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PCA9538DW Datasheet(PDF) 2 Page - Texas Instruments |
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PCA9538DW Datasheet(HTML) 2 Page - Texas Instruments |
2 / 29 page www.ti.com PCA9538 REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS SCPS126D – SEPTEMBER 2006 – REVISED MARCH 2007 Two hardware pins (A0 and A1) are used to program and vary the fixed I2C address and allow up to four devices to share the same I2C bus or SMBus. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING QFN – RGT Reel of 3000 PCA9538RGTR PREVIEW QFN – RGV Reel of 2500 PCA9538RGVR PREVIEW QSOP – DBQ Reel of 2500 PCA9538DBQR PD538 Tube of 40 PCA9538DW SOIC – DW PCA9538 Reel of 2000 PCA9538DWR –40 °C to 85°C Reel of 2000 PCA9538DBR SSOP – DB PD538 Tube of 80 PCA9538DB Tube of 90 PCA9538PW TSSOP – PW PD538 Reel of 2000 PCA9538PWR TVSOP – DGV Reel of 2000 PCA9538DGVR PD538 (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. TERMINAL FUNCTIONS NO. QSOP (DBQ), NAME DESCRIPTION SSOP (DB), QFN (RGT) OR TSSOP (PW), OR QFN (RGV) TVSOP (DGV) 1 15 A0 Address input. Connect directly to VCC or ground. 2 16 A1 Address input. Connect directly to VCC or ground. Active-low reset input. Connect to VCC through a pullup resistor if no active 3 1 RESET connection is used. 4 2 P0 P-port input/output. Push-pull design structure. 5 3 P1 P-port input/output. Push-pull design structure. 6 4 P2 P-port input/output. Push-pull design structure. 7 5 P3 P-port input/output. Push-pull design structure. 8 6 GND Ground 9 7 P4 P-port input/output. Push-pull design structure. 10 8 P5 P-port input/output. Push-pull design structure. 11 9 P6 P-port input/output. Push-pull design structure. 12 10 P7 P-port input/output. Push-pull design structure. 13 11 INT Interrupt output. Connect to VCC through a pullup resistor. 14 12 SCL Serial clock bus. Connect to VCC through a pullup resistor. 15 13 SDA Serial data bus. Connect to VCC through a pullup resistor. 16 14 VCC Supply voltage 2 Submit Documentation Feedback |
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