Advanced Clock Drivers Devices
6 Freescale Semiconductor
MPC9850
Table 8. LVDS DC Characteristics (T
A
= –40°C to 85°C)
Symbol Characteristics Min Typ Max Unit Condition
Differential LVDS Clock Outputs (QC0, QC0
and QC1, QC1) for V
DD
= 3.3 V ± 5%
V
PP
Output Differential Voltage
(1)
(peak-to-peak) (LVDS)
1. V
PP
is the minimum differential input voltage swing required to maintain AC characteristics including t
PD
and device-to-device skew.
100 400 mV
V
OS
Output Offset Voltage (LVDS) 1050 1600 mV
Table 9. LVPECL DC Characteristics (T
A
= –40°C to 85°C)
(1)
1. AC characteristics are design targets and pending characterization.
Symbol Characteristics Min Typ Max Unit Condition
Differential LVPECL Clock Inputs (CLK1, CLK1
) for V
DD
= 3.3 V ± 0.5%
V
PP
Differential Voltage
(2)
(peak-to-peak) (LVPECL)
2. V
PP
is the minimum differential input voltage swing required to maintain AC characteristics including t
PD
and device-to-device skew.
250 mV
V
CMR
Differential Input Crosspoint Voltage
(3)
(LVPECL)
3. V
CMR
(AC) is the crosspoint of the differential input signal. Normal AC operation is obtained when the crosspoint is within the V
CMR
(AC)
range and the input swing lies within the V
PP
(AC) specification. Violation of V
CMR
(AC) or V
PP
(AC) impacts the device propagation delay,
device and part-to-part skew.
1.0 V
DD
– 0.6 V
Table 10. LVCMOS I/O DC Characteristics (T
A
= –40°C to 85°C)
Symbol Characteristics Min Typ Max Unit Condition
LVCMOS for V
DD
= 3.3 V ± 5%
V
IH
Input High Voltage 2.0 V
DD
+ 0.3 V LVCMOS
V
IL
Input Low Voltage 0.8 V LVCMOS
I
IN
Input Current
(1)
1. Inputs have pull-down resistors affecting the input current.
± 200 µAV
IN
= V
DDL
or GND
LVCMOS for V
DD
= 3.3 V ±5%, V
DDOA
= 3.3 V ± 5 and V
DDOB
= 3.3 V ± 5%
V
OH
Output High Voltage 2.4 V I
OH
= –24 mA
V
OL
Output Low Voltage 0.5 V I
OL
= 24 mA
Z
OUT
Output Impedance 14 – 17 Ω
LVCMOS for V
DD
= 3.3 V ±5%, V
DDOA
= 2.5 V ± 5% and V
DDOB
= 2.5 V ± 5%
V
OH
Output High Voltage 1.9 V I
OH
= –15 mA
V
OL
Output Low Voltage 0.4 V I
OL
= 15 mA
Z
OUT
Output Impedance 18 – 22 Ω