19-2843; Rev 1; 11/03
15ꢀk EꢁDꢂ-rotected UꢁB Transceivers
General Description
Features
The MAX3450E/MAX3451E/MAX3452E USB-compliant
transceivers interface low-voltage ASICs with USB
devices. The devices fully comply with USB 1.1 and
USB 2.0 when operating at full (12Mbps) and low
(1.5Mbps) speeds. The MAX3450E/MAX3451E/
ꢀ
15kV ESD Protection on D+ and D-
ꢀ Combined VP and VM Inputs/Outputs
ꢀ +1.65V to +3.6V V Logic Supply Input for
L
Interfacing with Low-Voltage ASICs
MAX3452E operate with V as low as +1.65V, ensuring
L
ꢀ Enumerate Input Function (MAX3451E)
compatibility with low-voltage ASICs.
The MAX3450E/MAX3451E/MAX3452E feature a logic-
selectable suspend mode that reduces current con-
sumption to less than 40µA. Integrated 15kV ESD
protection protects the USB D+ and D- bidirectional
bus connections. The MAX3450E is pin compatible with
Micrel’s MIC2550A. The MAX3451E features an internal
1.5kΩ USB pullup resistor and an enumeration function
that allows devices to logically disconnect while
plugged in. The MAX3452E provides a push-pull bus-
ꢀ Powered from Li+ Battery as Low as +3.1V
(MAX3450E and MAX3451E)
ꢀ V
Detection (MAX3452E)
BUS
ꢀ Pin Compatible with Micrel MIC2550A (MAX3450E)
ꢀ Internal D+ or D- Pullup Resistor (MAX3451E)
ꢀ No Power-Supply Sequencing Required
detect (BD) output that asserts high when V
greater than +4.0V.
is
BUS
The MAX3450E/MAX3451E/MAX3452E operate over the
-40°C to +85°C extended temperature range and are
available in 14-pin TSSOP and 3mm x 3mm 16-pin thin
QFN packages.
Ordering Information
PART
TEMP RANGE
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
PIN-PACKAGE
14 TSSOP
Applications
MAX3450EEUD
MAX3450EETE
MAX3451EEUD
MAX3451EETE
MAX3452EEUD
MAX3452EETE
PDAs
16 Thin QFN
14 TSSOP
PC Peripherals
Cellular Telephones
Data Cradles
MP3 Players
16 Thin QFN
14 TSSOP
16 Thin QFN
Typical Operating Circuit appears at end of data sheet.
-in Configurations
TOP VIEW
16
15
14
13
1
2
3
4
5
6
7
14
13
12
11
10
9
V
V
BUS
L
N.C. *(ENUM) **(BD)
SPD
RCV
VP
SPD
RCV
VP
V
TRM
1
2
3
4
12
11
10
9
V
TRM
MAX3450E
MAX3451E
MAX3452E
D+
D-
OE
D+
MAX3450E
MAX3451E
MAX3452E
VM
D-
***EXPOSED PADDLE
VM
N.C.
GND
OE
8
SUS
5
6
7
8
TSSOP
*MAX3451E ONLY
**MAX3452E ONLY
***CONNECT EXPOSED PADDLE TO GND OR LEAVE FLOATING
3mm x 3mm
THIN QFN
________________________________________________________________ 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.