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PI90LV047A/PI90LVB047A
3V LVDS Quad Flow-Through
Differential Line Drivers
Features
• >500 Mbps (250 MHz) switching rates
• Flow-through pinout simplifies PCB layout
• Low Voltage Differential Signaling with output voltages
of ±350mV into:
– 100-ohm load (PI90LV047)
– 50-ohm load (PI90LVB047)
• 300ps typical differential skew
• 400ps maximum differential skew
• 1.7ns maximum propagation delay
• 3.3V power supply design
• ±350mV differential signaling
• Bus-Pin ESD protection >10kV
• Interoperable with existing 5V LVDS receivers
• High impedance on LVDS outputs on power down
• Conforms to TIA/EIA-644 LVDS Standard
• Industrial operating temperature range (–40°C to +85°C)
• Packages (Pb-free & Green Available):
– 16-pin SOIC (S)
– 16-pin TSSOP (L)
Description
The PI90LV047A/PI90LVB047A are quad flow-through differential
line drivers designed for applications requiring ultra-low power
dissipation and high data rates. The devices are designed to support
data rates in excess of 400 Mbps (200 MHz) using Low Voltage
Differential Signaling (LVDS) technology.
The PI90LV047A/PI90LVB047A accept low-voltage TTL/CMOS
input levels and translates them to low-voltage (350 mV) differential
output signals.
The PI90LVB047A doubles the output drive current to achieve Bus
LVDS signaling levels with a 50-ohm load. A doubly terminated Bus
LVDS line enables multipoint configurations. In addition, the driver
supports a 3-state function that may be used to disable the output
stage, disabling the load current, and thus dropping the device to an
ultra low idle power state of 13mW typical. The devices have a flow-
through pinout for easy PCB layout.
The EN and EN inputs are banded together and control the 3-state
outputs. The enables are common to all four drivers.
The intended application of these devices and signaling technique
is for both point-to-point baseband (PI90LV047A) and multipoint
(PI90LVB047A) data transmission over controlled impedance media.
Block Diagram
Pin Configuration
D
IN1
D1
D
OUT1+
D
OUT1–
EN
D
IN1
D
IN2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
D
OUT1–
D
OUT1+
D
OUT2+
D
OUT2–
D
OUT3–
D
OUT3+
D
OUT4+
D
OUT4–
D
IN2
D2
D
OUT2+
D
OUT2–
V
CC
GND
D
IN3
D
IN3
D3
D
OUT3+
D
OUT3–
D
IN4
EN
D
IN4
D4
D
OUT4+
D
OUT4–
Truth Table
Enable s
EN
EN
L or Open
Input
D
IN
L
H
X
Outputs
D
OUT+
D
OUT–
L
H
Z
H
L
Z
EN
EN
H
All other combinations of ENABLE inputs
1
PS8611B
10/04/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
