Design to Protect Submicron 3-V or 5-V
Silicon from Noise Transients
D
Applicable to Two High- or Low-Speed
Universal Serial Bus (USB) Host, Hub, or
Peripheral Ports
D
Port ESD Protection Capability Exceeds:
– 15-kV Human Body Model
– 2-kV Machine Model
D
Low Current Leakage ...1 µA Max
D
Stand-Off Voltage . . . 6.0 V Min
D
Low Capacitance . . . 35 pF Typ
description
The SN65220 is a single transient voltage
suppressor and the SN75240 and SN65240 are
dual transient voltage suppressors designed to
provide additional electrical noise transient
protection to two USB ports. Any cabled I/O can
be subjected to electrical noise transients from
various sources. These noise transients can
cause damage to the USB transceiver and/or the
USB ASIC if they are of sufficient magnitude and
duration. The USB ports are typically implemented in 3-V or 5-V digital CMOS with very limited
ESD protection. The SN65220, SN75240, and
SN65240 can significantly increase the port ESD
protection level and reduce the risk of damage to
the large and expensive circuits of the USB port.
The SN75240 is characterized for operation from
0°C to 70°C. The SN65220 and SN65240 are
characterized for operation from –40°C to 85°C.
IEC1000-4-2 ESD performance is measured at
the system level and system design influences the
results of these tests. A high compliance level may
be attained with proper system design.
SN65220
(Marked as SADI)
DBV PACKAGE
(TOP VIEW)
1
NC
NC
2
3
GND
NC – No internal connection
A
6
5
GND
4
B
GND
GND
SN65240, SN75240
(Marked as A65240 or A75240)
P OR PW PACKAGE
(TOP VIEW)
1
2
C
3
D
4
8
7
6
5
schematic
A or C
GND
B or D
(One Suppressor Shown)
NOTE A: All four GND terminals should be connected to ground.
CURRENT
vs
VOLTAGE
7.5
5
2.5
0
A
GND
B
GND
IEC1000-4-2 Compliance T est Levels
MAXIMUM TEST VOLTAGE
COMPLIANCE
LEVEL
122
244
368
4815
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
CONTACT
DISCHARGE
(kV)
–2.5
Current – A
AIR
DISCHARGE
(kV)
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
–5
–7.5
–10
NOTE A: Typical current versus voltage curve was derived
using the IEC 1.2/50-µs surge waveform.
–20–3040
–100
Voltage – V
Copyright 2000, Texas Instruments Incorporated
10
2030
1
SN65220, SN65240, SN75240
Operating free-air temperature, T
°C
SINGLE AND DUAL UNIVERSAL SERIAL BUS PORT
TRANSIENT SUPPRESSORS
SLLS266C – FEBRUARY 1997 – REVISED MARCH 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°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.
DISSIPATION RATING TABLE
PACKAGE
DBV385 mW3.1 mW/°C246 mW200 mW
P1150 mW9.2 mW/°C736 mW598 mW
PW520 mW4.2 mW/°C331 mW268 mW
‡
This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow.
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
recommended operating conditions
MINMAXUNIT
p
p
A
SN65240, SN65220–4085
SN75240070
°
†
electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
I
V
lkg
(BR)
Leakage currentVI = 6 V at A, B, C, or D terminals1µA
Breakdown voltageVI = 1 mA at A, B, C, or D terminals7V
APPLICATION INFORMATION
Full-Speed or
Low-Speed USB
Host-or-Hub Port
Transceiver
27 Ω
15 kΩ
15 kΩ
27 Ω
GND
(Full Speed Only)
D+
SN65220 or
1/2 SNx5240
D–
A
SN65220 or
1/2 SNx5240
B
D+
D–
Figure 1. Typical USB Application
1.5 kΩ
27 Ω
A
GND
B
1.5 kΩ
(Low Speed
Only)
27 Ω
Full-Speed or
Low-Speed USB
Down Stream
Transceiver
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN65220, SN65240, SN75240
SINGLE AND DUAL UNIVERSAL SERIAL BUS PORT
TRANSIENT SUPPRESSORS
SLLS266C – FEBRUARY 1997 – REVISED MARCH 2000
MECHANICAL INFORMATION
DBV (R-PDSO-G6)PLASTIC SMALL-OUTLINE
0,95
1,45
0,95
3,00
2,80
46
31
0,05 MIN
0,50
0,30
1,70
1,50
M
0,20
3,00
2,60
Seating Plane
0,10
0,15 NOM
Gage Plane
0°–8°
0,25
0,55
0,35
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion.
4073253-5/E 05/99
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
SN65220, SN65240, SN75240
SINGLE AND DUAL UNIVERSAL SERIAL BUS PORT
TRANSIENT SUPPRESSORS
SLLS266C – FEBRUARY 1997 – REVISED MARCH 2000
MECHANICAL INFORMATION
P (R-PDIP-T8) PLASTIC DUAL-IN-LINE PACKAGE
0.400 (10,60)
0.355 (9,02)
58
0.260 (6,60)
0.240 (6,10)
41
0.070 (1,78) MAX
0.020 (0,51) MIN
0.200 (5,08) MAX
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
0.010 (0,25)
M
0.310 (7,87)
0.290 (7,37)
Seating Plane
0°–15°
0.010 (0,25) NOM
4040082/B 03/95
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN65220, SN65240, SN75240
SINGLE AND DUAL UNIVERSAL SERIAL BUS PORT
TRANSIENT SUPPRESSORS
SLLS266C – FEBRUARY 1997 – REVISED MARCH 2000
MECHANICAL INFORMATION
PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PIN SHOWN
0,65
14
1
1,20 MAX
A
7
0,10 MIN
0,32
0,19
8
6,70
4,50
4,30
6,10
M
0,13
Seating Plane
0,10
0,15 NOM
Gage Plane
0,25
0°–8°
0,75
0,50
PINS **
DIM
A MAX
A MIN
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
8
3,10
2,90
14
5,10
4,90
16
5,10
20
6,60
6,404,90
24
7,90
7,70
28
9,80
9,60
4040064/D 10/95
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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