MAX14548E Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 100Mbps, 16-Channel LLTs

19-5248; Rev 0; 4/10
EVAALVUAAILTAIOBNLEKIT
100Mbps, 16-Channel LLTs
General Description
The MAX14548E/MAX14548AE 16-channel, bidirectional
level translators (LLTs) provide the level shifting neces-
sary for 100Mbps data transfer in multivoltage systems.
Externally applied voltages, VCC and VL, set the logic
levels on either side of the device. Logic signals present
on the VL side of the device appear as a high-voltage
logic signal on the VCC side of the device and vice versa.
The devices feature a programming frequency input (PF) that
adjusts the one-shot accelerator on-time to guarantee a bit
rate of 100Mbps with a load capacitance < 15pF and VL >
1.1V (MAX14548E) or VL > 1.4V (MAX14548AE) when driven
low. The MAX14548E can drive capacitive loads up to
50/R 1.1pF with a guaranteed bit rate of 40Mbps when
VL > 1.1/R 1.1V and PF is driven high. The MAX14548AE
can drive capacitive loads up to 50pF with a guaranteed
bit rate of 40Mbps when VL > 1.1V and PF is driven high.
The device operate at full speed with external drivers
that source as low as 4mA output current. Each I/O chan-
nel is pulled up to VCC or VL by an internal 35FA current
source, allowing both devices to be driven by either
push-pull or open-drain drivers.
The devices feature multiple power-saving features
including an enable input (EN) that places the device
into a low-power shutdown mode when driven low and
an automatic shutdown mode that disables the part
when VCC is less than VL. The MAX14548AE output driv-
er is designed to operate at full speed (100Mbps) with
VL > 1.4V, which reduces the dynamic supply current vs.
the MAX14548E. The state of I/O VCC_and I/O VL_are in
high-impedance state during shutdown.
The devices operate with VCC voltages from +1.7V to
+3.6V and VL voltages from +1.1V to +3.6V, making
them ideal for data transfer between low-voltage ASICs/
PLDs and higher voltage systems. The devices are avail-
able in a 40-bump WLP (2.16mm x 3.46mm) package
with 0.4mm ball pitch, and operate over the extended
-40NC to +85NC temperature range.
Features
S Bidirectional Level Translation
S 100Mbps Guaranteed Data Rate
S +1.7V to +3.6V Supply Voltage Range for VCC
S +1.1V to +3.6V Supply Voltage Range for VL
(VCC > VL)
S -40NC to +85NC Extended Operating Temperature
Range
Applications
CMOS Logic-Level Translation
Low-Voltage ASIC Level Translation
Smart Card Readers
Portable Communication Devices
Cell Phones
GPS
Telecommunications Equipment
Typical Operating Circuit appears at end of data sheet.
Ordering Information/Selector Guide
PART
PIN-
PACKAGE
BIT RATE (PF = LOW)
LOAD CAPACITANCE < 15pF
(Mbps)
BIT RATE (PF = HIGH)
LOAD CAPACITANCE < 50pF
(Mbps)
MAX14548EEWL+
40 WLP
100
40
MAX14548AEEWL+ 40 WLP
100
40
Note: All devices operate over the -40°C to +85°C operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
LOW DYNAMIC
SUPPLY
CURRENT
—
Yes (VL > 1.1V)
________________________________________________________________ Maxim Integrated Products   1
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