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TUSB2551A Datasheet, PDF (1/20 Pages) Texas Instruments – ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER
TUSB2551A
www.ti.com...................................................................................................................................................................................................... SCES790 – JUNE 2009
ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVER
FEATURES
1
• Complies With Universal Serial Bus
Specification Rev. 2.0 (USB 2.0)
• Transmits and Receives Serial Data at Both
Full-Speed (12-Mbit/s) and Low-Speed
(1.5-Mbit/s) Data Rates
• Integrated Bypassable 5-V to 3.3-V Voltage
Regulator for Powering Via USB VBUS
• Low-Power Operation is Ideal for Portable
Equipment
• Meets the IEC-61000-4-2 Contact Discharge
(±9 kV) and Air-Gap Discharge (±9 kV) ESD
Ratings
• Separate I/O Supply With Operation Down to
1.65 V
• Very-Low Power Consumption to Meet USB
Suspend Current Requirements
• No Power-Supply Sequencing Requirements
APPLICATIONS
• Cellular Phones
• Personal Digital Assistants (PDAs)
• Handheld Computers
VCC(I/O)
SPEED
RCV
VP
VM
SOFTCON
GND
PW PACKAGE
(TOP VIEW)
1
14
2
13
3
12
4
11
5
10
6
9
7
8
VCC(5.0)
VPU(3.3)
Vreg(3.3)
D+
D–
OE
SUSPEND
RGT PACKAGE
(BOTTOM VIEW)
5678
VM 4
VP 3
RCV 2
SPEED 1
9 OE
GND
(Exposed die pad)
10 D–
11 D+
12 Vreg(3.3)
16 15 14 13
NC – No internal connection
DESCRIPTION/ORDERING INFORMATION
The TUSB2551A is a single-chip transceiver that complies with the physical-layer specifications of universal
serial bus (USB) 2.0. The device supports both full-speed (12-Mbit/s) and low-speed (1.5-Mbit/s) operation. The
TUSB2551A delivers superior edge-rate control, producing crisper eye diagrams, which ease the task of passing
USB compliance testing.
A dual supply-voltage operation allows the TUSB2551A to reference the system interface I/O signals to a supply
voltage down to 1.6 V, while independently powered by the USB VCC(5.0). This allows the system interface to
operate at its core voltage without the addition of buffering logic, and also reduce system operating current.
1
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.
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information 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.
Copyright © 2009, Texas Instruments Incorporated
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