MAX3450 MAXIM [Maxim Integrated Products], MAX3450 Datasheet
MAX3450
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MAX3450 Summary of contents
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... Integrated ±15kV ESD protection protects the USB D+ and D- bidirectional bus connections. The MAX3450E is pin compatible with Micrel’s MIC2550A. The MAX3451E features an internal 1.5kΩ USB pullup resistor and an enumeration function that allows devices to logically disconnect while plugged in ...
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... D+ D- MAX3450E, Full-speed idle, MAX3451E SE0, or suspend mode MAX3452E MAX3450E, MAX3451E open, SUS = OE = high (ENUM = low) MAX3452E V = GND or open L MAX3450E GND or open, BUS MAX3451E OE = low low or high low or MAX3452E high, SUS = high V = GND or open +5.5V BUS GND or open +5.5V ...
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... Human Body Model IE C 1000 ontact D i schar g e _______________________________________________________________________________________ = +1.65V to +3.6V +25°C.) (Note 1) A CONDITIONS MAX3450E/MAX3451E, supply lost M AX3450E /M AX 3451E , sup esent (N ote 3) MAX3452E, supply lost MAX3452E, supply present MAX3450E/MAX3451E MAX3452E TH_VL VM, VP, SUS, SPD, ENUM ...
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ESD-Protected USB Transceivers TIMING CHARACTERISTICS (V = +4.0V to +5. +3.0V to +3.6V, V BUS TRM are +5V +2.5V, and T = +25°C.) (Note 1) BUS L A PARAMETER SYM B ...
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... SPD = GND 750kHz 100 150 200 250 300 350 400 D+/D- CAPACITANCE (pF) RISE-/FALL-TIME MATCHING (LOW SPEED) MAX3450-52E toc03 C = 400pF L D+/D- 1V/div 100ns/div LOGIC SUPPLY CURRENT vs. D+/D- CAPACITANCE 500 450 400 350 SPD = 6MHz L IN 300 250 ...
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... Suspend Input. Drive SUS low for normal operation. Drive SUS high to put the 8 7 SUS MAX3450E/MAX3451E/MAX3452E into suspend mode. RCV asserts low in suspend mode. VP and VM remain active in suspend mode. Output Enable. Drive OE to GND to enable the transmitter outputs. Drive ...
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... CONTROL LOGIC GND as low as +1.65V, ensuring compatibility with low-volt- age ASICs. The MAX3450E/MAX3451E/MAX3452E derive power from the USB host (V (MAX3450E and MAX3451E) connected +3.3V regulated supply connected to V The MAX3450E/MAX3451E/MAX3452E meet the physical-layer specifications for logic-level supply volt- L Functional Diagram V LDO ...
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... Power-Supply Configurations Normal Operating Mode Connect V and V to system power supplies L BUS (Table 1). Connect +1.65V to +3.6V supply. L Connect +4.0V to +5.5V supply. Alternatively, BUS the MAX3450E and MAX3451E can derive power from Table 1. Power-Supply Configurations V (V) V (V) BUS TRM +4.0 to +5.5 +3.0 to +3.6 output +3.1 to +4.5 +3.0 to +3.6 output +3.0 to +3.6 +3 ...
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... V OLD Figure 1. Rise and Fall Times _______________________________________________________________________________________ Device Control The SUS state determines whether the MAX3450E/ OE MAX3451E/MAX3452E operate in normal mode or in suspend mode. Connect SUS to GND to enable normal operation. Drive SUS high to enable suspend mode. RCV asserts low and VP and VM remain active in sus- pend mode (Tables 3 and 4) ...
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... OE = high, D+ and D- serve as receiver inputs. For most applications, V connects to the V BUS minal on the USB connector. V BUS an external supply as low as +3.1V (MAX3450E and MAX3451E). See the Power-Supply Configurations sec- tion. Drive V low to enable sharing mode. Bypass BUS V to GND with a 0.1µF ceramic capacitor as close BUS to the device as possible ...
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... DUT D+/D- VP/VM D+/D- CONNECTED TO GND, VP/VM CONNECTED TO PULLUP t t PLZ_SE PZL_SE D+/D- CONNECTED TO +3V, VP/VM CONNECTED TO PULLDOWN t t PHZ_SE PZH_SE TEST MAX3450E POINT MAX3451E RCV, VM, MAX3452E AND (a) LOAD FOR RCV, VM, AND VP TEST MAX3450E POINT 24Ω MAX3451E D+ AND D- MAX3452E C L (b) LOAD FOR D+/D- 15kΩ 11 ...
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ESD-Protected USB Transceivers ESD Protection D+ and D- possess extra protection against static elec- tricity to protect the devices up to ±15kV. The ESD structures withstand high ESD in all operating modes: normal operation, suspend mode, and powered down. ...
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ESD-Protected USB Transceivers +1.65V TO +3.6V 0.1µ BUS V VP L(I/O) D- MAX3451E VM D+ RCV GND ASIC ENUM SUS V TRM SPD OE ______________________________________________________________________________________ Typical Operating Circuit 0.1µF PC 24.3Ω 1% 24.3Ω 1% 15kΩ 15kΩ ...
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ESD-Protected USB Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages 0.10 C ...
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ESD-Protected USB Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE ...
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ESD-Protected USB Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely ...