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PDF MAX3346E Data sheet ( Hoja de datos )
| Número de pieza | MAX3346E | |
| Descripción | +-15kV ESD-Protected USB Transceiver | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-3172; Rev 0; 2/04
www.DataSheet4U.com
±15kV ESD-Protected USB Transceiver
in UCSP
General Description
The MAX3346E bidirectional transceiver converts logic-
level signals to USB signals, and USB signals to logic-
level signals. The MAX3346E includes the 1.5kΩ USB
pullup resistor internally, and supports both full-speed
(12Mbps) and low-speed (1.5Mbps) USB operation.
The device has built-in ±15kV ESD protection circuitry
to guard the USB I/O pins, D+ and D-.
The MAX3346E operates with VL voltages as low as
1.65V, ensuring compatibility with low-voltage ASICs.
The device features a logic-selectable suspend mode
that lowers current draw to less than 40µA. The
MAX3346E has an enumerate function that allows
devices to logically disconnect while plugged in. The
MAX3346E is fully compliant with USB specification 1.1,
and the full-speed and low-speed operation under USB
specification 2.0.
The MAX3346E is available in the miniature 4 x 4 chip-
scale package (UCSPTM), as well as the small 14-pin
TSSOP, and is rated for the -40°C to +85°C extended
temperature range.
Applications
Cell Phones
PC Peripherals
Data Cradles
PDAs
MP3 Players
Features
♦ ±15kV ESD Protection on D+ and D-
♦ Internal Linear Regulator Allows Direct Powering
from the USB Cable
♦ Internal 1.5kΩ Pullup Resistor for Low/Full-Speed
Operation
♦ Supports Low-Speed and Full-Speed USB
Communications
♦ Complies with USB Specification Revision 1.1 and
2.0 (Low Speed and Full Speed)
♦ Three-State Outputs
♦ Enumerate Input—Allows USB Connection
through Software
♦ No Power-Supply Sequencing Required
♦ Operates with VL of 1.65V to 3.6V, Ensuring
Compatibility with Low-Voltage ASICs
♦ Available in Miniature Chip-Scale Package
PART
MAX3346EEUD
MAX3346EEBE-T
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 TSSOP
4 x 4 UCSP
UCSP is trademark of Maxim Integrated Products, Inc.
Pin Configurations
TOP VIEW
RCV 1
VP 2
MODE 3
VM 4
OE 5
ENUM 6
SUSP 7
MAX3346E
TSSOP
BOTTOM VIEW
14 VL
13 VTRM
12 D+
11 D-
10 GND
9 VCC
8 SPEED
D
C
B
A
1234
MAX3346E
VP RCV VL VTRM
VM MODE
D+
OE SUSP
D-
ENUM SPEED VCC GND
UCSP
________________________________________________________________ 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.
1 page  
www.DataSheet4U.com
±15kV ESD-Protected USB Transceiver
in UCSP
Typical Operating Characteristics
(VCC = +5V, VL =+3.3V, TA = +25°C, unless otherwise noted.)
SINGLE-ENDED RECEIVER
PROPAGATION DELAY vs. VL
15
TA = +85°C
14
SINGLE-ENDED RECEIVER
PROPAGATION DELAY vs. VCC
15
14 TA = +85°C
SKEW vs. VCC
(MODE 0, FULL SPEED)
2.0
1.8
13
12
11 TA = +25°C
10
9
TA = -40°C
8
13
12
11 TA = +25°C
10
9
TA = -40°C
8
1.6
TA = -40°C
1.4
1.2
1.0
0.8 TA = +25°C
TA = +85°C
0.6
7
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
VL (V)
7
4.00 4.25 4.50 4.75 5.00 5.25 5.50
VCC (V)
0.4
4.00 4.25 4.50 4.75 5.00 5.25 5.50
VCC (V)
SKEW VS. VCC
(MODE 0, LOW SPEED)
1.0
OE, VP, VM TIMING
MAX3346E toc05
0.9
0.8
0.7
TA = +85°C
0.6 TA = +25°C
0.5
A
0
B
0.4
0.3
TA = -40°C
0.2
0.1
0
4.00 4.25 4.50 4.75 5.00 5.25 5.50
VCC (V)
OE, VP, VM TIMING
MAX3346E toc06
0
C
0
(FIGURE 4a)
200ns/div
A: VP, 2V/div
B: VM, 2V/div
C: OE, 5V/div
VTRM vs. VCC
3.5
A
0
B
0
C
0
A: VP, 2V/div
B: VM, 2V/div
C: OE, 5V/div
(FIGURE 4a)
200ns/div
3.4
3.3
3.2
3.1
IVTRM = 15mA
3.0
4.00 4.25 4.50 4.75 5.00 5.25 5.50
VCC (V)
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
±15kV ESD-Protected USB Transceiver
in UCSP
Table 3a. Truth Table, Transmit (MODE = 0)
OE = 0 (TRANSMIT)
INPUT
VP
0
0
1
1
VM
0
1
0
1
OUTPUT
RESULT
D+ D- RCV
0 1 0 Logic 0
0
0
RCV*
SE0
1 0 1 Logic 1
0 0 X SE0
*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, Transmit (MODE = 1)
OE = 0 (TRANSMIT)
INPUT
VP VM
00
OUTPUT
RESULT
D+ D- RCV
0
0
RCV*
SE0
0 1 0 1 0 Logic 0
1 0 1 0 1 Logic 1
1 1 1 1 X Undefined
*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, Receive
OE = 1 (RECEIVE)
INPUT
D+
0
0
1
1
D-
0
1
0
1
OUTPUT
RESULT
VP VM RCV
0
0
RCV*
SE0
0 1 0 Logic 0
1 0 1 Logic 1
1 1 X Undefined
*RCV denotes the signal level on output RCV just before SE0 state occurs. This level is stable during the SE0 period.
Table 3d. Function Select
SUSP
0
0
0
0
1
1
ENUMERATE
0
0
1
1
0
1
OE
0
1
0
1
0 or 1
0 or 1
D+/D-
Driving
High-Z
Driving
High-Z
High-Z
High-Z
RCV
Active
Active
Active
Active
0
0
VP/VM
High-Z
Active
High-Z
Active
Active
Active
FUNCTION
Normal driving
Normal receiving, RPULLUP disconnected
Normal driving
Normal receiving, RPULLUP connected
Suspend mode, RPULLUP disconnected
Suspend mode, RPULLUP connected
______________________________________________________________________________________ 11
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| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet MAX3346E.PDF ] | |
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