8574A Просмотр технического описания (PDF) - NXP Semiconductors.
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8574A Datasheet PDF : 33 Pages
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NXP Semiconductors
PCF8574; PCF8574A
Remote 8-bit I/O expander for I2C-bus with interrupt
Table 2. Ordering options …continued
Type number Orderable
part number
Package Packing method
PCF8574TS/3 PCF8574TS/3,112 SSOP20
PCF8574TS/3,118 SSOP20
PCF8574ATS/3 PCF8574ATS/3,118 SSOP20
Standard marking
* IC’s tube - DSC bulk pack
Reel 13” Q1/T1
*standard mark SMD
Reel 13” Q1/T1
*standard mark SMD
5. Block diagram
Minimum
order
quantity
1350
Temperature range
Tamb = 40 C to +85 C
2500
Tamb = 40 C to +85 C
2500
Tamb = 40 C to +85 C
INT
A0
A1
A2
SCL
SDA
PCF8574
PCF8574A
LP FILTER
INPUT
FILTER
I2C-BUS
CONTROL
VDD
POWER-ON
RESET
VSS
Fig 1. Block diagram
INTERRUPT
LOGIC
P0
P1
P2
SHIFT
8 bits
I/O
P3
REGISTER
PORT
P4
P5
P6
P7
write pulse
read pulse
002aad624
PCF8574_PCF8574A
Product data sheet
write pulse
data from Shift Register
power-on reset
DQ
FF
CI
S
Itrt(pu)
IOH
100 μA
IOL
VDD
P0 to P7
VSS
read pulse
data to Shift Register
DQ
FF
CI
S
to interrupt logic
002aac109
Fig 2. Simplified schematic diagram of P0 to P7
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 27 May 2013
© NXP B.V. 2013. All rights reserved.
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