ACS8530T Semtech Corporation, ACS8530T Datasheet - Page 137

• Manufacturer Part Number: ACS8530T
• Description: Synchronous Equipment Timing Source for Stratum 2/3E Systems
• Manufacturer: Semtech Corporation

Table 37 DC Characteristics: PECL Input/Output Port (cont...)
Notes: (i) Unused differential input ports should be left floating and set in LVDS mode, or the positive and negative inputs tied to V
Figure 23 Recommended Line Termination for PECL Input/Output Ports
Revision 3.02/November 2005 © Semtech Corp.
n x 8 kHz,
1.544/2.048 MHz,
6.48 MHz,
19.44 MHz,
38.88 MHz,
51.84 MHz,
77.76 MHz or
155.52 MHz
n x 8 kHz,
1.544/2.048 MHz,
6.48 MHz,
19.44 MHz,
38.88 MHz,
51.84 MHz,
77.76 MHz or
155.52 MHz
ADVANCED COMMUNICATIONS
Across all operating conditions, unless otherwise stated
PECL Input High Voltage
Single-ended Input (Note (iii))
Input High Current
Input Differential Voltage V
Input Low Current
Input Differential Voltage V
PECL Output Low Voltage (Note (iv))
PECL Output High Voltage (Note (iv))
PECL Output Differential Voltage (Note (iv))
(iii) Unused differential input terminated to V
(iv) With 50
(ii) Assuming a differential input voltage of at least 100 mV.
respectively.
Parameter
Ω
Z
Z
Z
Z
O
O
O
O
load on each pin to V
= 50Ω
= 50Ω
= 50Ω
= 50Ω
ID
ID
= 1.4V
= 1.4V
130 Ω
130 Ω
82 Ω
82 Ω
DD
V
V
-2 V, i.e. 82
DD
GND
DD
GND
V
130 Ω
82 Ω
130 Ω
82 Ω
V
V
Symbol
V
ILPECL_S
I
I
IHPECL
OHPECL
ODPECL
ILPECL
OLPECL
DD
-1.4 V.
Ω
I5POS
I5NEG
I6POS
I6NEG
Z
V
n
to GND and 130
O
DD
= Transmission line Impedance
= +3.3 V
= Integer 1 to 12,500
FINAL
Page 137
TO6POS
TO6NEG
TO7POS
TO7NEG
Minimum
V
V
V
DD
DD
DD
580
-10
-10
-2.10
-1.25
-1.3
Ω
to V
Z
Z
Z
Z
O
O
O
O
DD
= 50Ω
= 50Ω
= 50Ω
= 50Ω
.
Typical
130 Ω
130 Ω
-
-
-
-
-
-
82 Ω
82 Ω
V
V
GND
GND
DD
DD
Maximum
ACS8530 SETS
V
V
V
DD
DD
DD
130 Ω
130 Ω
82 Ω
82 Ω
+10
+10
900
-1.62
-0.88
-0.5
Fully
Programmable
Output Frequencies
Fully
Programmable
Output Frequencies
F8530D_024PECL_06
DATASHEET
www.semtech.com
DD
Units
mV
µA
µA
V
V
V
and GND