DS4776 Maxim Integrated Products, DS4776 Datasheet - Page 5

• Manufacturer Part Number: DS4776
• Description: (DS4xxx) DS4-XO Series Crystal Oscillators
• Manufacturer: Maxim Integrated Products

The devices consist of a fundamental-mode, AT-cut
crystal and a synthesizer IC that can synthesize any
one of these frequencies: 77.76MHz, 125MHz,
155.52MHz, 156.25MHz, 160MHz, 311.04MHz,
312.5MHz, and 622.08MHz.
All devices support two types of differential output dri-
vers: LVDS and LVPECL. When the OE signal is low,
Figure 1. Functional Diagram
Figure 2. LVDS Output Timing Diagram When OE Is Enabled
and Disabled
OUTN
OUTP
OE
0.7 x V
DS4125/DS4155/
DS4156/DS4160/
DS4311/DS4312/
DS4622/DS4776
X1
X2
CC
t
P1A
_______________________________________________________________________________________
Detailed Description
PHASE
STATE
TRI-
DET
DS4-XO Series Crystal Oscillators
FILTER
t
PA1
0.3 x V
CC
/m
LC-VCO
LVPECL outputs go to the PECL_BIAS level of
V
See Figures 2 and 3 for an LVDS and LVPECL output
timing diagram.
For more available frequencies, refer to the DS4106
data sheet at www.maxim-ic.com/DS4106.
Figure 3. LVPECL Output Timing Diagram When OE Is Enabled
and Disabled
CC
OUTN
OUTP
- 2.0V, while the LVDS outputs are a logical one.
OE
/n
0.7 x V
PECL_BIAS
PECL_BIAS
CC
t
PZA
OUTSELN
Additional Information
GND
V
OUTDRV
CC
0.3 x V
t
PAZ
PECL_BIAS
PECL_BIAS
OE
OUTP
OUTN
CC
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