Datasheet > PCA950PGM

PCA950PGM

更新时间： 2022-03-23 21:25:20

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
23页	1093K
描述
Low power level translating I2C-bus/SMBus repeater

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PCA950PGM 数据手册

PCA9509P

NXP Semiconductors

Low power level translating I²C-bus/SMBus repeater

1.1 Selection recommendations

The PCA9509P should be used if an external A-port pull-up resistor is required to adjust

current for noise margin considerations or to reduce operating current consumption. See

Table 1 for comparison.

Table 1.

Device selection recommendation

Recommended device

Concern

PCA9509

0.1 V

PCA9509A

0.85 V

PCA9509P

A-port — lowest voltage

A-port — current source^[1]

operating current^[2]

0.85 V

yes — 1 mA

< 6.1 mA

< 2 mA

yes — 270 A

< 1.9 mA

no — external pull-up

< 0.95 mA

standby current EN = LOW

< 22 A max.

[1] The PCA9509 current mirrors do not shut down when the device is disabled allowing instant turn-on, but at

the cost of the higher standby current. The PCA9509A and PCA9509P current mirrors are turned off when

disabled for lowest standby power consumption, but sufficient delay (10 s) after enable is needed before

resuming operation.

[2] Operating currents do not include the current consumed by the external pull-ups on B-port or the external

pull-ups on the A-port of the PCA9509P.

2. Features and benefits

 Bidirectional buffer isolates capacitance and allows 400 pF on port B of the device

 Voltage level translation from port A (0.8 V to 1.5 V) to port B (2.3 V to 5.5 V)

 No internal current source on A port to reduce current consumption for portable

applications

 Active HIGH enable input disables current mirrors to reduce standby power

 Open-drain inputs/outputs

 Lock-up free operation

 Supports arbitration and clock stretching across the repeater

 Accommodates Standard-mode and Fast-mode I²C-bus devices and multiple masters

 Powered-off high-impedance I²C-bus pins

 Operating supply voltage range of 0.8 V to 1.5 V on port A, 2.3 V to 5.5 V on port B

 All pins are 5 V tolerant with respect to ground pin

 0 Hz to 400 kHz clock frequency

Remark: The maximum system operating frequency may be less than 400 kHz

because of the delays added by the repeater.

 ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per

JESD22-C101

 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

 Packages offered: TSSOP8, XQFN8

PCA9509P

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 1 — 14 August 2012

2 of 23

123 4 5 6 7...23

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与PCA950PGM相关器件

型号	品牌	获取价格	描述	数据表
PCA9510	NXP	获取价格	Hot swappable I2C and SMBus bus buffer
PCA9510A	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer
PCA9510AD	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer
PCA9510ADP	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer
PCA9510ADP-T	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer - I2C-bus: 400 kHz; Inputs: 1 ; Operating tempe
PCA9510AD-T	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer - I2C-bus: 400 kHz; Inputs: 1 ; Operating tempe
PCA9510D	NXP	获取价格	Hot swappable I2C and SMBus bus buffer
PCA9510D,112	NXP	获取价格	PCA9510D
PCA9510D,118	NXP	获取价格	PCA9510D
PCA9510DP	NXP	获取价格	Hot swappable I2C and SMBus bus buffer

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