sy89833al Micrel Semiconductor, sy89833al Datasheet - Page 3

• Manufacturer Part Number: sy89833al
• Description: 3.3v Low Noise Ultra-precision 1 4 Lvds Fanout Buffer/translator With Internal Termination
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Pin Description
March 2009
Pin Number
15, 16
9, 12
7, 14
1, 2
3, 4
5, 6
10
11
13
8
Pin Name
VREF-AC
Q0, /Q0
Q1, /Q1
Q2, /Q2
Q3, /Q3
/IN, IN
GND
VCC
EN
VT
Pin Function
LVDS Differential Outputs: Normally terminated with 100Ω across the pair (Q,
/Q). See “LVDS Outputs” section, Figure 2a. Unused outputs should be
terminated with a 100Ω resistor across each pair.
This single-ended TTL/CMOS-compatible input functions as a synchronous
output enable. The synchronous enable ensures that enable/disable will only
occur when the outputs are in a logic LOW state. Note that this input is internally
connected to a 25kΩ pull-up resistor and will default to logic HIGH state
(enabled) if left open.
Differential Input: This input pair is the differential signal input to the device.
Input accepts AC- or DC-Coupled differential signals as small as 100mV. Each
pin of the pair internally terminates to a VT pin through 50Ω. Note that this input
will default to an intermediate state if left open. Please refer to the “Input
Interface Applications” section for more details.
Reference Voltage: This output biases to V
Coupling the input (IN, /IN). For AC-Coupled applications, connect VREF-AC to
VT pin and bypass with 0.1µF low ESR capacitor to V
Applications” section for more details. Maximum sink/source current is ±1.5mA.
Due to the limited drive capability, each VREF-AC pin is only intended to drive its
respective VT pin.
Input Termination Center-Tap: Each side of the differential input pair terminates
to the VT pin. The VT pin provides a center-tap to a termination network for
maximum interface flexibility. See “Input Interface Applications” section for more
details.
Ground. GND pin and exposed pad must be connected to the most negative
potential of the device ground.
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors and
place as close to each VCC pin as possible.
3
CC
–1.4V. It is used when AC-
[e-mail]
CC
. See “Input Interface
or [phone]
M9999-032609-A
SY89833AL