Revised January 2005 USB1T20 Universal Serial Bus Transceiver General Description Features 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. ■ Complies with Universal Serial Bus specification 2.0 for FS/LS applications 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. ■ 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 ■ Supports single-ended and differential data interface as function of MODE ■ Single 3.3V supply ■ ESD Performance: Human Body Model > 9.5 kV on D−, D+ pins only > 4 kV on all other pins ■ Space saving 14-terminal MLP package Ordering Code: Order Number Package Number USB1T20MPX (Preliminary) MLP14D USB1T20MTC (Note 1) 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) © 2005 Fairchild Semiconductor Corporation DS500894 www.fairchildsemi.com USB1T20 Universal Serial Bus Transceiver September 2004 USB1T20 Terminal and Pin Descriptions Terminal or Pin Number Terminal or Pin Name MLP14D MTC14 I/O Description RCV 13 3 O Receive data. CMOS level output for USB differential input OE 12 2 I Output Enable. Active LOW, enables the transceiver to transmit data on the bus. When not active the transceiver is in receive mode. MODE 11 1 I 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). Vpo, 8, 9 12, 13 I Inputs to differential driver. (Outputs from SIE). Vmo / FSEO MODE Vpo Vmo/FSEO RESULT 0 0 0 Logic “0” 1 Vp, Vm 14, 1 4, 5 O 0 1 SE0 1 0 Logic “1” 1 1 SE0 0 0 SE0 0 1 Logic “0” 1 0 Logic “1” 1 1 Illegal code 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). Vm Vp RESULT 0 0 SE0 0 1 Low Speed 1 0 Full Speed 1 1 Error D +, D− 7, 6 11, 10 AI/O Data+, Data−. Differential data bus conforming to the Universal Serial Bus standard. SUSPND 2 6 I 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. SPEED 5 9 I Edge rate control. Logic “1” operates at edge rates for “full speed”. Logic “0” operates edge rates for “low speed”. VCC 10 14 — GND 3 7 — NC 4 8 3.0V to 3.6V power supply Ground reference No Connect Functional Truth Table Input I/O Outputs Mode Vpo Vmo/FSEO OE SUSPND D+ D− RCV Vp Vm Result 0 0 0 0 0 0 1 0 0 1 Logic 0 0 0 1 0 0 0 0 U 0 0 SE0 0 1 0 0 0 1 0 1 1 0 Logic 1 0 1 1 0 0 0 0 U 0 0 SE0 1 0 0 0 0 0 0 U 0 0 SE0 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 X X X 1 0 Z Z U U U D+/D− Hi-Z X X X 1 1 Z Z U U U D+/D− Hi-Z X = Don’t Care Z = 3-STATE www.fairchildsemi.com U = Undefined State 2 DC Supply Voltage (VCC) Recommended Operating Conditions −0.5V to +7.0V DC Input Diode Current (IIK) VI < 0 Input Voltage (VI) −0.5V to +5.5V (Note 3) −0.5V to VCC + 0.5V Input Voltage (VI/O) Input Voltage (VI) 0V to 5.5V Input Range for AI/O (VAI/O) 0V to VCC Output Voltage (VO) 0V to VCC Operating Ambient Temperature Output Diode Current (IOK) VO > VCC or VO < 0 3.0V to 3.6V Supply Voltage VCC −50 mA −40°C to +85°C in Free Air (TAMB) ±50 mA Output Voltage (VO) −0.5V to VCC + 0.5V (Note 3) Output Source or Sink Current (IO) Vp.Vm, RCV Pins VO = 0V to VCC ±15 mA Output Source or Sink Current (IO) 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. D+/D− Pins VO = 0V to VCC ±50 mA VCC or GND Current (ICC , IGND) Storage Temperature (TSTO) ±100 mA −60°C to + 150°C Note 3: The input and output voltage ratings may be exceeded if the input and output clamp current ratings are observed. 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 Parameter Test Conditions Temperature = −40°C to +85°C Min Typ Unit Max Input Levels VIL LOW Level Input Voltage VIH HIGH Level Input Voltage 0.8 2.0 V V Output Levels VOL VOH LOW Level Output Voltage HIGH Level Output Voltage IOL = 4 mA 0.4 IOL = 20 µA 0.1 IOH = 4 mA 2.4 IOH = 20 µA VCC – 0.1 V V Leakage Current IL Input Leakage Current VCC = 3.0 to 3.6 ±5 µA ICCFS Supply Current (Full Speed) VCC = 3.0 to 3.6 5 mA ICCLS Supply Current (Low Speed) VCC = 3.0 to 3.6 5 mA ICCQ Quiescent Current VCC = 3.0 to 3.6 5 mA 10 µA VIN = VCC or GND ICCS Supply Current in Suspend VCC = 3.0 to 3.6; Mode = VCC 3 www.fairchildsemi.com USB1T20 Absolute Maximum Ratings(Note 2) USB1T20 DC Electrical Characteristics (D+/D− Pins) Over recommended range of supply voltage and operating free air temperature (unless otherwise noted). VCC = 3.0V to 3.6V Limits Symbol Parameter Test Conditions Temperature = −40°C to +85°C Min Typ Units Max Input Levels VDI Differential Input Sensitivity |(D+) – (D−)| 0.2 VCM Differential Common Mode Range Includes VDI Range 0.8 2.5 V V VSE Single Ended Receiver Threshold 0.8 2.0 V 0.3 V 2.8 3.6 V 1.3 2.0 V High Z State Data Line Leakage Current 0V < VIN < 3.3V ±5 µA CIN Transceiver Capacitance 10 pF (Note 5) Capacitance Match 10 % Output Levels VOL Static Output LOW Voltage RL of 1.5 kΩ to 3.6V VOH Static Output HIGH Voltage RL of 15 kΩ to GND VCR Differential Crossover Leakage Current IOZ Capacitance Pin-to-GND Output Resistance ZDRV Driver Output Resistance (Note 4) Resistance Match Steady State Drive 4 20 Ω 10 % Note 4: Excludes external resistor. In order to comply with USB Specification 1.1, external series resistors of 24Ω ± 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 kΩ on D+ to VCC Limits Symbol Parameter Test Condition Temperature = −40°C to +85°C Min Typ Units Max Driver Characteristics 10% and 90% tR Rise Time Figure 1 4 20 tF Fall Time Figure 1 4 20 tRFM Rise/Fall Time Matching (tR/tF) 90 110 % VCRS Output Signal Crossover Voltage 1.3 2.0 V ns Driver Timings tPLH Driver Propagation Delay Figure 2 18 ns tPLH (Vpo, Vmo/FSEO to D+/D−) Figure 2 18 ns tPHZ Driver Disable Delay Figure 4 13 ns tPLZ (OE to D+/D−) Figure 4 13 ns tPZH Driver Enable Delay Figure 4 17 ns tPZL (OE to D+/D−) Figure 4 17 ns Receiver Timings tPLH Receiver Propagation Delay Figure 3 16 ns tPHL (D+, D− to RCV) Figure 3 19 ns tPLH Single-ended Receiver Delay Figure 3 8 ns tPHL (D+, D− to Vp, Vm) Figure 3 8 ns www.fairchildsemi.com 4 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 = 1.5kΩ on D− to VCC Limits Symbol Parameter TAMB = −40°C to +85°C Test Conditions Min Typ Unit Max Driver Characteristics 10% and 90% tLR Rise Time Figure 1 75 300 tLF Fall Time Figure 1 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 Driver Propagation Delay Figure 2 300 ns tPHL (Vpo, Vmo/FSEO to D+/D−) Figure 2 300 ns tPHZ Driver Disable Delay Figure 4 13 ns tPLZ (OE to D+/D−) Figure 4 13 ns tPZH Driver Enable Delay Figure 4 205 ns tPZL (OE to D+/D−) Figure 4 205 ns Receiver Timings tPLH Receiver Propagation Delay Figure 3 18 ns tPHL (D+, D− to RCV) Figure 3 18 ns tPLH Single-ended Receiver Delay Figure 3 28 ns tPHL (D+, D− to Vp, Vm) Figure 3 28 ns 5 www.fairchildsemi.com 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 2. Vpi, Vmo/FSEO to D+/D− FIGURE 1. Rise and Fall Times FIGURE 3. D+/D− to RCV, Vp/Vm FIGURE 4. OE to D+/D− Test Circuits and Waveforms Load for Vm/Vp and RCV Load for Enable and Disable Times Note: V = 0 for tPZH, tPHZ V = VCC for tPZL, tPLZ Load for D+/D− Test CL = 50 pF, Full Speed www.fairchildsemi.com S1 D−/LS Close CL = 200 pF, Low Speed (Minimum Timing) D+/LS Open CL = 600 pF, Low Speed (Maximum Timing) D−/FS Open 1.5 kΩ on D− (Low Speed) or D+ (Full Speed) only D+/FS Close 6 Tape Format for MLP Package Designator MPX Tape Number Cavity Section Cavities Status Cover Tape Status Leader (Start End) 125 (typ) Empty Sealed Carrier 2500 Filled Sealed Trailer (Hub End) 75 (typ) Empty Sealed TAPE DIMENSIONS inches (millimeters) REEL DIMENSIONS inches (millimeters) Tape Size A (mm) N (Typical) (mm) W1 (mm) W2 (Max) (mm) 12 mm 330 178 12.4 18.4 7 www.fairchildsemi.com USB1T20 Tape and Reel Specification USB1T20 Physical Dimensions inches (millimeters) unless otherwise noted 14-Terminal Molded Leadless Package (MLP), 2.5mm Square Package Number MLP14D www.fairchildsemi.com 8 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: 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. 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. www.fairchildsemi.com 9 www.fairchildsemi.com