D C B A VCC R1 10K R2 10K J1 1 2 3 4 5 TRIG ECHO OUT R9 1K CON-5 GND VCC Y1 P22 P21 P20 VCC P13 P12 C8 104 4M C6 22P C7 22P P11 GND VCC R5 10K 1 2 3 4 5 6 7 U1 P22 P21 P20 P23 P24 P25 VDD VSS P00 P10 P54 P13 P12 P11 EM78 14 13 12 11 10 9 8 P23 P24 P25 GND P00 P10 P54 R13 1K VCC P25 R3 1K C5 104 C2 104. P23 P24 1 3 4 5 11 10 12 9 15 Q1 U2 C1+ C1- C2+ C2- C1 104 GND GND VDD VCC T1IN T2IN T1OUT T2OUT R1OUT R2OUT GND ST202 RIN R2IN VEE C4 104 F2 T 2 16 14 7 13 8 6 C3 104 GND C10 104 GND R14 120K C14 104 C9 VCC R10 1K R11 1K GND R16 3.3M C15 104 R17 2K VCC 1/2VCC 104 GND GND R18 75K R4 10K Q2 R15 000 R6 10K GND VCC GND R12 3.9K U3 R23 6.8K R20 47K 14 13 12 1/2VCC 11 10 9 8 GND R19 75K C16 104 R21 160 F1 GND R R8 10K C12 102 C11 102 1 2 3 4 5 6 7 C13 104 1OUT 4OUT 1IN- 4IN- 1IN+ 4IN+ VCC GND 2IN+ 3IN+ 2IN- 3IN- 3OUT 2OUT TL074 R7 10K Title Size B Date: File: Number Revision 15-Jun-2011 Sheet of F:\产品\PCB\HY-SRF05超声波模块.Ddb Drawn By: D C B A