
Virtex-E 1.8 V Field Programmable Gate Arrays
R
DS022-3 (v3.0) March 21, 2014
Module 3 of 4
Production Product Specification
5
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
LVDS DC Specifications
LVPECL DC Specifications
These values are valid at the output of the source termination pack shown under LVPECL, with a 100
Ω differential load only.
The VOH levels are 200 mV below standard LVPECL levels and are compatible with devices tolerant of lower common-mode
ranges. The following table summarizes the DC output specifications of LVPECL.
CTT
– 0.5
VREF – 0.2
VREF + 0.2
3.6
VREF – 0.4
VREF + 0.4
8
–8
AGP
– 0.5
VREF – 0.2
VREF + 0.2
3.6
10% VCCO
90% VCCO
Note 2
Notes:
1.
VOL and VOH for lower drive currents are sample tested.
2.
Tested according to the relevant specifications.
3.
DC input and output levels for HSTL18 (HSTL I/O standard with VCCO of 1.8 V) are provided in an HSTL white paper on
DC Parameter
Symbol
Conditions
Min
Typ
Max
Units
Supply Voltage
VCCO
2.375
2.5
2.625
V
Output High Voltage for Q and Q
VOH
RT = 100 Ω across Q and Q signals
1.25
1.425
1.6
V
Output Low Voltage for Q and Q
VOL
RT = 100 Ω across Q and Q signals
0.9
1.075
1.25
V
Differential Output Voltage (Q – Q),
Q = High (Q – Q), Q = High
VODIFF
RT = 100 Ω across Q and Q signals
250
350
450
mV
Output Common-Mode Voltage
VOCM
RT = 100 Ω across Q and Q signals
1.125
1.25
1.375
V
Differential Input Voltage (Q – Q),
Q = High (Q – Q), Q = High
VIDIFF
Common-mode input voltage = 1.25 V
100
350
NA
mV
Input Common-Mode Voltage
VICM
Differential input voltage =
±350 mV
0.2
1.25
2.2
V
Note: Refer to the Design Consideration section for termination schematics.
Input/Output
Standard
VIL
VIH
VOL
VOH
IOL
IOH
V, Min
V, Max
V, Min
V, Max
V, Min
mA
DC Parameter
Min
Max
Min
Max
Min
Max
Units
VCCO
3.0
3.3
3.6
V
VOH
1.8
2.11
1.92
2.28
2.13
2.41
V
VOL
0.96
1.27
1.06
1.43
1.30
1.57
V
VIH
1.49
2.72
1.49
2.72
1.49
2.72
V
VIL
0.86
2.125
0.86
2.125
0.86
2.125
V
Differential Input Voltage
0.3
-
0.3
-
0.3
-
V