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SY89825UHI Datasheet

  • SY89825UHI

  • 2.5/3.3V 1:22 HIGH-PERFORMANCE, LOW-VOLTAGE PECL BUS CLOCK D...

  • 62.31KB

  • 8頁

  • MICREL   MICREL

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2.5/3.3V 1:22 HIGH-PERFORMANCE,
ClockWorks鈩?/div>
LOW-VOLTAGE PECL BUS CLOCK DRIVER
SY89825U
& TRANSLATOR w/ INTERNAL TERMINATION
FINAL
FEATURES
s
LVPECL or LVDS input to 22 LVPECL outputs
s
100K ECL compatible outputs
s
LVDS input includes 100
鈩?/div>
termination
s
Guaranteed AC parameters over voltage:
DESCRIPTION
The SY89825U is a High Performance Bus Clock Driver
with 22 differential LVPECL output pairs. This part is
designed for use in low voltage (2.5V, 3.3V) applications
which require a large number of outputs to drive precisely
aligned, ultra low skew signals to their destination. The
input is multiplexed from either LVDS or LVPECL by the
CLK_SEL pin. The LVDS input includes a 100鈩?internal
termination, thus eliminating the need for external
termination. The Output Enable (OE) is synchronous so
that the outputs will only be enabled/disabled when they
are already in the LOW state. This eliminates any chance
of generating a runt clock pulse when the device is enabled/
disabled as can happen with an asynchronous control.
The SY89825U features low pin-to-pin skew (35ps max.)
鈥攑erformance previously unachievable in a standard
product having such a high number of outputs. The
SY89825U is available in a single space saving package
which provides a lower overall cost solution. In addition, a
single chip solution improves timing budgets by eliminating
the multiple device solution with their corresponding large
part-to-part skew.
鈥?> 2GHz f
MAX
(toggle)
鈥?< 35ps max. ch-ch skew
s
Low voltage operation: 2.5V, 3.3V
s
Temperature range: 鈥?0
擄
C to +85
擄
C
s
Output enable pin
s
Available in a 64-Pin EPAD-TQFP
PIN CONFIGURATION
VCCO
/Q6
Q6
/Q5
Q5
/Q4
Q4
/Q3
Q3
/Q2
Q2
/Q1
Q1
/Q0
Q0
VCCO
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
VCCO
NC
NC
VCCI
LVDS_CLK
/LVDS_CLK
CLK_SEL
LVPECL_CLK
/LVPECL_CLK
GND
OE
NC
NC
/Q21
Q21
VCCO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
VCCO
Q7
/Q7
Q8
/Q8
Q9
/Q9
Q10
/Q10
Q11
/Q11
Q12
/Q12
Q13
/Q13
VCCO
APPLICATIONS
s
High-performance PCs
s
Workstations
s
Parallel processor-based systems
s
Other high-performance computing
s
Communications
64-Pin
EPAD-TQFP
(Top View)
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
VCCO
/Q20
Q20
/Q19
Q19
/Q18
Q18
/Q17
Q17
/Q16
Q16
/Q15
Q15
/Q14
Q14
VCCO
Rev.: A
Amendment: /0
1
Issue Date: September 2001

SY89825UHI 產(chǎn)品屬性

  • 160

  • 集成電路 (IC)

  • 時鐘/計時 - 時鐘緩沖器，驅(qū)動器

  • Precision Edge®

  • 扇出緩沖器（分配），多路復用器，變換器

  • 1

  • 2:22

  • 是/是

  • LVDS，LVPECL

  • LVPECL

  • 2GHz

  • 2.37 V ~ 3.6 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 64-TQFP 裸露焊盤

  • 64-EP-TQFP

  • 托盤

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