參數(shù)資料
型號: MAX9321-MAX9321A
廠商: Maxim Integrated Products, Inc.
英文描述: Differential LVPECL/LVECL/HSTL Receiver/Drivers
中文描述: 差分LVPECL / LVECL / HSTL接收器/驅(qū)動(dòng)器
文件頁數(shù): 7/9頁
文件大?。?/td> 178K
代理商: MAX9321-MAX9321A
Detailed Description
The MAX9321/MAX9321A are low-skew differential
receiver/drivers designed for clock and data distribu-
tion. For interfacing to differential HSTL and LVPECL
signals, these devices operate over a +2.25V to +3.8V
supply range, allowing high-performance clock and
data distribution in systems with a nominal +2.5V or
+3.3V supply. For differential LVECL operation, these
devices operate from a -2.25V to -3.8V supply.
Inputs
The differential input can be configured to accept a sin-
gle-ended input when operating at approximately V
CC
-
V
EE
= 3.0V to 3.8V. This is accomplished by connect-
ing the on-chip reference voltage, V
BB
, to an input as a
reference. For example, the differential D,
D
input is
converted to a noninverting, single-ended input by con-
necting V
BB
to
D
and connecting the single-ended
input to D. An inverting input is obtained by connecting
V
BB
to D and connecting the single-ended input to
D
.
With the differential input configured as single ended
(using V
BB
), the single-ended input can be driven to
V
CC
and V
EE
or with a single-ended LVPECL/LVECL
signal.
When the differential input is configured as a single-
ended input (using V
BB
), the approximate supply range
is V
CC
- V
EE
= 3.0V to 3.8V. This is because one of the
inputs must be V
EE
+ 1.2V or higher for proper opera-
tion of the input stage. V
BB
must be at least V
EE
+ 1.2V
because it becomes the high-level input when the other
(single-ended) input swings below it. Therefore, mini-
mum V
BB
= V
EE
+ 1.2V.
The minimum V
BB
output is V
CC
- 1.510V. Substituting
the minimum V
BB
into V
BB
= V
EE
+ 1.2V results in a
minimum supply of 2.71V. Rounding up to a standard
supply gives the single-ended operating supply range
of V
CC
- V
EE
= 3.0V to 3.8V.
M
Differential LVPECL/LVECL/HSTL
Receiver/Drivers
_______________________________________________________________________________________
7
(CONNECTED TO D)
V
IL
V
IH
V
BB
V
OH
- V
OL
V
OH
V
OL
Q
Q
D
D
Figure 1. Switching with Single-Ended Input
0 (DIFFERENTIAL)
80%
20%
80%
20%
0 (DIFFERENTIAL)
V
OH
- V
OL
V
IHD
- V
ILD
V
IHD
V
ILD
V
OH
V
OL
Q
Q
t
PLHD
t
PHLD
t
R
t
F
D
D
(Q) - (Q)
Figure 2. Differential Transition Time and Propagation Delay Timing Diagram
相關(guān)PDF資料
PDF描述
MAX9321EKA-T Differential LVPECL/LVECL/HSTL Receiver/Drivers
MAX9321AESA Differential LVPECL/LVECL/HSTL Receiver/Drivers
MAX9321ESA Differential LVPECL/LVECL/HSTL Receiver/Drivers
MAX9321 Hex Inverters 14-CDIP -55 to 125
MAX9321AEKA-T LJT 2C 2#16 SKT PLUG
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