A S 11 5 6 / A S 11 5 4
S i n g l e / D u a l LV D S D r i v e r
D a ta S he e t
1 General Description
The AS1156/AS1154 is a Single/Dual Flow-Through
LVDS (Low-Voltage Differential Signaling) Line Driver
which accepts and converts LVTTL/LVCMOS input lev-
els into LVDS output signals. The device is perfect for
low-power low-noise applications requiring high signal-
ing rates and reduced EMI emissions.
The device is guaranteed to transmit data at speeds up
to 800Mbps (400MHz) over controlled impedance media
of approximately 100Ω. Supported transmission media
are PCB traces, backplanes, and cables.
The AS1156 is a single LVDS transmitter, and the
AS1154 is a dual LVDS transmitter.
Outputs conform to the
ANSI TIA/EIA-644 LVDS
stan-
dards. Flow-through pinout simplifies PC board layout
and reduces crosstalk by separating the LVTTL/LVC-
MOS inputs and LVDS outputs.
The AS1156/AS1154 operates from a single +3.3V sup-
ply and is specified for operation from -40 to +85°C.
2 Key Features
Flow-Through Pinout
Guaranteed 800Mbps Data Rate
250ps Pulse Skew (Max)
Conforms to
ANSI TIA/EIA-644
LVDS Standards
Single +3.3V Supply
Operating Temperature Range: -40 to +85°C
8-Pin SOIC Package
3 Applications
Digital Copiers, Laser Printers, Cellular Phone Base Sta-
tions, Add/Drop Muxes, Digital Cross-Connects,
DSLAMs, Network Switches/Routers, Backplane Inter-
connect, Clock Distribution Computers, Intelligent Instru-
ments, Controllers, Critical Microprocessors and
Microcontrollers, Power Monitoring, and Portable/Bat-
tery-Powered Equipment.
Figure 1. Block Diagram
AS1156
AS1154
V
CC
Tx
OUT1-
V
CC
Tx
OUT1-
IN1
OUT1+
IN1
OUT1+
N/C
N/C
IN2
Tx
OUT2+
GND
N/C
GND
OUT2-
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