FXMA2102UMX Fairchild Semiconductor, FXMA2102UMX Datasheet - Page 7

• Manufacturer Part Number: FXMA2102UMX
• Description: I/O Expanders, Repeaters & Hubs 2xSupply 2-Bit Volt Trnsltr/Bffr/Rptr
• Manufacturer: Fairchild Semiconductor

Specifications of FXMA2102UMX

• Operating Supply Voltage: 1.65 V to 5.5 V
• Power Dissipation: 0.129 mW
• Operating Temperature Range: - 40 C to + 85 C
• Input Voltage: 1.65 V to 5.5 V
• Output Current: +/- 50 mA
• Output Voltage: - 0.5 V to + 7 V
• Package / Case: Ultrathin MLP-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2010 Fairchild Semiconductor Corporation
FXMA2102 • Rev. 1.0.2
Buffer / Repeater Performance
The FXMA2102 dynamic drivers have enough current
sourcing capability to drive a 400pF capacitive bus. This
is beneficial for instances when an I
is required. The I
bus capacitance of 400pF. If an I
400pF, an I
segment into two segments, each of which is less than
400pF. Figure 5 is a scope shot of an FXMA2102
driving a lumped load of 600pF. Notice the (30% - 70%)
rise time is only 112ns (R
the maximum edge rate of 300ns. Not only does the
FXMA2102 drive 400pF, but it also provides excellent
headroom below the I
rate of 300ns.
2
C buffer / repeater is required to split the
2
C specification stipulates a maximum
2
C specification maximum edge
PU
= 2.2K). This is well below
2
C segment exceeds
2
C buffer / repeater
Figure 6. V
7
OL
V
The I
3mA) of V
is a master on the A port of an I
of 1.65V and a slave on the I
V
0.3) 495mV. The slave could legally transmit a valid
logic LOW of 0.4V to the master.
If the I
voltage drop across the translator could present a V
the master greater than 495mV. To complicate matters,
the I
recommended
400pF. More I
I
translators exhibit low V
depicts typical FXMA2102 V
competition, given a 0.4V V
2
CC
C translator. The I
OL
vs. I
of 3.3V, the maximum V
vs. I
2
2
C specification mandates a maximum V
OL
2
C specification states that 6mA of I
C translator’s channel resistance is too high, the
OL
CC
• 0.3 and a maximum V
OL
for
increases the voltage drop across the
2
bus
C application benefits when I
OL
IL
capacitances
.
IL
2
C translator B port with a
OL
of the master is (1.65V x
performance. Figure 6
2
C translator with a V
performance vs. the
OL
of 0.4V. If there
approaching
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IL
(I
OL
OL
IL
2
CC
of
to
is
C