TI MAX222IN

± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
D ESD Protection for RS-232 Bus Pins
D
D
D
D
D
D
D
DW OR N PACKAGE
(TOP VIEW)
− ±15-kV Human-Body Model
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operates at 5-V VCC Supply
Operates Up To 200 kbit/s
Low Supply Current in Shutdown
Mode . . . 2 µA Typical
External Capacitors . . . 4 × 0.1 µF
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Applications
− Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
NC
C1+
V+
C1−
C2+
C2−
V−
DOUT2
RIN2
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
SHDN
VCC
GND
DOUT1
RIN1
ROUT1
DIN1
DIN2
ROUT2
description/ordering information
The MAX222 consists 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). This device meets the requirements of
TIA/EIA-232-F and provides 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 5-V
supply. This device operates at data signaling rates up to 200 kbit/s and a maximum of 30-V/µs driver output
slew rate. By using SHDN, all receivers can be disabled.
ORDERING INFORMATION
PDIP (N)
0°C
0
C to 70
70°C
C
SOIC (DW)
PDIP (N)
−40°C
−40
C to 85
85°C
C
ORDERABLE
PART NUMBER
PACKAGE†
TA
SOIC (DW)
Tube of 20
MAX222CN
Tube of 20
MAX222CDW
Reel of 1000
MAX222CDWR
Tube of 20
MAX222IN
Tube of 20
MAX222IDW
Reel of 1000
MAX222IDWR
TOP-SIDE
MARKING
MAX222CN
MAX222C
MAX222IN
MAX222I
† 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.
Copyright  2004, Texas Instruments Incorporated
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*%$"# $ " #'&$$!"# '& ",& "&# &-!# #"%&"#
#"!*!* .!!"/+ *%$" '$&##0 *&# " &$&##!)/ $)%*&
"&#"0 !)) '!!&"&#+
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± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
Function Tables
EACH DRIVER
INPUT
DIN
OUTPUT
DOUT
L
H
H
L
H = high level, L = low
level
EACH RECEIVER
INPUT
RIN
OUTPUT
ROUT
L
H
H
L
Open
H
H = high level, L = low
level, Open = input
disconnected
or
connected driver off
logic diagram (positive logic)
12
15
DIN1
TTC/CMOS
Inputs
DOUT1
11
DIN2
DOUT2
13
14
ROUT1
TTC/CMOS
Outputs
RS-232
Outputs
8
RIN1
10
RS-232
Inputs
9
ROUT2
RIN2
18
SHDN
2
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± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6 V
Input voltage range, VI: Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to VCC − 0.3 V
Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 V
Output voltage range, VO: Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 V
Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to VCC + 0.3 V
Short-circuit duration, DOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Package thermal impedance, θJA (see Notes 2 and 3): DW package . . . . . . . . . . . . . . . . . . . . . . . . TBD°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . TBD°C/W
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltages are with respect to network GND.
2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 4 and Figure 4)
VCC
VIH
VIL
Supply voltage
MIN
NOM
MAX
4.5
5
5.5
Driver high-level input voltage
DIN
2
Shutdown high-level input voltage
SHDN
2
Driver low-level input voltage
DIN
Shutdown low-level input voltage
SHDN
Driver input voltage
DIN
VI
Receiver input voltage
TA
Operating free-air temperature
MAX222C
MAX222I
UNIT
V
V
V
0.8
V
0.8
V
0
5.5
−30
30
0
70
−40
85
V
°C
NOTE 4: Test conditions are C1−C4 = 0.1 µF at VCC = 5 V ± 0.5 V.
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 4 and Figure 4)
PARAMETER
ICC
TEST CONDITIONS
No load
Supply current
VCC = 5 V
SHDN = VCC
3 kW on both inputs
Shutdown supply current
SHDN
MIN
TYP
MAX
4
10
Shutdown input leakage current
mA
15
2
UNIT
50
µA
±1
µA
NOTE 4: Test conditions are C1−C4 = 0.1 µF at VCC = 5 V ± 0.5 V.
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3
± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
DRIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 4 and Figure 4)
PARAMETER
VOH
VOL
IIH
TEST CONDITIONS
MIN
TYP†
High-level output voltage
DOUT at RL = 3 kΩ to GND,
DIN = GND
5
8
Low-level output voltage
DOUT at RL = 3 kΩ to GND,
DIN = VCC
−5
−8
Driver high-level input current
DIN = VCC
Control high-level input current
SHDN = VCC
Driver low-level input current
DIN = 0 V
IIL
Control low-level input current
SHDN = 0 V
IOS‡
Short-circuit output current
VCC = 5.5 V,
VO = 0 V
Ioff
ro
Output leakage current
VCC = 5.5 V, SHDN = GND,
VCC, V+, and V− = 0 V,
VO = ±10 V
VO = ±2 V
±7
MAX
V
V
5
40
0.01
1
−5
−40
−0.01
−1
±22
±0.01
UNIT
µA
A
µA
A
mA
±10
µA
W
† All typical values are at VCC = 5 V, and TA = 25°C.
‡ Short-circuit durations should be controlled to prevent exceeding the device absolute power-dissipation ratings, and not more than one output
should be shorted at a time.
NOTE 4: Test conditions are C1−C4 = 0.1 µF at VCC = 5 V ± 0.5 V.
Output resistance
300
10 M
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 4 and Figure 4)
PARAMETER
TEST CONDITIONS
RL = 3 kΩ,
See Figure 1
MIN
TYP†
MAX
UNIT
Data rate
CL = 1000 pF,
One DOUT switching,
tPLH (D)
Propagation delay time,
low- to high-level output
See Figure 1
1.5
3.5
µs
tPHL (D)
Propagation delay time,
high- to low-level output
See Figure 1
1.3
3.5
µs
tPHL (D) −
tPLH (D)
Driver (+ to −) propagation delay
difference
tsk(p)
Pulse skew§
CL = 150 pF to 2500 pF
RL = 3 kΩ to 7 kΩ,
See Figure 2
SR(tr)
Slew rate, transition region
(see Figure 1)
RL = 3 kΩ to 7 kΩ,
VCC = 5 V
CL = 50 pF to 2500 pF
tET
Driver output enable time
(after SHDN goes high)
250
µs
tDT
Driver output disable time
(after SHDN goes low)
300
ns
† All typical values are at VCC = 5 V and TA = 25°C.
§ Pulse skew is defined as |tPLH − tPHL| of each channel of the same device.
NOTE 4: Test conditions are C1−C4 = 0.1 µF at VCC = 5 V ± 0.5 V.
4
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200
6
kbit/s
300
ns
300
ns
12
30
V/µs
± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
RECEIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 4 and Figure 4)
PARAMETER
VOH
VOL
High-level output voltage
VIT+
VIT−
Positive-going input threshold voltage
Vhys
ri
Input hysteresis (VIT+ − VIT−)
TEST CONDITIONS
IOH = −1 mA
IOL = 3.2 mA
Low-level output voltage
VCC = 5 V
VCC = 5 V
Negative-going input threshold voltage
TYP†
3.5
VCC − 0.2 V
1.7
VI = ±3 V to ±25 V
Input resistance
MIN
MAX
UNIT
V
0.4
V
2.4
V
0.8
1.3
0.2
0.5
1
V
V
3
5
7
kW
† All typical values are at VCC = 5 V, and TA = 25°C.
NOTE 4: Test conditions are C1−C4 = 0.1 µF at VCC = 5 V ± 0.5 V.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 4 and Figure 3)
tPLH (R)
tPHL (R)
PARAMETER
TEST
CONDITIONS
Propagation delay time, low- to high-level output
Propagation delay time, high- to low-level output
TYP†
MAX
CL= 150 pF
0.6
1
µs
CL= 150 pF
0.5
1
µs
MIN
UNIT
tPHL (R) −
tPLH (R)
Receiver (+ to −) propagation delay difference
100
ns
tsk(p)
Pulse skew‡
100
ns
† All typical values are at VCC = 5 V and TA = 25°C.
‡ Pulse skew is defined as |tPLH − tPHL| of each channel of the same device.
NOTE 4: Test conditions are C1−C4 = 0.1 µF, at VCC = 5 V ± 0.5 V.
ESD protection
PIN
DOUT, RIN
TEST CONDITIONS
Human-Body Model
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TYP
UNIT
±15
kV
5
± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION
3V
Input
Generator
(see Note B)
1.5 V
RS-232
Output
50 Ω
RL
1.5 V
0V
tPHL (D)
CL
(see Note A)
tPLH (D)
3V
Output
−3 V
TEST CIRCUIT
SR(tr) +
t
PHL (D)
6V
or t
VOH
3V
−3 V
VOL
VOLTAGE WAVEFORMS
PLH (D)
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 1. Driver Slew Rate
3V
Generator
(see Note B)
RS-232
Output
50 Ω
RL
1.5 V
Input
1.5 V
0V
CL
(see Note A)
tPHL (D)
tPLH (D)
VOH
50%
50%
Output
VOL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 2. Driver Pulse Skew
Input
3V
1.5 V
1.5 V
−3 V
Output
Generator
(see Note B)
50 Ω
CL
(see Note A)
tPHL (R)
tPLH (R)
VOH
50%
Output
50%
VOL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: ZO = 50 Ω, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
Figure 3. Receiver Propagation Delay Times
6
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± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
APPLICATION INFORMATION
18
1
NC
2
SHDN
VCC 17
C1+
+ CBYPASS
− = 0.1 µF
+
3
C1
†+
−
C3
0.1 µF, 0.1 µF, −
6.3 V
6.3 V
4
V+
GND
16
15
C1−
DOUT1
14
5
RIN1
C2+
5 kΩ
+
C2
−
0.1 µF,
6V
6 C2−
13
7
C4
DOUT2
RIN2
−
12
V−
ROUT1
DIN1
+
8
11
9
10
DIN2
ROUT2
5 kΩ
† C3 can be connected to VCC or GND.
NOTES: A. Resistor values shown are nominal.
B. Nonpolarized ceramic capacitors are acceptable. If polarized tantalum or electrolytic capacitors are used, they should be
connected as shown.
Figure 4. Typical Operating Circuit and Capacitor Values
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± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
APPLICATION INFORMATION
capacitor selection
The capacitor type used for C1−C4 is not critical for proper operation. The MAX222 requires 0.1-µF capacitors,
although capacitors up to 10 µF can be used without harm. Ceramic dielectrics are suggested for the 0.1-µF
capacitors. When using the minimum recommended capacitor values, ensure that the capacitance value does
not degrade excessively as the operating temperature varies. If in doubt, use capacitors with a larger (e.g., 2×)
nominal value. The capacitors’ effective series resistance (ESR), which usually rises at low temperatures,
influences the amount of ripple on V+ and V−.
Use larger capacitors (up to 10 µF) to reduce the output impedance at V+ and V−.
Bypass VCC to ground with at least 0.1 µF. In applications sensitive to power-supply noise generated by the
charge pumps, decouple VCC to ground with a capacitor the same size as (or larger than) the charge-pump
capacitors (C1−C4).
ESD protection
TI MAX222 devices have standard ESD protection structures incorporated on the pins to protect against
electrostatic discharges encountered during assembly and handling. In addition, the RS232 bus pins (driver
outputs and receiver inputs) of these devices have an extra level of ESD protection. Advanced ESD structures
were designed to successfully protect these bus pins against ESD discharge of ±15-kV when powered down.
ESD test conditions
ESD testing stringently is performed by TI, based on various conditions and procedures. Contact TI for a
reliability report that documents test setup, methodology, and results.
Human-Body Model
The Human-Body Model (HBM) of ESD testing is shown in Figure 5, while Figure 6 shows the current waveform
that is generated during a discharge into a low impedance. The model consists of a 100-pF capacitor, charged
to the ESD voltage of concern, and subsequently discharged into the DUT through a 1.5-kΩ resistor.
RD
1.5 kΩ
VHBM
+
−
CS
100 pF
DUT
Figure 5. HBM ESD Test Circuit
8
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± SLLS590D − SEPTEMBER 2003 − REVISED AUGUST 2004
APPLICATION INFORMATION
1.5
VHBM = 2 kV
DUT = 10-V, 1-Ω Zener Diode
I DUT − A
1
0.5
0
0
50
100
150
200
Time − ns
Figure 6. Typical HBM Current Waveform
Machine Model
The Machine Model (MM) ESD test applies to all pins using a 200-pF capacitor with no discharge resistance.
The purpose of the MM test is to simulate possible ESD conditions that can occur during the handling and
assembly processes of manufacturing. In this case, ESD protection is required for all pins, not just RS-232 pins.
However, after PC board assembly, the MM test no longer is as pertinent to the RS-232 pins.
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10
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PACKAGE OPTION ADDENDUM
www.ti.com
6-Dec-2006
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
MAX222CDW
ACTIVE
SOIC
DW
18
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222CDWG4
ACTIVE
SOIC
DW
18
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222CDWR
ACTIVE
SOIC
DW
18
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222CDWRG4
ACTIVE
SOIC
DW
18
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222CN
ACTIVE
PDIP
N
18
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
MAX222CNE4
ACTIVE
PDIP
N
18
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
MAX222IDW
ACTIVE
SOIC
DW
18
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222IDWG4
ACTIVE
SOIC
DW
18
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222IDWR
ACTIVE
SOIC
DW
18
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222IDWRG4
ACTIVE
SOIC
DW
18
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1YEAR
MAX222IN
ACTIVE
PDIP
N
18
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
MAX222INE4
ACTIVE
PDIP
N
18
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
Lead/Ball Finish
MSL Peak Temp (3)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
6-Dec-2006
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
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