PCA9509ADP,118 NXP Semiconductors, PCA9509ADP,118 Datasheet - Page 2

• Manufacturer Part Number: PCA9509ADP,118
• Description: Interface - Signal Buffers, Repeaters I2CbusSMBus repeater
• Manufacturer: NXP Semiconductors

Specifications of PCA9509ADP,118

• Rohs: yes
• Operating Supply Voltage: 0.8 V to 5.5 V
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Logic Type: I2C, SMBus
• Maximum Clock Frequency: 400 KHz
• Maximum Operating Frequency: 400 KHz
• Power Dissipation: 100 mW
• Factory Pack Quantity: 2500

NXP Semiconductors
2. Features and benefits
PCA9509A
Product data sheet
1.1 Selection recommendations
The PCA9509A is recommended for all applications except in the following cases:
Table 1.
[1]
[2]
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Concern
A-port — lowest voltage
A-port — current source
operating current
standby current EN = LOW
•
•
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)
Requires no external pull-up resistors on lower voltage port A
Active HIGH repeater enable input disables current mirrors and current source to
reduce standby power
Open-drain port B inputs/outputs
Lock-up free operation
Supports arbitration and clock stretching across the repeater
Accommodates Standard-mode and Fast-mode I
Powered-off high-impedance I
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 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
even more.
The PCA9509 should be used if instant on from disable is required with A Port voltage
greater than 1.0 V and larger standby current is not a concern.
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.
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.
Device selection recommendation
All information provided in this document is subject to legal disclaimers.
[2]
Rev. 1 — 29 February 2012
[1]
Recommended device
PCA9509
0.95 V with limitations
yes — 1 mA
< 6.1 mA
< 2 mA
Low power level translating I
2
C-bus pins
PCA9509A
0.80 V
yes — 270 A
< 1.9 mA
< 10 A max.
2
C-bus devices and multiple masters
2
C-bus/SMBus repeater
PCA9509A
PCA9509P
0.80 V
no — external pull-up
< 0.95 mA
< 10 A max.
© NXP B.V. 2012. All rights reserved.
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