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PCF8574T/3 数据表(PDF) 3 Page - NXP Semiconductors |
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PCF8574T/3 数据表(HTML) 3 Page - NXP Semiconductors |
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3 / 33 page ![]() PCF8574_PCF8574A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved. Product data sheet Rev. 5 — 27 May 2013 3 of 33 NXP Semiconductors PCF8574; PCF8574A Remote 8-bit I/O expander for I2C-bus with interrupt 5. Block diagram PCF8574TS/3 PCF8574TS/3,112 SSOP20 Standard marking * IC’s tube - DSC bulk pack 1350 Tamb = 40 C to +85 C PCF8574TS/3,118 SSOP20 Reel 13” Q1/T1 *standard mark SMD 2500 Tamb = 40 C to +85 C PCF8574ATS/3 PCF8574ATS/3,118 SSOP20 Reel 13” Q1/T1 *standard mark SMD 2500 Tamb = 40 C to +85 C Table 2. Ordering options …continued Type number Orderable part number Package Packing method Minimum order quantity Temperature range Fig 1. Block diagram Fig 2. Simplified schematic diagram of P0 to P7 002aad624 INT I2C-BUS CONTROL LP FILTER PCF8574 PCF8574A INTERRUPT LOGIC A0 A1 A2 INPUT FILTER SHIFT REGISTER SDA SCL 8 bits write pulse read pulse POWER-ON RESET VDD VSS I/O PORT P0 P1 P2 P3 P4 P5 P6 P7 002aac109 write pulse read pulse D CI S FF Q power-on reset data from Shift Register Itrt(pu) 100 μA IOH IOL VDD P0 to P7 VSS D CI S FF Q data to Shift Register to interrupt logic |
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