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參數資料
| 型號： | ICS840AG-77T |
| 英文描述： | 77.76MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT |
| 中文描述： | 77.76MHZ，的LVCMOS / LVTTL振蕩器置換 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 171K |
| 代理商： | ICS840AG-77T |
840AG-77
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 7, 2005
1
Integrated
Circuit
Systems, Inc.
ICS840-77
77.76MH
Z
, LVCMOS/LVTTL
O
SCILLATOR
R
EPLACEMENT
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS840-77 is a SONET Oscillator Replace-
ment and a member of the HiPerClocks
TM
family of high performance devices from ICS.
The ICS840-77 uses a 19.44MHz crystal to
synthesize 77.76MHz. The ICS840-77 has
excellent jitter performance. The ICS840-77 is packaged in
a small 8-pin TSSOP, making it ideal for use in systems with
limited board space.
F
EATURES
One LVCMOS/LVTTL output, 15
Ω
output impedence
Crystal oscillator interface designed for 19.44MHz,
18pF parallel resonant crystal
Output frequency: 77.76MHz
Random jitter: 2.82ps (typical)
Deterministic jitter: 0.205ps (typical)
3.3V operating supply
0°C to 70°C ambient operating temperature
Available in both standard and lead-free RoHS-compliant
packages
HiPerClockS
ICS
ICS840-77
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
ICS840-77
8-Lead SOIC
3.90mm x 4.92mm x 1.37mm body package
M Package
Top View
1
2
3
4
8
7
6
5
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
Clock
Synthesizer
XTAL_IN
XTAL_OUT
OE
Q0
Pullup
19.44MHz
77.76MHz
Q1
V
DD
XTAL_OUT
XTAL_IN
OE
Q1
Q0
V
DDO
GND
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on
initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications
without notice.
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