MAX3450E_08 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – ±15kV ESD-Protected USB Transceivers

19-2843; Rev 2; 10/08
±15kV ESD-Protected USB Transceivers
General Description
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/
MAX3452E operate with V_L as low as +1.65V, ensuring
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-
detect (BD) output that asserts high when V_BUS is
greater than +4.0V.
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.
Applications
PDAs
PC Peripherals
Cellular Telephones
Data Cradles
MP3 Players
Typical Operating Circuit appears at end of data sheet.
Features
♦ ±15kV ESD Protection on D+ and D-
♦ Combined VP and VM Inputs/Outputs
♦ +1.65V to +3.6V V_L Logic Supply Input for
Interfacing with Low-Voltage ASICs
♦ Enumerate Input Function (MAX3451E)
♦ Powered from Li+ Battery as Low as +3.1V
(MAX3450E and MAX3451E)
♦ V_BUS Detection (MAX3452E)
♦ Pin Compatible with Micrel MIC2550A (MAX3450E)
♦ Internal D+ or D- Pullup Resistor (MAX3451E)
♦ No Power-Supply Sequencing Required
Ordering Information
PART
PIN-PACKAGE
TOP MARK
MAX3450EEUD+
MAX3450EETE+
MAX3451EEUD+
MAX3451EETE+
MAX3452EEUD+
MAX3452EETE+
14 TSSOP
16 Thin QFN-EP^†
14 TSSOP
16 Thin QFN-EP^†
14 TSSOP
16 Thin QFN-EP^†
—
AAJ
—
AAK
—
AAL
Note: All devices are specified over the -40°C to +85°C operat-
ing temperature range.
+Denotes lead(Pb)-free package/RoHS-compliant package.
†_{EP = Exposed pad.}
Pin Configurations
TOP VIEW
V_L 1 ⁺
SPD 2
RCV ³
VP 4
VM 5
MAX3450E
MAX3451E
MAX3452E
N.C. 6
GND 7
14 V_BUS
13 N.C. *(ENUM) **(BD)
12 V_TRM
11 D+
10 D-
9 OE
8 SUS
TSSOP
*MAX3451E ONLY
**MAX3452E ONLY
***CONNECT EXPOSED PADDLE TO GND OR LEAVE UNCONNECTED
+ ^{16 15 14 13}
SPD 1
RCV 2
VP 3
VM 4
MAX3450E
MAX3451E
MAX3452E
***EXPOSED PAD
12 VTRM
11 D+
10 D-
9 OE
5
6
7
8
3mm x 3mm
THIN QFN-EP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.