Fairchild USB1T11A service manual

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USB1T11A
Universal Serial Bus Transceiver

USB1T11A Universal Serial Bus Transceiver

November 1999
Revised March 2005

General Description

The USB1T11A is a one chip generic USB transceiver. It is
designed to allow 5.0V o r 3.3V programmable and stan­dard logic to interfac e with the physical layer of the Univer­sal Serial Bus. It is capable of transmitting an d receiving
serial data at both full speed (12Mbit/s) and low speed
(1.5Mbit/s) data rates.

The input and output signals of the USB1T11A conform
with the “Seria l Interface Engine”. Implementati on of the
Serial Interface Engine along with the USB1T11A allows
the designer to make US B com pati ble de vices w ith off-th e­shelf logic and easily modify and update the application.

Features

■ Complies with Universal Serial Bus specification 1.1

■ Utilizes digital inputs and outputs to transmit and receive

USB cable data

■ Supports 12Mbit/s “Full Speed” and 1.5Mbit/s

“Low Speed” serial data transmission

■ Compatible with the VHDL “Serial Interface Engine”

from USB Implementers' Forum

■ Supports single-ended data interface

■ Single 3. 3V supply

■ ESD Performance: Human Body Model

!

9.5 kV on D, D pins only

!

4 kV on all other pins

■ 16-lead Pb-Free MLP package saves space

Ordering Code:

Order Number

USB1T11AM
(Note 1)

USB1T11AM_NL
(Note 2)

USB1T11ABQX MLP16C Pb-Free 16-Terminal Molded Leadless Package (MLP), JEDEC MO-220, 3mm square
USB1T11AMTC

(Note 1)
USB1T11AMTC_NL

(Note 2)
USB1T11AMTCX_NL

(Note 2)

Pb-Free package per JEDEC J-STD-020B.

Note 1: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Note 2: “_NL” indicates Pb-Fre e pac k age (per JEDEC J-ST D-020B). Please us e order number as indi c at ed.

Package

Number

M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

M14A Pb-Free 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

MTC14 Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

Wide

MTC14 Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

Wide

Package Description

The USB-IF Logos ar e trademarks of Unive rs al Serial Bus Implem enters Forum, Inc.

© 2005 Fairchild Semiconductor Corporation DS500234 www.fairchildsemi.com

Connection Diagrams

Pin Assignments for SOIC and TSSOP

Logic Diagram

USB1T11A

Pin Assignments for MLP

Pin Descriptions

Pin Name I/O Description

RCV O Receive data. CMOS level output for US B differen tial input

OE

MODE I Mode. When left unconnected, a weak pull-up transistor pulls it to V

, VMO/F

V

PO

, V

V

P

M



, D



D

SUSPND I Suspend. Enables a low power state while the USB bus is inactive. While the suspend pin is

SPEED I Edge rate control. Logic “1” operates at edge rates for “full speed”.

V

CC

GND Ground reference

I Output Enable. Active LOW, enables the transceiver to transmit data on the bus. When not

active the transceiver is in receive mode.

and in this GND, the

VMO/FSEO pin takes the function of FSEO (Force SEO).

I Inputs to differential driver. (Outputs from SIE).

SEO

O Gated versi on of D and D. Outputs are logic “0” and logic “1”. Used to detect single ended

AI/O Data, Data. Differential data bus conforming to the Universal Serial Bus standard.

MODE VPO VMO/FSEO RESULT

0 0 0 Logic “0”

0 1 SE0
1 0 Logic “1”
11 SEO

1 0 0 SE0

0 1 Logic “0”
1 0 Logic “1”
1 1 Illegal code

zero (SE0

active it will drive the RCV pin to a logic “0” state. Both D

Logic “0” operates edge rates for “low speed”.

3.0V to 3.6V power supply

), error conditions, and interconnect speed. (Input to SIE).

VP VM RESULT

0 0 SE0
01Low Speed
1 0 Full Speed
11Error



CC

and D are 3-STATE.

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Functional Truth Table

Input I/O Outputs

Mode VPO VMO/FSEO OE

SUSPND D



D



RCV

V

0 0 0 0 0 0 1 0 0 1 Logic 0
0 0 1 0 0 0 0 U 0 0 SEO

0 1 0 0 0 1 0 1 1 0 Logic 1
0 1 1 0 0 0 0 U 0 0 SEO
1 0 0 0 0 0 0 U 0 0 SEO

1 0 1 0 0 0 1 0 0 1 Logic 0
1 1 0 0 0 1 0 1 1 0 Logic 1
1 1 1 0 0 1 1 U U U Illegal Code
XX X 10ZZUUUD
XX X 11ZZUUUD

X Don’t Care
Z

3-STATE

Undefined State

U

V

P

M

Result

/D
/D

USB1T11A

Hi-Z
Hi-Z

3 www.fairchildsemi.com

Absolute Maximum Ratings(Note 3) Recommended Operating

DC Supply Voltage (VCC)
DC Input Diode Current (I

V

 0

USB1T11A

I

Input Voltage (V

)

I

(Note 4)

Input Voltage (V

)

I/O

Output Diode Current (I

! VCC or VO  0

V

O

Output Voltage (V

O

(Note 4)

Output Source or Sink Current (I

VP.VM, RCV pins

0 to V

V

O

CC

Output Source or Sink Current (I

D

/D

pins

0 to V

V

O

V

CC

CC

or GND Current (ICC, I

Storage Temperature (T



0.5V to 7.0V

)

OK

IK



0.5V to VCC  0.5V

)



50 mA



0.5V to 5.5V

r

50 mA

)



0.5V to VCC  0.5V

)

O

r

15 mA

)

O

r

50 mA

STO

GND

)

)

60q

C to  150qC

r

100 mA

Conditions

Supply Voltage V
Input Voltage (V
Input Range for AI/O (V
Output Voltage (VO) 0V to V
Operating Ambient Temperature

in free air (T

Note 3: The Absolute Maximum Ratings are those values beyond which
the safety of the d evice cannot be guaranteed. The device sh ould not be
operated at these limi ts. The parametric values define d in the Electrical
Characteristic tables are not gua ranteed at the absolute ma ximum rating .
The “Recomme nded O peratin g Cond itions ” table w ill def ine th e cond itions
for actual device operation.

Note 4: The input and o utp ut vol tage r ati ngs ma y be ex ceed ed if th e inpu t
and output clamp c urrent ratings are observ ed.

CC

)0V to 5.5V

I

amb

) 0V to V

AI/O

)

DC Electrical Characteristics (Digital Pins)

Over recommended range of supply voltage and operating free air temperature (unless otherwise noted). VCC 3.0V to 3.6V

Symbol Parameter Test Conditions

Min Typ Max

CC

V
V

V

V

I

L

I

CCFS

I

CCLS

I

CCQ

I

CCS

INPUT LEVELS:

IL
IH

OL

OH

LOW Level Input Voltage 0.8 V
HIGH Level Input Voltage 2.0 V
OUTPUT LEVELS:
LOW Level Output Voltage IOL 4 mA 0.4

HIGH Level Output Voltage IOH 4 mA 2.4

LEAKAGE CURRENT:
Input Leakage Current VCC 3.0 to 3.6
Supply Current (Full Speed) VCC 3.0 to 3.6 5 mA
Supply Current (Low Speed) VCC 3.0 to 3.6 5 mA
Quiescent Current VCC 3.0 to 3.6

Supply Current in Suspend VCC 3.0 to 3.6; Mode V

IOL 20 PA0.1

20 PAV

I

OH

VIN VCC or GND

CC

Limits

– 0.1

3.0V to 3.6V

CC
CC

40q

C to 85qC

UnitTemp 40qC to 85qC

V

V

r

5

P

A

5mA

10

P

A

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