MAX3345EEUE+ [MAXIM]
Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, BICMOS, PDSO16, 4.40 MM, MO-153AB, TSSOP-16;
| 型号： | MAX3345EEUE+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, BICMOS, PDSO16, 4.40 MM, MO-153AB, TSSOP-16 驱动 信息通信管理 光电二极管 接口集成电路 驱动器 |
| 文件： | 总15页 (文件大小：406K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3171; Rev 0; 2/04
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
General Description
Features
The MAX3344E/MAX3345E USB transceivers convert
logic-level signals to USB signals, and USB signals to
logic-level signals. An internal 1.5kΩ USB pullup resistor
supports full-speed (12Mbps) USB operation. The
MAX3344E/MAX3345E provide built-in 15kꢀ ESꢁ-pro-
✕ ±15kV ESD Protection On D+ and D-
✕ Comply with USB Specification 1.1 (Full Speed 2.0)
✕ Separate VP and VM Inputs/Outputs
✕ V Down to 1.65V Allows Connection with Low-
L
Voltage ASICs
tection circuitry on the USB I/O pins, ꢁ+ and ꢁ-, and ꢀ
.
CC
✕ Enumerate Input—Allows USB Connection
through Software
The MAX3344E/MAX3345E operate with logic supply
voltages as low as 1.65ꢀ, ensuring compatibility with
low-voltage ASICs. The suspend mode lowers supply
current to less than 40µA. An enumerate function allows
devices to logically disconnect while plugged in. The
MAX3344E/MAX3345E are fully compliant with USB
specification 1.1, and full-speed operation under USB
specification 2.0.
✕ USB Detect Function
3.6V (min) to 4V (max)—MAX3344E
1V (min) to 2.8V (max)—MAX3345E
✕ Allow Single-Ended or Differential Logic I/O
✕ Internal Linear Regulator Allows Direct Powering
from the USB
✕ Internal Pullup Resistor for Full-Speed Operation
✕ Three-State Outputs
✕ No Power-Supply Sequencing Required
✕ Driver Active in Suspend Mode
✕ Available in Miniature Chip-Scale Package
The MAX3344E/MAX3345E have a USB detect that mon-
itors the USB bus for insertion and signals this event. The
MAX3344E USB_ꢁET threshold is between 3.6ꢀ (min)
and 4ꢀ (max), while the MAX3345E USB_ꢁET threshold
is between 1ꢀ (min) and 2.8ꢀ (max).
The MAX3344E/MAX3345E are available in the miniature
4 ✕ 4 UCSP™, as well as the small 16-pin TSSOP, and
are specified over the extended temperature range,
-40°C to +85°C.
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
Applications
MAX3344EEUE
MAX3344EEBE-T
MAX3345EEUE
MAX3345EEBE-T
16 TSSOP
Cell Phones
4 x 4 UCSP
16 TSSOP
PC Peripherals
Information Appliances
ꢁata Cradles
PꢁAs
4 x 4 UCSP
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
MP3 Players
ꢁigital Cameras
1µF
V
BUS
D+
SYSTEM
SUPPLY
VOLTAGE
V
CC
V
L
23.7Ω
23.7Ω
RCV
VPI
VMI
SUSP
OE
MAX3344E/
MAX3345E
D+
0.1µF
D-
D-
GND
VTRM
SYSTEM INTERFACE
USB_DET
MODE
ENUM
VPO
1µF
USB
INTERFACE
CONNECTOR
VMO
GND
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
ABSOLUTE MAXIMUM RATINGS
(All voltages refer to GNꢁ, unless otherwise noted.)
Maximum Continuous Current (all other pins).................. 15mA
Supply ꢀoltage (ꢀ ) ...............................................-0.3ꢀ to +6ꢀ
Continuous Power ꢁissipation (T = +70°C)
CC
A
Output of Internal Regulator (ꢀTRM)..........-0.3ꢀ to (ꢀ
+ 0.3ꢀ)
16-Pin TSSOP (derate 9.4mW/°C above +70°C)...754mW (U16-2)
4 ✕ 4 UCSP (derate 8.2mW/°C above +70°C)...659mW (B16-1)
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Temperature (soldering) Reflow............................+235°C
CC
Input ꢀoltage (ꢁ+, ꢁ-)..............................................-0.3ꢀ to +6ꢀ
System Supply ꢀoltage (ꢀ ).....................................-0.3ꢀ to +6ꢀ
L
RCꢀ, SUSP, ꢀMO, MOꢁE, ꢀPO, OE, ꢀMI,
ꢀPI, USB_ꢁET, ENUM...............................-0.3ꢀ to (ꢀ + 0.3ꢀ)
L
Short-Circuit Current (ꢁ+, ꢁ-) to ꢀ
or
CC
GNꢁ (Note 1) .........................................................Continuous
Note 1: External 23.7Ω resistors connected to ꢁ+ and ꢁ-.
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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(ꢀ
= 4ꢀ to 5.5ꢀ bypassed with 1µF to GNꢁ, GNꢁ = 0, ꢀ = 1.65ꢀ to 3.6ꢀ, ENUM = ꢀ , T = T
to T
, unless otherwise
MAX
CC
L
L
A
MIN
noted. Typical values are at ꢀ
= 5ꢀ, ꢀ = 2.5ꢀ, T = +25°C.) (Note 2)
CC
L
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY INPUTS (VCC, VTRM, VL)
Regulated Supply ꢀoltage
Output
ꢀ
Internal regulator
3.0
3.3
3.6
ꢀ
ꢀTRM
ꢀ
Input Range
ꢀ
4.0
5.5
ꢀ
ꢀ
CC
CC
ꢀ Input Range
ꢀ
1.65
3.60
L
L
Full-speed transmitting/receiving at
12Mbps, C = 50pF on ꢁ+ and ꢁ-
L
Operating ꢀ
Supply Current
I
10
8
mA
mA
CC
ꢀCC
Full-speed transmitting/receiving at
12Mbps
Operating ꢀ Supply Current
L
I
ꢀL
Full-speed idle: ꢀ > 2.7ꢀ, ꢀ < 0.3ꢀ
340
390
450
500
ꢁ+
ꢁ-
Full-Speed Idle and SE0 Supply
Current
I
µA
µA
ꢀCC(IꢁLE)
SE0: ꢀ < 0.3ꢀ, ꢀ < 0.3ꢀ
ꢁ+
ꢁ-
Static ꢀ Supply Current
L
I
Full-speed idle, SE0, or suspend mode
12.5
ꢀL(STATIC)
Suspend Supply Current
I
SUSP = OE = high
40
20
µA
µA
ꢀCC(SUSP)
ꢁisable-Mode Supply Current
I
ꢀ = GNꢁ or open
L
ꢀCC(ꢁIS)
ꢁ+/ꢁ- ꢁisable-Mode
Load Current
I
ꢀ = GNꢁ or open, ꢀ = 0 or +5.5ꢀ
5
µA
µA
µA
ꢁ_(ꢁIS)
L
ꢁ_
Sharing-Mode ꢀ Supply
L
Current
ꢀ
= GNꢁ or open, OE = low, SUSP =
CC
I
20
20
ꢀL(SHARING)
high
ꢁ+/ꢁ- Sharing-Mode
Load Current
I
ꢀ
= GNꢁ or open, ꢀ = 0 or +5.5ꢀ
CC ꢁ_
ꢁ_(SHARING)
LOGIC-SIDE I/O
Input High ꢀoltage
Input Low ꢀoltage
ꢀ
SUSP, MOꢁE, ENUM, OE, ꢀMO, ꢀPO
SUSP, MOꢁE, ENUM, OE, ꢀMO, ꢀPO
2/3 x ꢀ
ꢀ
ꢀ
IH
L
ꢀ
0.4
0.4
IL
ꢀPI, ꢀMI, RCꢀ, USB_ꢁET; I
2mA
=
SOURCE
Output-ꢀoltage High
Output-ꢀoltage Low
ꢀ
ꢀ - 0.4
L
ꢀ
ꢀ
OH
ꢀ
ꢀPI, ꢀMI, RCꢀ, USB_ꢁET; I
= -2mA
SINK
OL
2
_______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
ELECTRICAL CHARACTERISTICS (continued)
(ꢀ
= 4ꢀ to 5.5ꢀ bypassed with 1µF to GNꢁ, GNꢁ = 0, ꢀ = 1.65ꢀ to 3.6ꢀ, ENUM = ꢀ , T = T
to T
, unless otherwise
MAX
CC
L
L
A
MIN
noted. Typical values are at ꢀ
= 5ꢀ, ꢀ = 2.5ꢀ, T = +25°C.) (Note 2)
CC
L
A
PARAMETER
SYMBOL
CONDITIONS
SUSP, MOꢁE, ENUM, OE, ꢀMO, ꢀPO = 0 or
ꢀ
L
MIN
TYP
MAX
UNITS
Input Leakage Current
1
µA
USB-SIDE I/O
Output-ꢀoltage Low
Output-ꢀoltage High
ꢀ
R = 1.5kΩ from ꢁ+ or ꢁ- to 3.6ꢀ
0.3
3.6
ꢀ
ꢀ
OL
L
ꢀ
R = 15kΩ from ꢁ+ and ꢁ- to GNꢁ
L
2.8
1
OH
Three-state driver, ENUM = 0, ꢀ = 0 or
ꢁ_
+3.6ꢀ
Input Impedance
Z
MΩ
IN
Single-Ended Input-ꢀoltage High
Single-Ended Input-ꢀoltage Low
ꢀ
2.0
ꢀ
ꢀ
IH
ꢀ
0.8
IL
Receiver Single-Ended
Hysteresis
ꢀ
200
mꢀ
mꢀ
ꢀ
HYS
ꢁIFF
ꢁifferential Input Sensitivity
ꢀ
200
0.8
4.6
Input Common-Mode ꢀoltage
Range
ꢀ
2.5
CM
ꢁriver Output Impedance
Internal Pullup Resistor
R
16.0
1.540
4.0
Ω
OUT
R
1.410
3.6
1
1.500
kΩ
PU
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
MAX3344E
MAX3344E
MAX3345E
MAX3345E
MAX3344E
USBLH1
USBHL1
USBLH2
USBHL2
USBHYS
USB_ꢁET Threshold
ꢀ
2.8
USB_ꢁET Hysteresis
LINEAR REGULATOR
External Capacitor
25
mꢀ
µF
C
Compensation of linear regulator
1
OUT
ESD PROTECTION (V , D+, D-)
CC
Human Body Model
±15
±10
8
kꢀ
kꢀ
kꢀ
IEC1000-4-2 Air-Gap ꢁischarge
IEC1000-4-2 Contact ꢁischarge
TIMING CHARACTERISTICS
(ꢀ
= 4ꢀ to 5.5ꢀ, GNꢁ = 0, ꢀ = 1.65ꢀ to 3.6ꢀ, ENUM = ꢀ , T = T
to T
, unless otherwise noted. Typical values are at
MAX
CC
L
L
A
MIN
ꢀ
= 5ꢀ, ꢀ = 2.5ꢀ, T = +25°C.) (Figures 2–6) (Note 2)
CC
L A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TRANSMITTER
OE to Transmit ꢁelay Enable Time
t
t
Figures 2 and 6c
Figures 2 and 6c
20
20
ns
ns
PZꢁ
OE to ꢁriver Three-State ꢁelay
ꢁriver ꢁisable Time
PꢁZ
t
t
t
t
MOꢁE = high, Figures 4 and 6b
MOꢁE = high, Figures 4 and 6b
MOꢁE = low, Figures 3 and 6c
MOꢁE = low, Figures 3 and 6c
10
10
11
11
18
18
20
20
PLH1(drv)
PHL1(drv)
PLH0(drv)
PHL0(drv)
ꢀPO/ꢀMO to ꢁ+/ꢁ- Propagation
ꢁelay
ns
ns
ꢀPO/ꢀMO ꢁ+/ꢁ- Propagation
ꢁelay
_______________________________________________________________________________________
3
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
TIMING CHARACTERISTICS (continued)
(ꢀ
= 4ꢀ to 5.5ꢀ, GNꢁ = 0, ꢀ = 1.65ꢀ to 3.6ꢀ, ENUM = ꢀ , T = T
to T
, unless otherwise noted. Typical values are at
MAX
CC
L
L
A
MIN
ꢀ
= 5ꢀ, ꢀ = 2.5ꢀ, T = +25°C.) (Figures 2–6) (Note 2)
CC
L A
PARAMETER
SYMBOL
CONDITIONS
C = 50pF, 10% to 90% of
MIN
TYP
MAX
UNITS
L
Rise Time ꢁ+/ꢁ-
Fall Time ꢁ+/ꢁ-
t
4
20
ns
R1
|ꢀ
OH
- ꢀ
OL
|
C = 50pF, 90% to 10% of
L
t
4
20
ns
F1
|ꢀ
OH
- ꢀ
OL
|
Rise- and Fall-Time Matching
Output Signal Crossover
t
/t
(Note 3)
(Note 3)
90
111
2.0
%
ꢀ
R1 F1
ꢀ
1.3
CRS
DIFFERENTIAL RECEIVER (Figures 5 and 6a)
t
t
18
18
ns
ns
PLH(RCꢀ)
ꢁ+/ꢁ- to RCꢀ Propagation ꢁelay
PHL(RCꢀ)
SINGLE-ENDED RECEIVERS (Figures 5 and 6a)
t
18
18
ns
ns
PLH(SE)
PHL(SE)
ꢁ+/ꢁ- to ꢀPI or ꢀMI Propagation
ꢁelay
t
Note 2: Parameters are 100% production tested at 25°C, limits over temperature are guaranteed by design.
Note 3: Guaranteed by design, not production tested.
Typical Operating Characteristics
(ꢀ
= 5ꢀ, ꢀ = 3.3ꢀ, T = +25°C, unless otherwise noted.)
A
L
CC
DIFFERENTIAL RECEIVER PROPAGATION
DELAY vs. V
SINGLE-ENDED RECEIVER PROPAGATION
DIFFERENTIAL RECEIVER PROPAGATION
DELAY vs. V
DELAY vs. V
CC
L
L
15
14
13
12
11
10
9
20
18
16
14
12
10
20
T
= +85°C
A
T
= +85°C
A
18
16
14
12
10
T
= +85°C
A
T
= +25°C
A
T
= +25°C
T
= +25°C
A
A
T
= -40°C
T = -40°C
A
A
8
T
A
= -40°C
7
4.00 4.25 4.50 4.75 5.00 5.25 5.50
(V)
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
V
CC
V (V)
L
V (V)
L
4
_______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
Typical Operating Characteristics (continued)
(ꢀ
= 5ꢀ, ꢀ = 3.3ꢀ, T = +25°C, unless otherwise noted.)
A
L
CC
SINGLE-ENDED RECEIVER PROPAGATION
LOGIC CURRENT CONSUMPTION IN
SUSPEND MODE
DELAY vs. V
TRANSMITTER SKEW vs. V
CC
CC
15
10
9
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
T
= +85°C
A
14
13
12
11
10
9
T
= -40°C
A
8
7
T
= +25°C
= -40°C
A
6
T
A
= +25°C
5
T
A
= +85°C
4
8
T
A
7
3
4.00 4.25 4.50 4.75 5.00 5.25 5.50
(V)
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
4.00 4.25 4.50 4.75 5.00 5.25 5.50
(V)
V
CC
V (V)
L
V
CC
V
CURRENT CONSUMPTION IN
SUSPEND MODE
CC
VTRM vs. V
RISE- AND FALL-TIME MATCHING
CC
MAX3344E/45E toc09
32
31
30
29
28
27
26
25
24
23
22
3.5
3.4
3.3
3.2
3.1
3.0
f = 6MHz
D+
1V/div
D-
I
= 15mA
VTRM
4.00 4.25 4.50 4.75 5.00 5.25 5.50
(V)
20ns/div
4.00 4.25 4.50 4.75 5.00 5.25 5.50
(V)
V
CC
V
CC
TRANSMISSION IN SUSPEND MODE
SUSPEND RESPONSE
USB_DET RESPONSE
(SUSP = 1)
MAX3344E/45E toc10
MAX3344E/45E toc12
MAX3344E/45E toc11
VPO
V
SUSP
0
CC
VMO
2V/div
0
2V/div
D+
2V/div
0
USB_DET
0
100ns/div
10µs/div
2µs/div
_______________________________________________________________________________________
5
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
-in Description
PIN
TSSOP
INPUT/
OUTPUT
NAME
FUNCTION
UCSP
ꢁ2
Receiver Output. Single-ended CMOS output. RCꢀ responds to the differential input
on ꢁ+ and ꢁ-.
1
2
RCꢀ
ꢀPO
Output
Input
ꢁ1
Logic-Level ꢁata Input. ꢀPO is level translated to ꢁ+.
Mode-Control Input. Selects differential (mode 1) or single-ended (mode 0) input for
the system side when converting logic-level signals to USB level signals. Force
MOꢁE high to select mode 1. Force MOꢁE low to select mode 0.
3
C2
MOꢁE
Input
4
5
C1
B1
ꢀMO
Input
Input
Logic-Level ꢁata Input. ꢀMO is level translated to ꢁ-.
Output Enable. ꢁrive OE low to enable data transmission on ꢁ+ and ꢁ-. ꢁrive OE
high to disable data transmission or to receive data.
OE
Suspend Input. ꢁrive SUSP low for normal operation. ꢁrive SUSP high for low-power
state. In low-power state, RCꢀ is low and ꢀPI/ꢀMI are active.
6
B2
SUSP
Input
7
8
A1
A2
ꢀPI
Output
Output
Logic-Level ꢁata Output. ꢀPI is the level-translated value of ꢁ+.
Logic-Level ꢁata Output. ꢀMI is the level-translated value of ꢁ-.
ꢀMI
Enumerate. ꢁrive ENUM high to connect the internal 1.5kΩ resistor from ꢁ+ to 3.3ꢀ.
ꢁrive ENUM low to disconnect the internal 1.5kΩ resistor.
9
B3
ENUM
Input
USB-Side Power-Supply Input. Connect ꢀ
to the incoming USB power supply.
CC
10
11
12
A3
A4
B4
ꢀ
Power
Power
CC
Bypass ꢀ
to GNꢁ with a 1µF ceramic capacitor.
CC
GNꢁ
ꢁ-
Ground
Input/
Output
Negative USB ꢁifferential ꢁata Input/Output. Connect to the USB’s ꢁ- signal through
a 23.7Ω ±1% resistor.
Input/
Output
Positive USB ꢁifferential ꢁata Input/Output. Connect to the USB’s ꢁ+ signal through
a 23.7Ω ±1% resistor.
13
14
15
C4
ꢁ4
ꢁ3
ꢁ+
Regulated Output ꢀoltage. ꢀTRM provides a 3.3ꢀ output derived from ꢀ . Bypass
CC
ꢀTRM to GNꢁ with a 1µF (min) low-ESR capacitor, such as ceramic or plastic film types.
ꢀTRM
Power
Power
System-Side Power-Supply Input. Connect to the system’s logic-level power supply,
1.65ꢀ to 3.6ꢀ.
ꢀ
L
USB ꢁetector Output. A high at USB_ꢁET signals to the ASIC that ꢀ
is present. A
CC
low at USB_ꢁET indicates that ꢀ is not present. The MAX3344E USB_ꢁET
CC
threshold is between 3.6ꢀ (min) and 4ꢀ (max), while the MAX3345E USB_ꢁET
threshold is between 1ꢀ (min) and 2.8ꢀ (max).
16
C3
USB_ꢁET
Output
the USB I/O, ꢁ+ and ꢁ-, and ꢀ
are ESꢁ protected to
CC
Detailed Description
15kꢀ. The MAX3344E/MAX3345E can receive USB
The MAX3344E/MAX3345E are bidirectional transceivers
that convert single-ended or differential logic-level signals
to differential USB signals, and convert differential USB
signals to single-ended or differential logic-level signals.
power (ꢀ ) directly from the USB connection and
CC
operate with logic supplies (ꢀ ) down to 1.65ꢀ, while
L
still meeting the USB physical layer specifications. The
MAX3344E/MAX3345E support full-speed (12Mbps)
USB specification 2.0 operation.
The MAX3344E/MAX3345E are operational from ꢀ
=
CC
5.5ꢀ to ꢀ = 3ꢀ (electrical specifications are not guaran-
CC
The MAX3344E/MAX3345E have an enumerate feature
that functions when power is applied. ꢁriving ENUM low
disconnects the internal 1.5kΩ pullup resistor from ꢁ+
enumerating the USB. This is useful if changes in commu-
nication protocol are required while power is applied, and
while the USB cable is connected.
teed for ꢀ
< 4ꢀ). Both devices include an internal
CC
1.5kΩ pullup resistor that connects and disconnects ꢁ+
to ꢀTRM (see the Functional Diagram).
The MAX3344E/MAX3345E are tolerant to power seq-
uencing with either ꢀ
> ꢀ or ꢀ > ꢀ . Additionally,
L L CC
CC
6
_______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
-owerꢂꢁupply Configurations
Device Control
Normal Operating Mode
to system power supplies (Table
D+ and D-
ꢁ+ and ꢁ- are the USB-side transmitter I/O connec-
tions, and are ESꢁ protected to 15kꢀ using the
Human Body Model, 10kꢀ using IEC 1000-4-2 Air-
Gap ꢁischarge, and 8kꢀ using IEC 1000-4-2 Contact
ꢁischarge, making the MAX3344E/MAX3345E ideal for
applications where a robust transmitter is required. A
23.7Ω resistor is required on ꢁ+ and ꢁ- for normal
operation (see the External Resistors section).
Connect ꢀ and ꢀ
L
CC
1). Connect ꢀ to a +1.65ꢀ to +3.6ꢀ supply. Connect
L
ꢀ
to a +4.0ꢀ to +5.5ꢀ supply. Alternatively, the
CC
MAX3344E/MAX3345E can derive power from a single
Li+ battery. Connect the battery to ꢀ remains
ꢀ
CC. ꢀTRM
as low as +3.1ꢀ.
above +3.0ꢀ for ꢀ
CC
Additionally, the MAX3344E/MAX3345E can derive
power from a 3.3ꢀ 10% voltage regulator. Connect ꢀ
and ꢀTRM to an external +3.3ꢀ voltage regulator.
CC
ENUM
USB specification 2.0 requires a 1.5kΩ pullup resistor
on ꢁ+ for full-speed (12Mbps) operation. Controlled by
enumerate (ENUM), the MAX3344E/MAX3345E provide
this internal 1.5kΩ resistor. ꢁrive ENUM high to connect
the pullup resistor from ꢁ+ to ꢀTRM. ꢁrive ENUM low to
disconnect the pullup resistor from ꢁ+ to ꢀTRM.
Disable Mode
to a system power supply and leave ꢀ
Connect ꢀ
CC
L
unconnected or connect to GNꢁ. ꢁ+ and ꢁ- enter a tri-
state mode and ꢀ consumes less than 20µA of supply
current. ꢁ+ and ꢁ- withstand external signals up to
+5.5ꢀ in disable mode (Table 2).
CC
VPO/VMO, VPI/VMI, and OE
The MAX3344E/MAX3345E system-side inputs are ꢀPO
and ꢀMO. ꢁata comes into the MAX3344E/MAX3345E
through ꢀPO and ꢀMO. ꢀPO and ꢀMO operate either
differentially with ꢀPO as the positive terminal and ꢀMO
as the negative terminal, or single ended with ꢀPO as
the data input (see the MODE section).
Sharing Mode
Connect ꢀ to a system power supply and leave ꢀ
(or
L
CC
ꢀ
and ꢀTRM) unconnected or connect to GNꢁ. ꢁ+
CC
and ꢁ- enter a tri-state mode, allowing other circuitry to
share the USB ꢁ+ and ꢁ- lines, and ꢀ consumes less
L
than 20µA of supply current. ꢁ+ and ꢁ- withstand exter-
nal signals up to +5.5ꢀ in sharing mode (Table 2).
Table 1. Power-Supply Configurations
V
(V)
VTRM (V)
V (V)
L
CONFIGURATION
Normal mode
NOTES
CC
+4.0 to +5.5
+3.1 to +4.5
+3.0 to +3.6
GNꢁ or floating
+3.0 to +5.5
+3.3 Output
+3.3 Output
+3.0 to +3.6 Input
Output
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
GNꢁ or floating
—
—
Battery supply
ꢀoltage regulator supply
Sharing mode
—
Table 2
Table 2
Output
ꢁisable mode
Table 2. Disable-Mode and Sharing-Mode Configurations
INPUTS/OUTPUTS
DISABLE MODE
SHARING MODE
•
•
•
+5ꢀ input/+3.3ꢀ output
+3.3ꢀ input/+3.3ꢀ input
+3.7ꢀ input/+3.3ꢀ output
•
•
•
Floating or connected to GNꢁ
< +3.6ꢀ (MAX3344E)
< +1.0ꢀ (MAX3345E)
ꢀ
ꢀ
/ꢀTRM
CC
Floating or connected to GNꢁ
High impedance
+1.65ꢀ to +3.6ꢀ input
High impedance
L
ꢁ+ and ꢁ-
High impedance for OE = Low
High for OE = High
Undefined**
ꢀPI and ꢀMI
Invalid*
RCꢀ
Invalid*
SPEEꢁ, SUSP, OE, ENUM
High impedance
High impedance
*High Impedance or low.
**High or low.
_______________________________________________________________________________________
7
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
The MAX3344E/MAX3345E system-side outputs are
R
R
1MΩ
D
C
ꢀPI, ꢀMI, and RCꢀ. The MAX3344E/MAX3345E send
data through ꢀPI, ꢀMI, and RCꢀ. ꢀPI and ꢀMI are out-
puts to the single-ended receivers and RCꢀ is the out-
put of the differential receiver.
1500Ω
DISCHARGE
RESISTANCE
CHARGE-CURRENT-
LIMIT RESISTOR
Output enable (OE) controls data transmission. ꢁrive OE
low to enable data transmission on ꢁ+ and ꢁ-. ꢁrive OE
high to disable data transmission or receive data.
HIGH-
VOLTAGE
DC
DEVICE
UNDER
TEST
C
s
100pF
STORAGE
CAPACITOR
SOURCE
MODE
MOꢁE is a control input that selects whether differential
or single-ended logic signals are recognized by the
system side of the MAX3344E/MAX3345E. ꢁrive MOꢁE
high to select differential mode with ꢀPO as the positive
terminal and ꢀMO as the negative terminal. ꢁrive
MOꢁE low to select single-ended mode with ꢀPO as
the data input (Table 3).
Figure 1a. Human Body ESD Test Models
VTRM
ꢀTRM is the 3.3ꢀ output of the internal linear voltage
regulator. ꢀTRM powers the internal circuitry of the USB
side of the MAX3344E/MAX3345E. Connect a 1µF (min)
low-ESR ceramic or plastic capacitor from ꢀTRM to
GNꢁ, as close to ꢀTRM as possible. ꢁo not use ꢀTRM
to power external circuitry.
I
100%
90%
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
I
P
r
AMPERES
36.8%
10%
0
TIME
0
V
CC
t
RL
t
DL
Bypass ꢀ
to GNꢁ with a 1µF ceramic capacitor as
CC
CURRENT WAVEFORM
close to the device as possible. If ꢀ
drops below the
CC
USB detect threshold, supply current drops
below 20µA avoiding excessive ꢀ current consump-
Figure 1b. Human Body Model Current Waveform
CC
tion, and ꢁ+/ꢁ- enter a high-impedance state allowing
other devices to drive the lines.
R
R
D
C
USB Detect
330Ω
50MΩ TO 100MΩ
USB detect output (USB_ꢁET) signals that ꢀ
is pre-
CC
sent. A high at USB_ꢁET indicates that ꢀ
is present,
is not pre-
DISCHARGE
RESISTANCE
CHARGE-CURRENT-
LIMIT RESISTOR
CC
CC
while a low at USB_ꢁET indicates that ꢀ
sent. The MAX3344E USB_ꢁET threshold is between
3.6ꢀ (min) and 4ꢀ (max), while the MAX3345E USB_ꢁET
threshold is between 1ꢀ (min) and 2.8ꢀ (max).
HIGH-
VOLTAGE
DC
DEVICE
UNDER
TEST
C
150pF
STORAGE
CAPACITOR
s
SOURCE
SUSP
Suspend (SUSP) is a control input. Force SUSP high to
place the MAX3344E/MAX3345E in a low-power state.
In this state, the quiescent supply current into ꢀ
less than 40µA and RCꢀ goes low.
is
CC
Figure 1c. IEC 1000-4-2 ESD Test Model
In suspend mode, ꢀPI and ꢀMI remain active as
receive outputs and ꢀTRM stays on. The MAX3344E/
MAX3345E continue to receive data from the USB,
allowing the µP to sense activity on the ꢁ+/ꢁ- lines and
wake up the MAX3344E/MAX3345E.
used to signal a remote wake-up by driving a signal on
ꢁ+ and ꢁ- for a period of 1ms to 15ms. In suspend
mode, data can only be transmitted with full-speed
slope control.
The MAX3344E/MAX3345E can also transmit data to
ꢁ+ and ꢁ- while in suspend mode. This function is
8
_______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
Data Transfer
V
L
Receiving Data from the USB
ꢁata received from the USB are output to ꢀPI/ꢀMI in
OE
0V
V /2
L
either of two ways, differentially or single ended. To
receive data from the USB, force OE high and SUSP low.
ꢁifferential data arriving at ꢁ+/ꢁ- appear as differential
logic signals at ꢀPI/ꢀMI, and as a single-ended logic sig-
nal at RCꢀ. If both ꢁ+ and ꢁ- are low, then ꢀPI and ꢀMI
are low, signaling a single-ended zero condition on the
bus; RCꢀ remains in the last known state (Table 3).
t
t
PDZ
PZD
V
V
- 0.3V
+ 0.3V
OHD
D+/D-
OLD
Transmitting Data to the USB
The MAX3344E/MAX3345E output data to the USB dif-
ferentially on ꢁ+ and ꢁ-. The logic driving signals can
be either differential or single ended. For sending differ-
ential logic, force MOꢁE high, force OE and SUSP low,
and apply data to ꢀPO and ꢀMO. ꢁ+ then follows ꢀPO,
and ꢁ- follows ꢀMO. To send single-ended logic sig-
nals, force MOꢁE, SUSP, and OE low, and apply data to
ꢀPO/ꢀMO.
Figure 2. Enable and Disable Timing, Transmitter
V
L
V /2
L
VPO
0V
EꢁD -rotection
t
t
PHLO
PLHO
To protect the MAX3344E/MAX3345E against ESꢁ, ꢁ+
and ꢁ- have extra protection against static electricity to
protect the device up to 15kꢀ. The ESꢁ structures
D+
D-
VTRM
withstand high ESꢁ in all states normal operation,
—
suspend, and powered down. For the 15kꢀ ESꢁ struc-
tures to work correctly, a 1µF or greater capacitor must
be connected from ꢀTRM to GNꢁ.
0V
ESꢁ protection can be tested in various ways; the ꢁ+
and ꢁ- input/output pins are characterized for protection
to the following limits:
Figure 3. Mode 0 Timing
1) 15kꢀ using the Human Body Model
V
L
2) 8kꢀ using the IEC 1000-4-2 Contact ꢁischarge
Method
VPO
V /2
L
3) 10kꢀ using the IEC 1000-4-2 Air-Gap Method
0V
t
t
ESD Test Conditions
ESꢁ performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents test
setup, test methodology, and test results.
PHL1
PLH1
V
L
V /2
L
V /2
L
VMO
0V
Human Body Model
Figure 1a shows the Human Body Model, and Figure 1b
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of a
100pF capacitor charged to the ESꢁ voltage of interest,
which is then discharged into the test device through a
1.5kΩ resistor.
t
t
PLH1
PLH1
D+
D-
VTRM
0V
Figure 4. Mode 1 Timing
_______________________________________________________________________________________
9
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
Table 3a. Truth Table Transmit (SUSP = 0, OE = 0, ENUM = X)
INPUT
OUTPUT
MODE
VPO
VMO
D+
0
D-
1
0
0
0
0
1
0
1
RCV
VPI
0
VMI
1
RESULT
LOGIC 0
SE0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
RCꢀ*
1
0
0
0
1
1
0
LOGIC 1
SE0
0
RCꢀ*
RCꢀ*
0
0
0
0
0
0
SE0
0
0
1
LOGIC 0
LOGIC 1
UNꢁEFINEꢁ
1
1
1
0
1
X
1
1
*RCV denotes the signal level on output RCV just before SE0 state occurs. This level is stable during the SE0 period.
Table 3b. Truth Table Receive (SUSP = 0, OE = 1, ENUM = X)
INPUT
OUTPUT
VPI
0
VMI
0
D+
0
D-
0
RCV
RESULT
SE0
RCꢀ*
0
1
0
1
X
0
1
LOGIC 0
LOGIC 1
UNꢁEFINEꢁ
1
0
1
0
1
1
1
1
*RCV denotes the signal level on output RCV just before SE0 state occurs. This level is stable during the SE0 period.
Table 3c. Truth Table Transmit in Suspend* (SUSP = 1, OE = 0, ENUM = X)
INPUT
OUTPUT
MODE
VPO
VMO
D+
0
D-
1
0
0
0
0
1
0
1
RCV
VPI
0
VMI
1
RESULT
LOGIC 0
SE0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
LOGIC 1
SE0
0
0
0
0
0
0
SE0
0
0
1
LOGIC 0
LOGIC 1
UNꢁEFINEꢁ
1
1
0
1
1
1
*Timing specifications are not guaranteed for D+ and D-.
Table 3d. Truth Table Receive in Suspend* (SUSP = 1, OE = 1, MODE = X, VPO/VMO = X,
ENUM = X)
INPUT
OUTPUT
VPI
0
VMI
0
D+
0
D-
0
RCV
RESULT
0
0
0
0
ꢀPI/ꢀMI ACTIꢀE
ꢀPI/ꢀMI ACTIꢀE
ꢀPI/ꢀMI ACTIꢀE
ꢀPI/ꢀMI ACTIꢀE
0
1
0
1
1
0
1
0
1
1
1
1
*Timing specifications are not guaranteed for D+ and D-.
10 ______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
IEC 1000-4-2
Applications Information
The IEC 1000-4-2 standard covers ESꢁ testing and per-
External Components
formance of finished equipment; it does not specifically
refer to integrated circuits. The MAX3344E/MAX3345E
help the user design equipment that meets level 4 of IEC
1000-4-2, without the need for additional ESꢁ-protection
components.
External Resistors
Two external 23.7Ω 1% to 27.4Ω 1%, 1/2W resistors
are required for USB connection. Place the resistors
in between the MAX3344E/MAX3345E and the USB
connector on the ꢁ+ and ꢁ- lines (see the Typical
Operating Circuit).
The major difference between tests done using the
Human Body Model and IEC 1000-4-2 is a higher peak
current in IEC 1000-4-2, because series resistance is
lower in the IEC 1000-4-2 model. Hence, the ESꢁ with-
stand voltage measured to IEC 1000-4-2 is generally
lower than that measured using the Human Body Model.
Figure 1c shows the IEC 1000-4-2 model.
External Capacitors
Use three external capacitors for proper operation. Use
a 0.1µF ceramic for decoupling ꢀ , a 1µF ceramic for
L
decoupling ꢀ , and a 1.0µF (min) ceramic or plastic
CC
filter capacitor on ꢀTRM. Return all capacitors to GNꢁ.
The Air-Gap ꢁischarge Method involves approaching
the device with a charged probe. The Contact
ꢁischarge Method connects the probe to the device
before the probe is energized.
UCꢁ- Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit board
techniques, bump-pad layout, and recommended reflow
temperature profile, as well as the latest information on
reliability testing results, refer to the Application Note
UCSP—A Wafer-Level Chip-Scale Package available on
Maxim’s website at www.maxim-ic.com/ucsp.
Machine Model
The Machine Model for ESꢁ tests all pins using a 200pF
storage capacitor and zero discharge resistance. Its
objective is to emulate the stress caused by contact that
occurs with handling and assembly during manufactur-
ing. All pins require this protection during manufactur-
ing. Therefore, after PC board assembly, the Machine
Model is less relevant to I/O ports.
Chip Information
TRANSISTOR COUNT: 2162
PROCESS: BiCMOS
______________________________________________________________________________________ 11
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
3V
D+
D-
0V
t
t
PLH(RCV)
PHL(RCV)
V
L
RCV
V /2
L
0V
t
t
t
PLH(SE)
PHL(SE)
VPI
V
L
V /2
L
0V
t
PLH(SE)
PHL(SE)
VMI
V
L
V /2
L
0V
D+/D- RISE/FALL TIMES ≤ 8ns, V = 1.65V, 2.5V, 3.3V
L
Figure 5. D+/D- to RCV, VPI, VMI Propagation Delays
TEST POINT
3.3V
23.7Ω
D+
TEST POINT
25pF
MAX3344E
MAX3345E
VMI OR VPI OR RCV
1.5kΩ
C = 50pF
L
15kΩ
MAX3344E
MAX3345E
TEST POINT
(a) LOAD FOR VPI, VMI, AND RCV
23.7Ω
D-
C = 50pF
L
15kΩ
TEST POINT
MAX3344E
23.7Ω
200Ω
MAX3345E
USB_DET
D+ OR D-
+
-
GND
OR V
25pF
50pF
CC
(b) LOAD FOR D+, D-, AND USB_DET
(c) LOAD FOR ENABLE AND DISABLE TIME, D+/D-
Figure 6. Test Circuits
12 ______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
Functional Diagram
USB SUPPLY
V
CC
Vbg
LINEAR
REGULATOR
BANDGAP
V
L
VTRM
TO INTERNAL CIRCUITS
MAX3344E
MAX3345E
ENUM
RCV
GND
RECEIVER
1.5kΩ
SUSP
23.7Ω
23.7Ω
TRANSMITTER
D-
VMO
MODE
VPO
D+
OE
EXTERNAL RESISTORS
USB_DET
TO INTERNAL CIRCUITS
VMI
VPI
Vbg
SINGLE-ENDED RECEIVERS
-in Configurations
1
2
3
4
TOP VIEW
BOTTOM VIEW
RCV
1
2
3
4
5
6
7
8
16 USB_DET
MAX3344E/MAX3345E
VPO
MODE
VMO
OE
15
14
13
12
11
10
9
V
L
D
VPO
RCV
V
L
VTRM
VTRM
D+
C
B
VMO MODE USB_DET D+
MAX3344E
MAX3345E
D-
OE
SUSP ENUM
D-
SUSP
VPI
GND
A
V
CC
VPI
VMI
V
CC
GND
VMI
ENUM
UCSP
TSSOP
______________________________________________________________________________________ 13
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
-acꢀage Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 4x4 UCSP
1
21-0101
H
1
14 ______________________________________________________________________________________
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers
in UCꢁ- with UꢁB Detect
-acꢀage Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated -roducts, ±20 ꢁan Gabriel Drive, ꢁunnyvale, CA 94086 408ꢂ737ꢂ7600 ____________________ 15
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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