MAX3349E Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX3349E

Hi-Speed USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode

Maxim Integrated 

Hi-Speed USB 2.0 Full-Speed Transceiver

with UART Multiplexing Mode

Timing Diagrams

VUSB_OHD, VOHD

tFR, tFR_TUART

90%

tFF, tFF_TUART

90%

10%

10%

VUSB_OLD, VOLD

Figure 1. Rise and Fall Times

OE

D+/D-

tPLZ_DRV

OE

D+/D-

VP/VM CONNECTED TO GND,

D+/D- CONNECTED

TO PULLUP

tPZL_DRV

VP/VM CONNECTED TO VL,

D+/D- CONNECTED

TO PULLDOWN

VP AND VM RISE/FALL TIMES < 4ns

VM

VP

tPLH_DRV

tPHL_DRV

D-

VCRS_F

D+

Figure 2. Timing of VP and VM to D+ and D-

tPHZ_DRV

tPZH_DRV

Figure 3. Driver Enable and Disable Timing

+3V

D+/D-

0V

INPUT RISE/FALL TIME < 4ns

VL

tPLH_RCV,

tPLH_SE

RCV, VM, AND VP

Figure 4. D+/D- Timing to VP, VM, and RCV

tPHL_RCV,

tPHL_SE

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