF)
TP3232N
Competitor
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Rev.B
1
TP3232N/TP3222N
Order Information
Model Name
TP3232N
TP3232N
TP3222N
Order Number
TP3232N-SR
TP3232N-TR
TP3222N-SR
Microamp Supply-Current,
3.0V to 5.5V, Up to 470kbps RS‐232 Transceivers
Package
16-Pin SOIC
16-Pin TSSOP
18-Pin SOIC
Transport Media, Quantity
Tape and Reel, 2,500
Tape and Reel, 3,000
Tape and Reel, 3,000
Marking
Information
3232N
3232T
3222N
Absolute Maximum Ratings
Note 1
V
CC
to GND................................................................-0.3V to +6V
V
+
to GND (Note 1) ...................................................-0.3V to +7V
V- to GND (Note 1) ...................................................+0.3V to -7V
V
+
+ |V-| (Note 1)...................................................................+13V
Input Voltages
TIN, EN, SHDN.....................................................-0.3V to +6V
R_IN to GND ...................................................................±25V
Output Voltages
T_OUT to GND................................................................±6.0V
R_OUT, R_OUTB ……………………....-0.3V to (VCC + 0.3V)
Short-Circuit Duration, T_OUT to GND.........................Continuous
Recommended Operating Conditions
Note 1
Temperature Range……………………………………-40°C to +125°C
Supply Voltage (V
CC
) …………….………………………….. 3.3V or 5V
Rx Input Voltage ………………………………………….. -15V to +15V
Thermal Resistance,
Θ
JA
(Typical)
16-Pin SOIC Package ………………………………….… 100°C/W
16-Pin TSSOP Package …………………..……………... 145°C/W
18-Pin SOIC Package …..……………………….….……... 75°C/W
Maximum Junction Temperature (Plastic Package) ………….+150°C
Maximum Storage Temperature Range ……………. -65°C to +150°C
Note 1:
V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
Electrical Characteristics
Test Conditions: V
CC
= 3.3V to 5.5V, T
A
= +25°C, C
1
- C
4
= 0.1μF, Unless Otherwise Specified. Boldface limits apply over the
operating temperature range
PARAMETER
CONDITIONS
TEMP. (°C)
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
(V
CC
= +3.3V or +5V, T
A
= +25°C)
Supply Current
Supply Current in
Power-Down
All R
IN
open
SHDN = GND
TP3222N
25
25
0.2
1.0
0.3
3.0
mA
μA
LOGIC AND TRANSMITTER INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold
Low
Input Logic Threshold
High
Input Leakage Current
Output Leakage
Current
Output Voltage Low
Output Voltage High
V
CC
= 3.3V
TIN, EN, SHDN
V
CC
= 5.0V
V
CC
= 3.3V
V
CC
= 5.0V
Full
Full
Full
Full
Full
TP3222N
Full
Full
Full
V
CC
- 0.2
0.18
V
CC
-
0.15
0.53
0.57
0.63
0.68
0.84
0.9
±1.2
0.95
1.02
±1.5
±0.01
0.25
V
V
V
μA
μA
V
V
TIN, EN, SHDN
TIN, EN, SHDN
EN = V
CC
I
OUT
= 1.6mA
I
OUT
= -1.0mA
2
Rev.B
www.3peakic.com
TP3232N/TP3222N
TEMP. (°C)
MIN
TYP
MAX
UNITS
Microamp Supply-Current,
3.0V to 5.5V, Up to 470kbps RS‐232 Transceivers
PARAMETER
RECEIVER INPUTS
Input Voltage Range
Input Threshold Low
Input Threshold High
Input Hysteresis
Input Resistance
TRANSMITTER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit
Current
Output Leakage
Current
V
OUT
= ±12V, V
CC
= 0V or 3V to 5.5V, SHDN = GND
All transmitter outputs loaded with 3kΩ to ground
V
CC
= V+ = V- = 0V, transmitter output = ±2V
Full
25
Full
±3.0
50
±60
±5.4
V
Ω
mA
V
CC
= 3.3V
V
CC
= 5V
V
CC
= 3.3V
V
CC
= 5V
25
25
25
25
25
25
25
3
-25
0.62
0.62
0.73
0.73
1.26
1.29
0.5
5
7
1.45
1.45
25
V
V
V
V
V
V
kΩ
CONDITIONS
Full
±0.01
μA
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation
Delay
Receiver Output
Enable Time
Receiver Output
Disable time
Transmitter Skew
Receiver Skew
Transition Region
Slew Rate
RS-232 Pins (T1OUT,
T2OUT) ESD
RS-232 Pins (R1IN,
R2IN) ESD
R
L
= 3k
Ω,
C
L
= 1000pF, one transmitter, switching
Receiver input to receiver
output, C
L
= 150pF
Normal Operation
Normal Operation
t
PHL
to t
PLH
t
PHL
to t
PLH
V
CC
= 3.3V, R
L
= 3kΩ to 7kΩ,
measured from 3V to -3V or
-3V to 3V
Human Body Model
C
L
= 150pF to
2500pF
C
L
= 150pF to
1000pF
t
PHL
t
PLH
TP3222N
f = 1kHz, R
L
= 1kΩ
Full
25
25
25
25
25
25
25
25
25
13.5
13.9
235
470
0.3
0.3
100
100
150
100
14
14
±8
16.5
16.5
kbps
μs
μs
ns
ns
ns
ns
V/μs
V/μs
kV
Human Body Model
25
±2
kV
www.3peakic.com
Rev.B
3
TP3232N/TP3222N
Test Circuits and Waveforms
Microamp Supply-Current,
3.0V to 5.5V, Up to 470kbps RS‐232 Transceivers
Test Circuit
Figure 1. Receiver Test Circuit and Waveforms for tPHL and tPLH Measurements
Test Circuit
Figure 2.
Driver Test Circuit and Waveforms for t
PHL
and t
PLH
Measurements
4
Rev.B
www.3peakic.com
TP3232N/TP3222N
Microamp Supply-Current,
3.0V to 5.5V, Up to 470kbps RS‐232 Transceivers
Pin Functions
PIN
VCC
V+
V-
GND
C1+
C1-
C2+
C2-
TIN
TOUT
RIN
ROUT
EN
SHDN
FUNCTION
System power supply input (3.0V to 5.5V).
Internally generated positive transmitter supply (+5.5V).
Internally generated negative transmitter supply (-5.5V).
Ground connection.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
TTL/CMOS compatible transmitter Inputs.
RS-232 level (nominally ±5.5V) transmitter outputs.
RS-232 compatible receiver inputs.
TTL/CMOS level receiver outputs.
Active low receiver enable control; doesn’t disable ROUTB outputs.
Active low input to shut down transmitters and on-board power supply, to place device in low
power mode.
Detailed Description
Charge-Pump Voltage Converter
The integrated charge pump in TP3232N/TP3222N generates negative power supply from a single supply VCC. The
charge pump requires a flying capacitors (C1, C2) and a reservoir capacitors (C3, C4) to generate V- supplies(Figure1).
At the same time a decoupling capacitor shall be applied between VCC and ground. Typical value for the flying
capacitor is 0.1uF. Typical value of the decoupling capacitor shall be same as or larger than that of the flying capacitor.
The TP3232N/TP3222N’s charge pump could provides output voltages of +5V and -5V under single +5V VCC.
Figure 1. Slew-Rate Test Circuits
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Rev.B
5
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