PCA9521DP 데이터 시트보기 (PDF) - NXP Semiconductors.
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PCA9521DP Datasheet PDF : 23 Pages
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NXP Semiconductors
5. Block diagram
PCA9521
Fast dual bidirectional bus buffer
1.8 V to 10 V 1.8 V to 10 V 2.7 V to 5.5 V 1.8 V to 10 V 1.8 V to 10 V
R1
enable
(up to 10 V)
R2
EN 1
VCC
8
PCA9521
R3
R4
SCL
SA1 2
3 SA2
SCL
SDA
Fig 1. Block diagram
6. Pinning information
6.1 Pinning
SB1 7
6 SB2
4
GND
SDA
002aaf280
EN 1
SA1 2
SA2 3
GND 4
8 VCC
7 SB1
PCA9521D
6 SB2
5 n.c.
002aaf278
Fig 2. Pin configuration for SO8
EN 1
SA1 2
SA2 3
GND 4
PCA9521DP
8 VCC
7 SB1
6 SB2
5 n.c.
002aaf279
Fig 3. Pin configuration for TSSOP8
6.2 Pin description
PCA9521
Product data sheet
Table 3.
Symbol
EN
SA1
SA2
GND
n.c.
SB2
SB1
VCC
Pin description
Pin Description
1
enable
2
buffer A, port 1 (SCL output[1])
3
buffer A, port 2 (SCL input[1])
4
supply ground
5
not connected
6
buffer B, port 2 (SDA input[1])
7
buffer B, port 1 (SDA output[1])
8
positive supply
[1] Recommended I2C-bus orientation for device family compatibility.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 19 March 2013
© NXP B.V. 2013. All rights reserved.
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