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USB1T20 Universal Serial Bus Transceiver
September 2004 Revised January 2005
USB1T20 Universal Serial Bus Transceiver
General Description
The 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. 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 and Fairchild's ultra-small 2.5mm x 2.5mm MLP package, the USB1T20 is ideal for ultra-portable electronics and other space constrained applications.
Features
s Complies with Universal Serial Bus specification 2.0 for FS/LS applications s Utilizes digital inputs and outputs to transmit and receive USB cable data s Supports 12Mbit/s "Full Speed" and 1.5Mbit/s "Low Speed" serial data transmission s Supports single-ended and differential data interface as function of MODE s Single 3.3V supply s ESD Performance: Human Body Model > 9.5 kV on D-, D+ pins only > 4 kV on all other pins s Space saving 14-terminal MLP package
Ordering Code:
Order Number USB1T20MPX (Preliminary) USB1T20MTC (Note 1) Package Number MLP14D MTC14 Package Description 14-Terminal Molded Leadless Package (MLP), 2.5mm Square 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Note 1: Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code.
Logic Diagram
Connection Diagrams
Terminal Assignments for MLP (Preliminary)
(Top View) Pin Assignments for TSSOP
(Top View) (c) 2005 Fairchild Semiconductor Corporation DS500894 www.fairchildsemi.com
USB1T20
Terminal and Pin Descriptions
Terminal or Pin Number Terminal or Pin Name MLP14D MTC14 RCV OE MODE 13 12 11 3 2 1 I/O O I I Description Receive data. CMOS level output for USB differential input Output Enable. Active LOW, enables the transceiver to transmit data on the bus. When not active the transceiver is in receive mode. Mode. When left unconnected, a weak pull-up transistor pulls it to VCC and in this GND, the Vmo/FSEO pin takes the function of FSEO (Force SEO). Inputs to differential driver. (Outputs from SIE). MODE 0 Vpo 0 0 1 1 1 0 0 1 1 Vp, Vm 14, 1 4, 5 O Vmo/FSEO 0 1 0 1 0 1 0 1 RESULT Logic "0" SE0 Logic "1" SE0 SE0 Logic "0" Logic "1" Illegal code
Vpo, Vmo / FSEO
8, 9
12, 13
I
Gated version of D- and D+. Outputs are logic "0" and logic "1". Used to detect single ended zero (SE0), error conditions, and interconnect speed. (Input to SIE). Vp 0 0 1 1 Vm 0 1 0 1 RESULT SE0 Low Speed Full Speed Error
D+, D- SUSPND
7, 6 2
11, 10 6
AI/O I
Data+, Data-. Differential data bus conforming to the Universal Serial Bus standard. Suspend. Enables a low power state while the USB bus is inactive. While the SUSPND pin is active it will drive the RCV pin to a logic "0" state. Both D+ and D- are 3-STATE. Edge rate control. Logic "1" operates at edge rates for "full speed". Logic "0" operates edge rates for "low speed". 3.0V to 3.6V power supply Ground reference No Connect
SPEED VCC GND NC
5 10 3 4
9 14 7 8
I -- --
Functional Truth Table
Input Mode 0 0 0 0 1 1 1 1 X X
X = Don't Care
I/O OE 0 0 0 0 0 0 0 0 1 1 SUSPND 0 0 0 0 0 0 0 0 0 1 D+ 0 0 1 0 0 0 1 1 Z Z D- 1 0 0 0 0 1 0 1 Z Z RCV 0 U 1 U U 0 1 U U U
Outputs Vp 0 0 1 0 0 0 1 U U U Vm 1 0 0 0 0 1 0 U U U Result Logic 0 SE0 Logic 1 SE0 SE0 Logic 0 Logic 1 Illegal Code D+/D- Hi-Z D+/D- Hi-Z
Vpo 0 0 1 1 0 0 1 1 X X
Vmo/FSEO 0 1 0 1 0 1 0 1 X X
Z = 3-STATE
U = Undefined State
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USB1T20
Absolute Maximum Ratings(Note 2)
DC Supply Voltage (VCC) DC Input Diode Current (IIK) VI < 0 Input Voltage (VI) (Note 3) Input Voltage (VI/O) Output Diode Current (IOK) VO > VCC or VO < 0 Output Voltage (VO) (Note 3) Output Source or Sink Current (IO) Vp.Vm, RCV Pins VO = 0V to VCC Output Source or Sink Current (IO) D+/D- Pins VO = 0V to VCC VCC or GND Current (ICC , IGND) Storage Temperature (TSTO)
-0.5V to +7.0V -50 mA -0.5V to +5.5V -0.5V to VCC + 0.5V 50 mA -0.5V to VCC + 0.5V
Recommended Operating Conditions
Supply Voltage VCC Input Voltage (VI) Input Range for AI/O (VAI/O) Output Voltage (VO) Operating Ambient Temperature in Free Air (TAMB) 3.0V to 3.6V 0V to 5.5V 0V to VCC 0V to VCC
-40C to +85C
15 mA
Note 2: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristic tables are not guaranteed at the absolute maximum rating. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 3: The input and output voltage ratings may be exceeded if the input and output clamp current ratings are observed.
50 mA 100 mA -60C to + 150C
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 Limits Symbol Input Levels VIL VIH VOL VOH LOW Level Input Voltage HIGH Level Input Voltage LOW Level Output Voltage HIGH Level Output Voltage IOL = 4 mA IOL = 20 A IOH = 4 mA IOH = 20 A Leakage Current IL ICCFS ICCLS ICCQ ICCS Input Leakage Current Supply Current (Full Speed) Supply Current (Low Speed) Quiescent Current Supply Current in Suspend VCC = 3.0 to 3.6 VCC = 3.0 to 3.6 VCC = 3.0 to 3.6 VCC = 3.0 to 3.6 VIN = VCC or GND VCC = 3.0 to 3.6; Mode = VCC 5 5 5 5 10 A mA mA mA A 2.4 VCC - 0.1 2.0 0.4 0.1 0.8 V V Parameter Test Conditions Temperature = -40C to +85C Min Typ Max Unit
Output Levels V V
3
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USB1T20
DC Electrical Characteristics
Symbol Input Levels VDI VCM VSE Output Levels VOL VOH VCR IOZ Capacitance CIN (Note 5) ZDRV (Note 4) Transceiver Capacitance Capacitance Match Driver Output Resistance Resistance Match Static Output LOW Voltage Static Output HIGH Voltage Differential Crossover Differential Input Sensitivity Differential Common Mode Range Single Ended Receiver Threshold Parameter
(D+/D- Pins)
Limits Test Conditions Temperature = -40C to +85C Min Typ Max V 2.5 2.0 0.3 2.8 1.3 3.6 2.0 5 10 10 V V V V V A pF % % Units
Over recommended range of supply voltage and operating free air temperature (unless otherwise noted). VCC = 3.0V to 3.6V
|(D+) - (D-)| Includes VDI Range
0.2 0.8 0.8
RL of 1.5 k to 3.6V RL of 15 k to GND
Leakage Current High Z State Data Line Leakage Current 0V < VIN < 3.3V Pin-to-GND
Output Resistance Steady State Drive 4 20 10
Note 4: Excludes external resistor. In order to comply with USB Specification 1.1, external series resistors of 24 1% each on D+ and D- are recommended. This specification is guaranteed by design and statistical process distribution. Note 5: This specification is guaranteed by design and statistical process distribution.
AC Electrical Characteristics (D+/D- Pins, Full Speed)
Over recommended range of supply voltage and operating free air temperature (unless otherwise noted). VCC = 3.0V to 3.6V; CL = 50 pF; RL = 1.5 k on D+ to VCC Limits Symbol Driver Characteristics 10% and 90% tR tF tRFM VCRS tPLH tPLH tPHZ tPLZ tPZH tPZL tPLH tPHL tPLH tPHL Rise Time Fall Time Rise/Fall Time Matching Output Signal Crossover Voltage Driver Propagation Delay (Vpo, Vmo/FSEO to D+/D-) Driver Disable Delay (OE to D+/D-) Driver Enable Delay (OE to D+/D-) Receiver Propagation Delay (D+, D- to RCV) Single-ended Receiver Delay (D+, D- to Vp, Vm) Figure 2 Figure 2 Figure 4 Figure 4 Figure 4 Figure 4 Figure 3 Figure 3 Figure 3 Figure 3 Figure 1 Figure 1 (tR/tF) 4 4 90 1.3 20 20 110 2.0 18 18 13 13 17 17 16 19 8 8 % V ns ns ns ns ns ns ns ns ns ns ns Parameter Test Condition Temperature = -40C to +85C Min Typ Max Units
Driver Timings
Receiver Timings
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USB1T20
AC Electrical Characteristics (D+/D- Pins, Low Speed)
Over recommended range of supply voltage and operating free air temperature (unless otherwise noted). VCC = 3.0V to 3.6V; CL = 200 pF to 600 pF; RL = 1.5k on D- to VCC Limits Symbol Driver Characteristics 10% and 90% tLR tLF tRFM VCRS tPLH tPHL tPHZ tPLZ tPZH tPZL tPLH tPHL tPLH tPHL Rise Time Fall Time Rise/Fall Time Matching Output Signal Crossover Voltage Driver Propagation Delay (Vpo, Vmo/FSEO to D+/D-) Driver Disable Delay (OE to D+/D-) Driver Enable Delay (OE to D+/D-) Receiver Propagation Delay (D+, D- to RCV) Single-ended Receiver Delay (D+, D- to Vp, Vm) Figure 2 Figure 2 Figure 4 Figure 4 Figure 4 Figure 4 Figure 3 Figure 3 Figure 3 Figure 3 Figure 1 Figure 1 (tR/tF) 75 75 80 1.3 300 300 120 2.0 300 300 13 13 205 205 18 18 28 28 % V ns ns ns ns ns ns ns ns ns ns ns Parameter Test Conditions Min TAMB = -40C to +85C Typ Max Unit
Driver Timings
Receiver Timings
5
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USB1T20
AC Waveforms
VOL and VOH are the typical output voltage drops that occur with the output load. (VCC never goes below 3.0V)
FIGURE 1. Rise and Fall Times
FIGURE 2. Vpi, Vmo/FSEO to D+/D-
FIGURE 3. D+/D- to RCV, Vp/Vm
FIGURE 4. OE to D+/D-
Test Circuits and Waveforms
Load for Vm/Vp and RCV
Note:
Load for Enable and Disable Times
V = 0 for tPZH, tPHZ V = VCC for tPZL, tPLZ
Load for D+/D- Test CL = 50 pF, Full Speed CL = 200 pF, Low Speed (Minimum Timing) CL = 600 pF, Low Speed (Maximum Timing) 1.5 k on D- (Low Speed) or D+ (Full Speed) only S1
D-/LS Close D+/LS Open D-/FS Open D+/FS Close
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USB1T20
Tape and Reel Specification
Tape Format for MLP Package Designator MPX Tape Section Leader (Start End) Carrier Trailer (Hub End) TAPE DIMENSIONS inches (millimeters) Number Cavities 125 (typ) 2500 75 (typ) Cavity Status Empty Filled Empty Cover Tape Status Sealed Sealed Sealed
REEL DIMENSIONS inches (millimeters)
Tape Size 12 mm
A (mm) 330
N (Typical) (mm) 178
W1 (mm) 12.4
W2 (Max) (mm) 18.4
7
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USB1T20
Physical Dimensions inches (millimeters) unless otherwise noted
14-Terminal Molded Leadless Package (MLP), 2.5mm Square Package Number MLP14D
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USB1T20 Universal Serial Bus Transceiver
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC14
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 9 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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