pca9508 NXP Semiconductors, pca9508 Datasheet - Page 2

• Manufacturer Part Number: pca9508
• Description: Hot Swappable Level Translating I 2c-bus Repeater
• Manufacturer: NXP Semiconductors

NXP Semiconductors
2. Features
PCA9508_1
Product data sheet
This prevents a lock-up condition from occurring. The output pull-down on the A side
drives a hard LOW and the input level is set at 0.5V
lower LOW level in systems where the low voltage side supply voltage is as low as 0.9 V.
Table 1
Table 1.
[1]
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Feature
V
V
rise time
accelerator
idle/stop detect
for hot-swap
normal I/O
static level offset
CC(A)
CC(B)
2 channel, bidirectional buffer isolates capacitance and allows 400 pF on either side of
the device
Supports offset-free hot-swap with IDLE/STOP detect circuitry
Voltage level translation from 0.9 V to 5.5 V and from 2.7 V to 5.5 V
Footprint and functional replacement for PCA9515, PCA9515A, PCA9517 and
PCA9517A
I
Active HIGH repeater enable input
Static level offset on B side
Open-drain input/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
A side operating supply voltage range of 0.9 V to 5.5 V
B side operating supply voltage range of 2.7 V to 5.5 V
5 V tolerant I
0 Hz to 400 kHz clock frequency (the maximum system operating frequency may be
less than 400 kHz because of the delays added by the repeater).
ESD protection exceeds 6000 V HBM per JESD22-A114, 450 V MM per
JESD22-A115, and 1000 V CDM per JESD22-C101
Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
Packages offered: SO8 and TSSOP8
PCA9517A is the high ESD (6.5 kV HBM and 550 V MM) drop-in replacement for PCA9517.
2
C-bus and SMBus compatible
range (V)
range (V)
shows the comparison between PCA9508 and I
PCA9508 and I
2
C-bus and enable pins
PCA9507
2.7 to 5.5
2.7 to 5.5
yes
-
A side
B side
Rev. 01 — 28 April 2008
2
C-bus repeaters comparison
PCA9508
0.9 to 5.5
2.7 to 5.5
-
yes
A side
B side
2
C-bus pins
Hot swappable level translating I
PCA9509
1.1 to V
3.0 to 5.5
-
-
B side
A side
CC(B)
CC(A)
2
C-bus devices and multiple masters
2
1 0.9 to 5.5
C-bus repeaters.
to accommodate the need for a
PCA9517A
2.7 to 5.5
-
-
A side
B side
[1]
PCA9508
© NXP B.V. 2008. All rights reserved.
2
PCA9519
1.1 to V
3.0 to 5.5
-
-
B side
A side
C-bus repeater
CC(B)
2 of 21
1