19-3171; Rev 0; 2/04 ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect The MAX3344E/MAX3345E USB transceivers convert logic-level signals to USB signals, and USB signals to logic-level signals. An internal 1.5kΩ USB pullup resistor supports full-speed (12Mbps) USB operation. The MAX3344E/MAX3345E provide built-in ±15kV ESD-protection circuitry on the USB I/O pins, D+ and D-, and VCC. The MAX3344E/MAX3345E operate with logic supply voltages as low as 1.65V, ensuring compatibility with low-voltage ASICs. The suspend mode lowers supply current to less than 40µA. An enumerate function allows devices to logically disconnect while plugged in. The MAX3344E/MAX3345E are fully compliant with USB specification 1.1, and full-speed operation under USB specification 2.0. The MAX3344E/MAX3345E have a USB detect that monitors the USB bus for insertion and signals this event. The MAX3344E USB_DET threshold is between 3.6V (min) and 4V (max), while the MAX3345E USB_DET threshold is between 1V (min) and 2.8V (max). The MAX3344E/MAX3345E are available in the miniature 4 ✕ 4 UCSP™, as well as the small 16-pin TSSOP, and are specified over the extended temperature range, -40°C to +85°C. Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ±15kV ESD Protection On D+ and DComply with USB Specification 1.1 (Full Speed 2.0) Separate VP and VM Inputs/Outputs VL Down to 1.65V Allows Connection with LowVoltage ASICs Enumerate Input—Allows USB Connection through Software USB Detect Function 3.6V (min) to 4V (max)—MAX3344E 1V (min) to 2.8V (max)—MAX3345E Allow Single-Ended or Differential Logic I/O Internal Linear Regulator Allows Direct Powering from the USB Internal Pullup Resistor for Full-Speed Operation Three-State Outputs No Power-Supply Sequencing Required Driver Active in Suspend Mode Available in Miniature Chip-Scale Package Ordering Information Applications Cell Phones PC Peripherals Information Appliances Data Cradles PDAs MP3 Players Digital Cameras PART TEMP RANGE PIN-PACKAGE MAX3344EEUE -40°C to +85°C 16 TSSOP MAX3344EEBE-T -40°C to +85°C 4 x 4 UCSP MAX3345EEUE -40°C to +85°C 16 TSSOP MAX3345EEBE-T -40°C to +85°C 4 x 4 UCSP Pin Configurations appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. Typical Operating Circuit 1µF SYSTEM SUPPLY VOLTAGE 0.1µF SYSTEM INTERFACE VL RCV MAX3344E/ MAX3345E VPI VMI SUSP OE USB_DET MODE ENUM VPO VMO GND VCC VBUS 23.7Ω D+ 23.7Ω D- D+ DGND VTRM 1µF USB INTERFACE CONNECTOR ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX3344E/MAX3345E General Description MAX3344E/MAX3345E ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect ABSOLUTE MAXIMUM RATINGS Maximum Continuous Current (all other pins) ..................±15mA Continuous Power Dissipation (TA = +70°C) 16-Pin TSSOP (derate 9.4mW/°C above +70°C)...754mW (U16-2) 4 ✕ 4 UCSP (derate 8.2mW/°C above +70°C) ...659mW (B16-1) Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Bump Temperature (soldering) Reflow............................+235°C (All voltages refer to GND, unless otherwise noted.) Supply Voltage (VCC) ...............................................-0.3V to +6V Output of Internal Regulator (VTRM) ..........-0.3V to (VCC + 0.3V) Input Voltage (D+, D-) ..............................................-0.3V to +6V System Supply Voltage (VL) .....................................-0.3V to +6V RCV, SUSP, VMO, MODE, VPO, OE, VMI, VPI, USB_DET, ENUM...............................-0.3V to (VL + 0.3V) Short-Circuit Current (D+, D-) to VCC or GND (Note 1) .........................................................Continuous Note 1: External 23.7Ω resistors connected to D+ and D-. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = 4V to 5.5V bypassed with 1µF to GND, GND = 0, VL = 1.65V to 3.6V, ENUM = VL, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V, VL = 2.5V, TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 3.0 3.3 3.6 V SUPPLY INPUTS (VCC, VTRM, VL) Regulated Supply Voltage Output VCC Input Range VL Input Range Operating VCC Supply Current Operating VL Supply Current VVTRM Internal regulator VCC 4.0 5.5 V VL 1.65 3.60 V IVCC Full-speed transmitting/receiving at 12Mbps, CL = 50pF on D+ and D- 10 mA IVL Full-speed transmitting/receiving at 12Mbps 8 mA Full-speed idle: VD+ > 2.7V, VD- < 0.3V 340 450 SE0: VD+ < 0.3V, VD- < 0.3V 390 500 Full-Speed Idle and SE0 Supply Current IVCC(IDLE) Static VL Supply Current IVL(STATIC) Full-speed idle, SE0, or suspend mode Suspend Supply Current IVCC(SUSP) IVCC(DIS) Disable-Mode Supply Current D+/D- Disable-Mode Load Current ID_(DIS) µA 12.5 µA SUSP = OE = high 40 µA VL = GND or open 20 µA VL = GND or open, VD_ = 0 or +5.5V 5 µA Sharing-Mode VL Supply Current IVL(SHARING) VCC = GND or open, OE = low, SUSP = high 20 µA D+/D- Sharing-Mode Load Current ID_(SHARING) VCC = GND or open, VD_ = 0 or +5.5V 20 µA Input High Voltage VIH SUSP, MODE, ENUM, OE, VMO, VPO Input Low Voltage VIL SUSP, MODE, ENUM, OE, VMO, VPO VPI, VMI, RCV, USB_DET; ISOURCE = 2mA VPI, VMI, RCV, USB_DET; ISINK = -2mA LOGIC-SIDE I/O 2 Output-Voltage High VOH Output-Voltage Low VOL 2/3 x VL V 0.4 VL - 0.4 _______________________________________________________________________________________ V V 0.4 V ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect (VCC = 4V to 5.5V bypassed with 1µF to GND, GND = 0, VL = 1.65V to 3.6V, ENUM = VL, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V, VL = 2.5V, TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP SUSP, MODE, ENUM, OE, VMO, VPO = 0 or VL Input Leakage Current MAX UNITS ±1 µA 0.3 V 3.6 V USB-SIDE I/O Output-Voltage Low VOL RL = 1.5kΩ from D+ or D- to 3.6V Output-Voltage High VOH RL = 15kΩ from D+ and D- to GND Input Impedance ZIN Three-state driver, ENUM = 0, VD_ = 0 or +3.6V Single-Ended Input-Voltage High VIH Single-Ended Input-Voltage Low VIL 2.8 1 MΩ 2.0 V 0.8 V Receiver Single-Ended Hysteresis VHYS Differential Input Sensitivity VDIFF 200 Input Common-Mode Voltage Range VCM 0.8 2.5 V Driver Output Impedance ROUT 4.6 16.0 Ω 1.540 kΩ Internal Pullup Resistor USB_DET Threshold USB_DET Hysteresis 200 RPU 1.410 VUSBLH1 MAX3344E VUSBHL1 MAX3344E VUSBLH2 MAX3345E VUSBHL2 MAX3345E VUSBHYS MAX3344E mV mV 1.500 4.0 3.6 2.8 V 1 25 mV LINEAR REGULATOR External Capacitor COUT Compensation of linear regulator 1 µF ESD PROTECTION (VCC, D+, D-) Human Body Model ±15 IEC1000-4-2 Air-Gap Discharge ±10 kV IEC1000-4-2 Contact Discharge ±8 kV kV TIMING CHARACTERISTICS (VCC = 4V to 5.5V, GND = 0, VL = 1.65V to 3.6V, ENUM = VL, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V, VL = 2.5V, TA = +25°C.) (Figures 2–6) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TRANSMITTER OE to Transmit Delay Enable Time tPZD Figures 2 and 6c 20 ns OE to Driver Three-State Delay Driver Disable Time tPDZ Figures 2 and 6c 20 ns VPO/VMO to D+/D- Propagation Delay tPLH1(drv) MODE = high, Figures 4 and 6b 10 18 tPHL1(drv) MODE = high, Figures 4 and 6b 10 18 VPO/VMO D+/D- Propagation Delay tPLH0(drv) MODE = low, Figures 3 and 6c 11 20 tPHL0(drv) MODE = low, Figures 3 and 6c 11 20 ns ns _______________________________________________________________________________________ 3 MAX3344E/MAX3345E ELECTRICAL CHARACTERISTICS (continued) TIMING CHARACTERISTICS (continued) (VCC = 4V to 5.5V, GND = 0, VL = 1.65V to 3.6V, ENUM = VL, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V, VL = 2.5V, TA = +25°C.) (Figures 2–6) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Rise Time D+/D- tR1 CL = 50pF, 10% to 90% of |VOH - VOL| 4 20 ns Fall Time D+/D- tF1 CL = 50pF, 90% to 10% of |VOH - VOL| 4 20 ns Rise- and Fall-Time Matching tR1/tF1 (Note 3) 90 111 % Output Signal Crossover VCRS (Note 3) 1.3 2.0 V tPLH(RCV) 18 ns tPHL(RCV) SINGLE-ENDED RECEIVERS (Figures 5 and 6a) tPLH(SE) D+/D- to VPI or VMI Propagation Delay tPHL(SE) 18 ns 18 ns 18 ns DIFFERENTIAL RECEIVER (Figures 5 and 6a) D+/D- to RCV Propagation Delay Note 2: Parameters are 100% production tested at 25°C, limits over temperature are guaranteed by design. Note 3: Guaranteed by design, not production tested. Typical Operating Characteristics (VCC = 5V, VL = 3.3V, TA = +25°C, unless otherwise noted.) TA = +25°C 14 TA = -40°C 16 TA = +25°C 14 12 12 10 10 TA = -40°C 14 13 TA = +85°C 12 11 TA = +25°C 10 9 8 1.5 1.8 2.1 2.4 2.7 VL (V) 4 3.0 3.3 3.6 MAX3344E/45E toc03 TA = +85°C 18 15 PROPAGATION DELAY (ns) 16 MAX3344E/45E toc02 TA = +85°C 18 20 PROPAGATION DELAY (ns) MAX3344E/45E toc01 20 SINGLE-ENDED RECEIVER PROPAGATION DELAY vs. VL DIFFERENTIAL RECEIVER PROPAGATION DELAY vs. VCC DIFFERENTIAL RECEIVER PROPAGATION DELAY vs. VL PROPAGATION DELAY (ns) MAX3344E/MAX3345E ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect TA = -40°C 7 4.00 4.25 4.50 4.75 VCC (V) 5.00 5.25 5.50 1.5 1.8 2.1 2.4 2.7 VL (V) _______________________________________________________________________________________ 3.0 3.3 3.6 ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect SINGLE-ENDED RECEIVER PROPAGATION DELAY vs. VCC 11 TA = +25°C 10 9 8 TA = -40°C 1.6 1.4 1.2 1.0 TA = +25°C 7 4.25 4.50 4.75 5.00 5.25 5.50 4.25 4.50 28 27 26 5.00 5.25 1.5 5.50 1.8 2.1 2.4 2.7 3.0 3.3 VCC (V) VL (V) VTRM vs. VCC RISE- AND FALL-TIME MATCHING 3.6 MAX3344E/45E toc09 MAX3344E/45E toc08 3.4 VTRM (V) IVCC (µA) 29 4.75 3.5 MAX3344E/45E toc07 30 6 3 4.00 VCC CURRENT CONSUMPTION IN SUSPEND MODE 31 7 4 VCC (V) 32 8 TA = +85°C 0.4 4.00 9 5 0.8 0.6 TA = -40°C MAX3344E/45E toc06 1.8 IVL (µA) 12 10 MAX3344E/45E toc05 13 2.0 TRANSMITTER SKEW (ns) TA = +85°C 14 PROPAGATION DELAY (ns) MAX3344E/45E toc04 15 LOGIC CURRENT CONSUMPTION IN SUSPEND MODE TRANSMITTER SKEW vs. VCC f = 6MHz D+ 3.3 1V/div 3.2 D- 25 3.1 24 23 IVTRM = 15mA 3.0 22 4.00 4.25 4.50 4.75 5.00 5.25 4.00 5.50 4.25 4.50 4.75 5.00 5.25 VCC (V) VCC (V) SUSPEND RESPONSE TRANSMISSION IN SUSPEND MODE (SUSP = 1) MAX3344E/45E toc10 20ns/div 5.50 USB_DET RESPONSE MAX3344E/45E toc12 MAX3344E/45E toc11 VPO VCC SUSP 0 VMO 2V/div 2V/div 0 2V/div RCV D+ 0 D- 100ns/div USB_DET 0 2µs/div 10µs/div _______________________________________________________________________________________ 5 MAX3344E/MAX3345E Typical Operating Characteristics (continued) (VCC = 5V, VL = 3.3V, TA = +25°C, unless otherwise noted.) ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect MAX3344E/MAX3345E Pin Description PIN NAME INPUT/ OUTPUT FUNCTION D2 RCV Output Receiver Output. Single-ended CMOS output. RCV responds to the differential input on D+ and D-. D1 VPO Input Logic-Level Data Input. VPO is level translated to D+. Mode-Control Input. Selects differential (mode 1) or single-ended (mode 0) input for the system side when converting logic-level signals to USB level signals. Force MODE high to select mode 1. Force MODE low to select mode 0. TSSOP UCSP 1 2 3 C2 MODE Input 4 C1 VMO Input Logic-Level Data Input. VMO is level translated to D-. 5 B1 OE Input Output Enable. Drive OE low to enable data transmission on D+ and D-. Drive OE high to disable data transmission or to receive data. 6 B2 SUSP Input Suspend Input. Drive SUSP low for normal operation. Drive SUSP high for low-power state. In low-power state, RCV is low and VPI/VMI are active. 7 A1 VPI Output Logic-Level Data Output. VPI is the level-translated value of D+. 8 A2 VMI Output Logic-Level Data Output. VMI is the level-translated value of D-. 9 B3 ENUM Input Enumerate. Drive ENUM high to connect the internal 1.5kΩ resistor from D+ to 3.3V. Drive ENUM low to disconnect the internal 1.5kΩ resistor. 10 A3 VCC Power USB-Side Power-Supply Input. Connect VCC to the incoming USB power supply. Bypass VCC to GND with a 1µF ceramic capacitor. 11 A4 GND Power Ground 12 B4 D- Input/ Output Negative USB Differential Data Input/Output. Connect to the USB’s D- signal through a 23.7Ω ±1% resistor. 13 C4 D+ Input/ Output Positive USB Differential Data Input/Output. Connect to the USB’s D+ signal through a 23.7Ω ±1% resistor. 14 D4 VTRM Power Regulated Output Voltage. VTRM provides a 3.3V output derived from VCC. Bypass VTRM to GND with a 1µF (min) low-ESR capacitor, such as ceramic or plastic film types. 15 D3 VL Power System-Side Power-Supply Input. Connect to the system’s logic-level power supply, 1.65V to 3.6V. Output USB Detector Output. A high at USB_DET signals to the ASIC that VCC is present. A low at USB_DET indicates that VCC is not present. The MAX3344E USB_DET threshold is between 3.6V (min) and 4V (max), while the MAX3345E USB_DET threshold is between 1V (min) and 2.8V (max). 16 C3 USB_DET Detailed Description The MAX3344E/MAX3345E are bidirectional transceivers that convert single-ended or differential logic-level signals to differential USB signals, and convert differential USB signals to single-ended or differential logic-level signals. The MAX3344E/MAX3345E are operational from VCC = 5.5V to VCC = 3V (electrical specifications are not guaranteed for VCC < 4V). Both devices include an internal 1.5kΩ pullup resistor that connects and disconnects D+ to VTRM (see the Functional Diagram). The MAX3344E/MAX3345E are tolerant to power sequencing with either VCC > VL or VL > VCC. Additionally, 6 the USB I/O, D+ and D-, and VCC are ESD protected to ±15kV. The MAX3344E/MAX3345E can receive USB power (V CC) directly from the USB connection and operate with logic supplies (VL) down to 1.65V, while still meeting the USB physical layer specifications. The MAX3344E/MAX3345E support full-speed (12Mbps) USB specification 2.0 operation. The MAX3344E/MAX3345E have an enumerate feature that functions when power is applied. Driving ENUM low disconnects the internal 1.5kΩ pullup resistor from D+ enumerating the USB. This is useful if changes in communication protocol are required while power is applied, and while the USB cable is connected. _______________________________________________________________________________________ ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect Device Control Normal Operating Mode Connect VL and VCC to system power supplies (Table 1). Connect VL to a +1.65V to +3.6V supply. Connect V CC to a +4.0V to +5.5V supply. Alternatively, the MAX3344E/MAX3345E can derive power from a single Li+ battery. Connect the battery to VCC. VVTRM remains above +3.0V for VCC as low as +3.1V. Additionally, the MAX3344E/MAX3345E can derive power from a 3.3V ±10% voltage regulator. Connect VCC and VTRM to an external +3.3V voltage regulator. D+ and DD+ and D- are the USB-side transmitter I/O connections, and are ESD protected to ±15kV using the Human Body Model, ±10kV using IEC 1000-4-2 AirGap Discharge, and ±8kV using IEC 1000-4-2 Contact Discharge, making the MAX3344E/MAX3345E ideal for applications where a robust transmitter is required. A 23.7Ω resistor is required on D+ and D- for normal operation (see the External Resistors section). Disable Mode Connect VCC to a system power supply and leave VL unconnected or connect to GND. D+ and D- enter a tristate mode and VCC consumes less than 20µA of supply current. D+ and D- withstand external signals up to +5.5V in disable mode (Table 2). ENUM USB specification 2.0 requires a 1.5kΩ pullup resistor on D+ for full-speed (12Mbps) operation. Controlled by enumerate (ENUM), the MAX3344E/MAX3345E provide this internal 1.5kΩ resistor. Drive ENUM high to connect the pullup resistor from D+ to VTRM. Drive ENUM low to disconnect the pullup resistor from D+ to VTRM. Sharing Mode Connect VL to a system power supply and leave VCC (or VCC and VTRM) unconnected or connect to GND. D+ and D- enter a tri-state mode, allowing other circuitry to share the USB D+ and D- lines, and VL consumes less than 20µA of supply current. D+ and D- withstand external signals up to +5.5V in sharing mode (Table 2). VPO/VMO, VPI/VMI, and OE The MAX3344E/MAX3345E system-side inputs are VPO and VMO. Data comes into the MAX3344E/MAX3345E through VPO and VMO. VPO and VMO operate either differentially with VPO as the positive terminal and VMO as the negative terminal, or single ended with VPO as the data input (see the MODE section). Table 1. Power-Supply Configurations VCC (V) VTRM (V) VL (V) CONFIGURATION NOTES +4.0 to +5.5 +3.3 Output +1.65 to +3.6 Normal mode — +3.1 to +4.5 +3.3 Output +1.65 to +3.6 Battery supply — +3.0 to +3.6 +3.0 to +3.6 Input +1.65 to +3.6 Voltage regulator supply — GND or floating Output +1.65 to +3.6 Sharing mode Table 2 +3.0 to +5.5 Output GND or floating Disable mode Table 2 Table 2. Disable-Mode and Sharing-Mode Configurations INPUTS/OUTPUTS DISABLE MODE +5V input/+3.3V output +3.3V input/+3.3V input +3.7V input/+3.3V output SHARING MODE • • • Floating or connected to GND < +3.6V (MAX3344E) < +1.0V (MAX3345E) VCC/VTRM • • • VL Floating or connected to GND +1.65V to +3.6V input D+ and D- High impedance High impedance VPI and VMI Invalid* RCV Invalid* Undefined** SPEED, SUSP, OE, ENUM High impedance High impedance High impedance for OE = Low High for OE = High *High Impedance or low. **High or low. _______________________________________________________________________________________ 7 MAX3344E/MAX3345E Power-Supply Configurations MAX3344E/MAX3345E ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect The MAX3344E/MAX3345E system-side outputs are VPI, VMI, and RCV. The MAX3344E/MAX3345E send data through VPI, VMI, and RCV. VPI and VMI are outputs to the single-ended receivers and RCV is the output of the differential receiver. Output enable (OE) controls data transmission. Drive OE low to enable data transmission on D+ and D-. Drive OE high to disable data transmission or receive data. MODE MODE is a control input that selects whether differential or single-ended logic signals are recognized by the system side of the MAX3344E/MAX3345E. Drive MODE high to select differential mode with VPO as the positive terminal and VMO as the negative terminal. Drive MODE low to select single-ended mode with VPO as the data input (Table 3). VTRM VTRM is the 3.3V output of the internal linear voltage regulator. VTRM powers the internal circuitry of the USB side of the MAX3344E/MAX3345E. Connect a 1µF (min) low-ESR ceramic or plastic capacitor from VTRM to GND, as close to VTRM as possible. Do not use VTRM to power external circuitry. VCC Bypass VCC to GND with a 1µF ceramic capacitor as close to the device as possible. If VCC drops below the USB detect threshold, supply current drops below 20µA avoiding excessive VCC current consumption, and D+/D- enter a high-impedance state allowing other devices to drive the lines. USB Detect USB detect output (USB_DET) signals that VCC is present. A high at USB_DET indicates that VCC is present, while a low at USB_DET indicates that VCC is not present. The MAX3344E USB_DET threshold is between 3.6V (min) and 4V (max), while the MAX3345E USB_DET threshold is between 1V (min) and 2.8V (max). RC 1MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 100pF RD 1500Ω DISCHARGE RESISTANCE DEVICE UNDER TEST STORAGE CAPACITOR Figure 1a. Human Body ESD Test Models IP 100% 90% Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES 36.8% 10% 0 0 tRL TIME tDL CURRENT WAVEFORM Figure 1b. Human Body Model Current Waveform RC 50MΩ TO 100MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 150pF RD 330Ω DISCHARGE RESISTANCE STORAGE CAPACITOR DEVICE UNDER TEST SUSP Suspend (SUSP) is a control input. Force SUSP high to place the MAX3344E/MAX3345E in a low-power state. In this state, the quiescent supply current into VCC is less than 40µA and RCV goes low. In suspend mode, VPI and VMI remain active as receive outputs and VTRM stays on. The MAX3344E/ MAX3345E continue to receive data from the USB, allowing the µP to sense activity on the D+/D- lines and wake up the MAX3344E/MAX3345E. The MAX3344E/MAX3345E can also transmit data to D+ and D- while in suspend mode. This function is 8 Figure 1c. IEC 1000-4-2 ESD Test Model used to signal a remote wake-up by driving a signal on D+ and D- for a period of 1ms to 15ms. In suspend mode, data can only be transmitted with full-speed slope control. _______________________________________________________________________________________ ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect OE Receiving Data from the USB Data received from the USB are output to VPI/VMI in either of two ways, differentially or single ended. To receive data from the USB, force OE high and SUSP low. Differential data arriving at D+/D- appear as differential logic signals at VPI/VMI, and as a single-ended logic signal at RCV. If both D+ and D- are low, then VPI and VMI are low, signaling a single-ended zero condition on the bus; RCV remains in the last known state (Table 3). VL/2 0V tPDZ tPZD VOHD - 0.3V D+/DVOLD + 0.3V Transmitting Data to the USB The MAX3344E/MAX3345E output data to the USB differentially on D+ and D-. The logic driving signals can be either differential or single ended. For sending differential logic, force MODE high, force OE and SUSP low, and apply data to VPO and VMO. D+ then follows VPO, and D- follows VMO. To send single-ended logic signals, force MODE, SUSP, and OE low, and apply data to VPO/VMO. tPLHO To protect the MAX3344E/MAX3345E against ESD, D+ and D- have extra protection against static electricity to protect the device up to ±15kV. The ESD structures withstand high ESD in all states — normal operation, suspend, and powered down. For the 15kV ESD structures to work correctly, a 1µF or greater capacitor must be connected from VTRM to GND. Figure 2. Enable and Disable Timing, Transmitter VL VL/2 VPO ESD Protection 0V tPHLO VTRM D+ 0V D- ESD protection can be tested in various ways; the D+ and D- input/output pins are characterized for protection to the following limits: Figure 3. Mode 0 Timing VL VPO VL/2 1) ±15kV using the Human Body Model 2) ±8kV using the IEC 1000-4-2 Contact Discharge Method 3) ±10kV using the IEC 1000-4-2 Air-Gap Method 0V tPHL1 tPLH1 VL VL/2 VL/2 VMO 0V tPLH1 tPLH1 VTRM D+ 0V D- ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Human Body Model Figure 1a shows the Human Body Model, and Figure 1b shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the test device through a 1.5kΩ resistor. Figure 4. Mode 1 Timing _______________________________________________________________________________________ 9 MAX3344E/MAX3345E Data Transfer VL MAX3344E/MAX3345E ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect Table 3a. Truth Table Transmit (SUSP = 0, OE = 0, ENUM = X) INPUT OUTPUT MODE VPO VMO D+ D- RCV VPI VMI RESULT 0 0 0 0 1 0 0 1 LOGIC 0 0 0 1 0 0 RCV* 0 0 SE0 0 1 0 1 0 1 1 0 LOGIC 1 0 1 1 0 0 RCV* 0 0 SE0 1 0 0 0 0 RCV* 0 0 SE0 1 0 1 0 1 0 0 1 LOGIC 0 1 1 0 1 0 1 1 0 LOGIC 1 1 1 1 1 1 X 1 1 UNDEFINED *RCV denotes the signal level on output RCV just before SE0 state occurs. This level is stable during the SE0 period. Table 3b. Truth Table Receive (SUSP = 0, OE = 1, ENUM = X) INPUT OUTPUT D+ D- RCV VPI VMI RESULT 0 0 RCV* 0 0 SE0 0 1 0 0 1 LOGIC 0 1 0 1 1 0 LOGIC 1 1 1 X 1 1 UNDEFINED *RCV denotes the signal level on output RCV just before SE0 state occurs. This level is stable during the SE0 period. Table 3c. Truth Table Transmit in Suspend* (SUSP = 1, OE = 0, ENUM = X) INPUT OUTPUT MODE VPO VMO 0 0 0 0 0 1 0 1 0 0 1 1 0 1 D+ D- RCV VPI VMI RESULT 0 1 0 0 0 0 0 1 LOGIC 0 0 0 1 0 SE0 0 1 0 LOGIC 1 1 0 0 0 0 0 0 0 SE0 0 0 0 0 0 1 0 SE0 1 0 0 1 LOGIC 0 1 1 0 1 1 1 1 0 0 1 0 LOGIC 1 1 1 0 1 1 UNDEFINED *Timing specifications are not guaranteed for D+ and D-. Table 3d. Truth Table Receive in Suspend* (SUSP = 1, OE = 1, MODE = X, VPO/VMO = X, ENUM = X) INPUT OUTPUT D+ D- RCV VPI VMI RESULT 0 0 0 0 0 VPI/VMI ACTIVE 0 1 0 0 1 VPI/VMI ACTIVE 1 0 0 1 0 VPI/VMI ACTIVE 1 1 0 1 1 VPI/VMI ACTIVE *Timing specifications are not guaranteed for D+ and D-. 10 ______________________________________________________________________________________ ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect The Air-Gap Discharge Method involves approaching the device with a charged probe. The Contact Discharge Method connects the probe to the device before the probe is energized. Machine Model The Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resistance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. All pins require this protection during manufacturing. Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports. Applications Information External Components External Resistors Two external 23.7Ω ±1% to 27.4Ω ±1%, 1/2W resistors are required for USB connection. Place the resistors in between the MAX3344E/MAX3345E and the USB connector on the D+ and D- lines (see the Typical Operating Circuit). External Capacitors Use three external capacitors for proper operation. Use a 0.1µF ceramic for decoupling VL, a 1µF ceramic for decoupling VCC, and a 1.0µF (min) ceramic or plastic filter capacitor on VTRM. Return all capacitors to GND. UCSP Applications Information For the latest application details on UCSP construction, dimensions, tape carrier information, printed circuit board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, refer to the Application Note UCSP—A Wafer-Level Chip-Scale Package available on Maxim’s website at www.maxim-ic.com/ucsp. Chip Information TRANSISTOR COUNT: 2162 PROCESS: BiCMOS ______________________________________________________________________________________ 11 MAX3344E/MAX3345E IEC 1000-4-2 The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifically refer to integrated circuits. The MAX3344E/MAX3345E help the user design equipment that meets level 4 of IEC 1000-4-2, without the need for additional ESD-protection components. The major difference between tests done using the Human Body Model and IEC 1000-4-2 is a higher peak current in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD withstand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model. Figure 1c shows the IEC 1000-4-2 model. MAX3344E/MAX3345E ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect D+ 3V D- 0V tPHL(RCV) tPLH(RCV) VL RCV VL/2 0V tPHL(SE) tPLH(SE) VL VPI VL/2 0V tPLH(SE) tPHL(SE) VMI VL VL/2 0V D+/D- RISE/FALL TIMES ≤ 8ns, VL = 1.65V, 2.5V, 3.3V Figure 5. D+/D- to RCV, VPI, VMI Propagation Delays TEST POINT 3.3V D+ MAX3344E MAX3345E 23.7Ω TEST POINT VMI OR VPI OR RCV 1.5kΩ CL= 50pF 15kΩ 25pF MAX3344E MAX3345E TEST POINT (a) LOAD FOR VPI, VMI, AND RCV 23.7Ω DCL= 50pF USB_DET 15kΩ MAX3344E MAX3345E 23.7Ω TEST POINT 200Ω D+ OR D25pF 50pF + - (b) LOAD FOR D+, D-, AND USB_DET (c) LOAD FOR ENABLE AND DISABLE TIME, D+/D- Figure 6. Test Circuits 12 ______________________________________________________________________________________ GND OR VCC ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect USB SUPPLY VCC LINEAR REGULATOR VL Vbg BANDGAP VTRM TO INTERNAL CIRCUITS MAX3344E MAX3345E ENUM RCV RECEIVER GND 1.5kΩ SUSP TRANSMITTER D- 23.7Ω VMO MODE D+ VPO OE 23.7Ω EXTERNAL RESISTORS TO INTERNAL CIRCUITS VMI USB_DET VPI Vbg SINGLE-ENDED RECEIVERS Pin Configurations 1 TOP VIEW RCV 1 16 USB_DET VPO 2 15 VL MODE 3 14 VTRM VMO 4 OE 5 MAX3344E MAX3345E 13 D+ 12 D- SUSP 6 11 GND VPI 7 10 VCC VMI 8 9 TSSOP ENUM 2 3 4 BOTTOM VIEW MAX3344E/MAX3345E D VPO RCV VL VTRM C VMO MODE USB_DET D+ OE SUSP ENUM D- VPI VMI VCC GND B A UCSP ______________________________________________________________________________________ 13 MAX3344E/MAX3345E Functional Diagram Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 16L,UCSP.EPS MAX3344E/MAX3345E ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect PACKAGE OUTLINE, 4x4 UCSP 21-0101 14 ______________________________________________________________________________________ H 1 1 ±15kV ESD-Protected USB Transceivers in UCSP with USB Detect TSSOP4.40mm.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX3344E/MAX3345E Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)