USB1T20MTCX - Fairchild Semiconductor

October 2008

USB1T20 • Rev. 1.0.2

USB1T20 — Universal Serial Bus Transceiver

USB1T20 — Universal Serial Bus Tran sceiver

Features

 Complies with Universal Serial Bus Specification

2.0 for FS/LS Applications

 Utilizes Digital Inputs and Outputs to Transmit and

Receive USB Cable Data

 Supports 12Mbit/s Full Speed (FS) and 1.5Mbit/s

Low Speed (LS) Serial Data Transmission

 Supports Single-ended and Differential Data

Interface as Function of MODE

 Single 3.3V Supply

 ESD Performance: Human Body Model

- 9.5kV on D-, D+ Pins Only

- 4.0kV on All Other Pins

Description

USB1T20 is a generic USB 2.0 compliant transceiver.

Using a single voltage supply, the USB1T20 provides

an ideal USB interface solution for any electronic device

able to supply 3.0V to 3.6V. It is designed to allow 5.0V

or 3.3V programmable and standard logic to interface

with the physical layer of the Universal Serial Bus

(USB). It is capable of transmitting and receiving serial

data at both full speed (12Mbit/s) and low speed

(1.5Mbit/s) data rates.

Packaged in industry-standard TSSOP package. The

USB1T20 is ideal for mobile electronics and other

space-constrained applications.

Ordering Information

Part Number Operating

Temperature

Range

Eco

Status Package Packing

Method

USB1T20MTC -40° to +85°C RoHS 14-Lead Thin Shrink Small Outline Package

(TSSOP) JEDEC MO-153, 4.4mm Wi de Tube

USB1T20MTCX -40° to +85°C RoHS 14-Lead Thin Shrink Small Outline Package

(TSSOP) JEDEC MO-153, 4.4mm Wi de Tape and

Reel

For Fairchild’s defini t i on of “green” Eco St atus, pleas e visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

/OE

SPEED

V

MO

/F

SE0

V

PO

D-

D+

RCV +

-

V

P

V

M

Figure 1. Logic Diagram

USB1T20 • Rev. 1.0.2 2

USB1T20 — Universal Serial Bus Transceiver

Pin Configuration

MODE

/OE

RCV

V

P

V

M

SUSPND

GND

V

CC

V

MO

/F

SEO

V

PO

D+

D-

SPEED

NC

14

13

12

11

10

9

8

1

2

3

4

5

6

7

Figure 2. Pin Configuration (Top View)

Pin Definitions

Pin # Name I/O Description

1 MODE I

Mode. When left unconnected, a weak pull-up t ransistor pulls mode pin t o VCC and, in

this GND, the VMO/FSEO pin takes the function of FSEO (force SEO).

2 /OE I

Output Enable. Acti ve LOW; enables the transceiver to transmit dat a on the bus.

When not active, the trans ceiver i s in receive mode.

3 RCV O

Receive Data. CMOS-Level output for USB differential input.

Gated version of D- and D+. Outputs are logic “0” and logi c “1.” Used to detect single

ended zero (/SEO), error conditions, and inter connected speed. (I nput to SIE) .

VP V

M RESULT

0 0

/SEO

0 1 Low Speed

1 0 Full Speed

4, 5 VP,VM O

0 1 Error

6 SUSPND I

Suspend. Enables a low-power state while the USB bus is inact ive. While the

suspend pin is ac tive, i t drives the RCV pin to a logic “0” state. Both D+ and D- are 3-

state.

7 GND Ground reference.

8 NC No connect.

9 SPEED I

Edge Rate Contr ol. Logic “1” operat es at edge rates for full speed. Logic “0” operates

edge rates for low speed.

10, 11 D-, D+ AI/ O Data+, Dat a-. Differential data bus c onforming to the Univers al Serial Bus standard.

Inputs to differential driver. (Output s from SIE.)

Mode VPO V

MO/FSEO RESULT

0 0 Logic “0”

0 1 /SEO

1 0 Logic “1”

0

1 1 /SEO

0 0 /SEO

0 1 Logic “0”

1 0 Logic “1”

12, 13 VPO,VMO/FSEO I

1

1 1 Illegal Code

14 VCC 3.0 to 3. 6 power supply.

USB1T20 • Rev. 1.0.2 3

USB1T20 — Universal Serial Bus Transceiver

Functional Truth Table

Input I/O Outputs

Mode VPO V

MO/FSEO /OE SUSPND D+ D- RCV VP V

M Result

0 0 0 0 0 0 1 0 0 1 Logic “0”

0 0 1 0 0 0 0

Undefined

State 0 0 /SEO

0 1 0 0 0 1 0 1 1 0 Logic “1”

0 1 1 0 0 0 0

Undefined

State 0 0 /SEO

1 0 0 0 0 0 0

Undefined

State 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

Undefined

State Undefined

State Illegal

Code

Don’t

Care Don’t

Care Don’t Care 1 0 3-State 3-State Undefined

State Undefined

State D+/D-

Hi-Z

Don’t

Care Don’t

Care Don’t Care 1 1 3-State 3-State Undefined

State Undefined

State D+/D-

Hi-Z

USB1T20 • Rev. 1.0.2 4

USB1T20 — Universal Serial Bus Transceiver

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be

operable above the recommended operating conditions and stressing the parts to these levels is not recommended.

In addition, extended exposure to stresses above the recommended operating conditions may affect device

reliability. The absolute maximum ratings are stress ratings only.

Symbol Parameter Min. Max. Unit

VCC DC Supply Voltage -0.5 7.0 V

IIK DC Input Diode Current, VIN<0V -50 mA

VIN Input Voltage(1) -0.5 5.5 V

VI/O Input / Output Voltage -0.5 VCC + 0.5 V

IOK Output Diode Current, VO>VCC or VO<0 ±50 mA

VO Output Voltage(1) -0.5 VCC + 0.5 V

VP, VM, RCV Pins ±15

IO Output Source or Sink Current

(VO = 0 to VCC) D+/D- Pins ±50 mA

ICC / IGND V

CC / GND Current ±100 mA

TSTG Storage Temperature Range -60 +150 °C

Note:

1. The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are

observed.

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended

operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not

recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol Parameter Min. Max. Unit

VCC Supply Voltage 3.0 3.6 V

VIN Input Voltage 0 5.5 V

VAI/O Input Range for AI/0 0 VCC V

VO Output Voltage 0 VCC V

TA Operating Ambient Temperature, Free Air -40 +85 °C

USB1T20 • Rev. 1.0.2 5

USB1T20 — Universal Serial Bus Transceiver

DC Electrical Characteristics Digital Pins

Over the recommended range of supply voltage and operating free air temperature unless otherwise noted. VCC =

3.0V to 3.6V.

TA = -40 to +85°C

Symbol Parameter Conditions

Min. Typ. Max.

Units

Input Levels

VIL Low-Level Input Voltage 0.8 V

VIH High-Level Input Voltage 2 V

Output Levels IOL = 4mA 0.4

VOL Low-Level Output Voltage IOL = 20µA 0.1 V

IOH = 4mA 2.4

VOH High-Level Output Voltage IOH = 20µA VCC-0.1 V

Leakage Current

IIN Input Leakage Current VCC = 3.0 to 3.6V ±5 µA

ICCFS Supply Current, Full Speed VCC = 3.0 to 3.6V 5 mA

ICCLS Supply Current, Low Speed VCC = 3.0 to 3.6V 5 mA

ICCQ Quiescent Supply Current VCC = 3.0 to 3.6V,

VIN = VCC or GND 5 mA

ICCS Supply Current in Suspend VCC = 3.0 to 3.6V,

Mode = VCC 10 µA

DC Electrical Characteristics D+/D- Pins

Over the recommended range of supply voltage and operating free air temperature unless otherwise noted. VCC =

3.0V to 3.6V.

TA=-40 to +85°C

Symbol Parameter Conditions

Min. Typ. Max.

Units

Input Levels

VDI Differential Input Sensitivity ⎪(D+) – (D-)⎪ 0.2 V

VCM Differential Common-Mode Range Includes VDI Range 0.8 2.5 V

VSE Single-Ended Receiver Threshold 0.8 2.0 V

Output Levels

VOL Static Output Low-Voltage RL of 1.5kΩ to 3.6V 0.3 V

VOH Static Output High-Voltage RL of 1.5kΩ to GND 2.8 3.6 V

VCR Differential Crossover 1.3 2.0 V

Leakage Current

IOZ High Z-State Data Line Leakage

Current 0V<VIN<3.3V ±5 µA

Capacitance Transceiver Capacitance(2) Pin to GND 10 pF

CIN Capacitance Match(2) 10 %

Output Resistance

Driver Output Resistance(3) Steady-State Drive 4 20

Ω

ZDRV Resistance Match(3) 10 %

Notes:

2. This specification is guaranteed by design and statistical process distribution.

3. Excludes external resistor. To comply with USB specification 1.1, external series resistors of 24 Ω ±1% each on

D+ and D- are recommended.

USB1T20 • Rev. 1.0.2 6

USB1T20 — Universal Serial Bus Transceiver

AC Electrical Characteristics D+/D- Pins, Full Speed

Over the recommended range of supply voltage and operating free air temperature unless otherwise noted.

VCC = 3.0V to 3.6V; CL = 50pF; RL = 1.5kΩ on D+ to VCC.

TA=-40 to +85°C

Symbol Parameter Conditions

Min. Typ. Max.

Units

Driver Characteristics

tR, tF Rise and Fall Time 10 and 90%, Figure 3 4 20 ns

tRFM Rise/Fall Time Matching tr / tf 90 110 %

VCRS Output Signal Crossover Voltage 1.3 2.0 V

Driver Timings

tPLH Driver Propagation Delay

(VPO,VMO/FSEO to D+D-) Figure 4 18 ns

tPHZ, tPLZ Driver Disable Delay (/OE to D+/D-) Figure 6 13 ns

tPZH, tPZL Driver Enable Delay (/OE to D+/D-) Figure 6 17 ns

Receiver Timings

tPLH 16 ns

tPHL Receiver Propagation Delay

D+/D- to RVC Figure 5 19 ns

tPLH, tPHL Single-ended Receiver Delay

(D+,D- to VP, VM) Figure 5 8 ns

AC Electrical Characteristics D+/D- Pins, Low Speed

Over the recommended range of supply voltage and operating free air temperature unless otherwise noted.

VCC = 3.0V to 3.6V; CL = 200pF to 600pF; RL = 1.5kΩ on D- to VCC.

TA=-40 to +85°C

Symbol Parameter Conditions

Min. Typ. Max.

Units

Driver Characteristics

tLR, tLF Rise and Fall Time 10 and 90%, Figure 3 75 300 ns

tRFM Rise/Fall Time Matching tr / tf 80 120 %

VCRS Output Signal Crossover Voltage 1.3 2.0 V

Driver Timings

tPLH, tPHL Driver Propagation Delay

(VPO,VMO/FSEO to D+D-) Figure 4 300 ns

tPHZ, tPLZ Driver Disable Delay (/OE to D+/D-) Figure 6 13 ns

tPZH, tPZL Driver Enable Delay (/OE to D+/D-) Figure 6 205 ns

Receiver Timings

tPLH, tPHL Receiver Propagation Delay

(D+/D- to RVC) Figure 5 18 ns

tPLH, tPHL Single-ended Receiver Delay

(D+,D- to VP, VM) Figure 5 28 ns

USB1T20 • Rev. 1.0.2 7

USB1T20 — Universal Serial Bus Transceiver

AC Loadings and Wa veforms

VOL and VOH are the typical output voltage drops that occur with the output load. VCC never goes below 3.0V.

Figure 3. Rise and Fall Times Figure 4. VPO, VMO/FSEO to D+/D-

Figure 5. D+/D- to RCV, VP/VM Figure 6. /OE to D+/D-

Test Circuits and Waveforms

Figure 7. Load for VM/VP and RCV Figure 8. Load for Enable and Disable Times

CL=50pF, Full Speed

CL=200pF, Low Speed (Minimum Timing)

CL=600pF, Low Speed (Maximum Timing)

1.5kΩ on D- (Low Speed) or D+ (Full Speed) only

Test S1

D-/LS Close

D+/LS Open

D-/FS Open

D+/FS Close

Figure 9. Load for D+/D-

USB1T20 • Rev. 1.0.2 8

USB1T20 — Universal Serial Bus Transceiver

Physical Dimensions

C. DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH,

AND TIE BAR EXTRUSIONS

F. DRAWING FILE NAME: MTC14REV6

R0.09 min

12.00°TOP & BOTTOM

0.43 TYP

1.00

D. DIMENSIONING AND TOLERANCES PER ANSI

Y14.5M, 1982

R0.09min

E. LANDPATTERN STANDARD: SOP65P640X110-14M

0.65

6.10

1.65

0.45

A. CONFORMS TO JEDEC REGISTRATION MO-153,

VARIATION AB, REF NOTE 6

B. DIMENSIONS ARE IN MILLIMETERS

Figure 10. 14-Lead Thin Shrink Small Outline Package (TSSOP) JEDEC MO-153, 4.4mm Wide

Pack age drawings are provided as a service to customers consideri ng Fai rchild components . Drawings may c hange i n any manner

without notice. P l ease note the revi sion and/or date on t he drawing and contac t a Fairchild S emiconductor represent ative to v er ify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’ s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’ s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

USB1T20 • Rev. 1.0.2 9

USB1T20 — Universal Serial Bus Transceiver