MPC990 MPC991
TIMING SOLUTIONS
BR1333 — Rev 6
5 MOTOROLA
ECL DC CHARACTERISTICS (TA = 0° to 70°C, V
CCA
= V
CCI
= V
CCO
= 0V, GNDI = –3.3V ±5%, Note 1.)
0°C 25°C 70°C
Symbol Characteristic Min Typ Max Min Typ Max Min Typ Max Unit
V
OH
Output HIGH Voltage –1.3 –0.7 –1.3 –1.0 –0.7 –1.3 –0.7 V
V
OL
Output LOW Voltage –2.0 –1.4 –2.0 –1.7 –1.4 –2.0 –1.4 V
V
IH
Input HIGH Voltage –1.1 –0.9 –1.1 –0.9 –1.1 –0.9 V
V
IL
Input LOW Voltage –1.8 –1.5 –1.8 –1.5 –1.8 –1.5 V
V
PP
Minimum Input Swing 500 500 500 mV
V
CMR
Common Mode Range V
CC
–1.3V
V
CC
–0.5V
V
CC
–1.3V
V
CC
–0.5V
V
CC
–1.3V
V
CC
–0.5V
V
I
IH
Input HIGH Current 150 150 150 µA
I
GNDI
Power Supply Current 200 240 200 240 200 240 mA
1. Refer to Motorola Application Note AN1545/D “
Thermal Data for MPC Clock Drivers
” for thermal management guidelines.
PECL DC CHARACTERISTICS (TA = 0° to 70°C, V
CCA
= V
CCI
= V
CCO
= 3.3V ±5%, GNDI = 0V, Note 2.)
0°C 25°C 70°C
Symbol Characteristic Min Typ Max Min Typ Max Min Typ Max Unit
V
OH
Output HIGH Voltage (Note 3.) 2.0 2.6 2.0 2.3 2.6 2.3 2.6 V
V
OL
Output LOW Voltage (Note 3.) 1.3 1.9 1.3 1.6 1.9 1.3 1.9 V
V
IH
Input HIGH Voltage (Note 3.) 2.2 2.4 2.2 2.4 2.2 2.4 V
V
IL
Input LOW Voltage (Note 3.) 1.5 1.8 1.5 1.8 1.5 1.8 V
V
PP
Minimum Input Swing 500 500 500 mV
V
CMR
Common Mode Range V
CC
–1.3V
V
CC
–0.5V
V
CC
–1.3V
V
CC
–0.5V
V
CC
–1.3V
V
CC
–0.5V
V
I
IH
Input HIGH Current 150 150 150 µA
I
GNDI
Power Supply Current 200 240 200 240 200 240 mA
2. Refer to Motorola Application Note AN1545/D “
Thermal Data for MPC Clock Drivers
” for thermal management guidelines.
3. These values are for VCC = 3.3V . Level Specifications will vary 1:1 with VCC.
AC CHARACTERISTICS (TA = 0° to 70°C, V
CCA
= V
CCI
= V
CCO
= 3.3V ±5%, Termination of 50Ω to VCC – 2.0V)
Symbol Characteristic Min Typ Max Unit Condition
f
xtal
Crystal Oscillator Frequency 10 25 MHz
tr, t
f
Output Rise/Fall Time 0.2 1.0 ns 20% to 80%
t
pw
Output Duty Cycle 47.5 50 52.5 %
t
os
Output-to-Output Skew Same Frequency
Different Frequencies
150
250
250
350
ps
f
VCO
PLL VCO Lock Range VCO_Sel = ‘0’
VCO_Sel = ‘1’
400
200
800
400
MHz FB ÷8 to ÷32 (Note 4.)
FB ÷4 to ÷32
t
pd
Ref to Feedback Offset 75 250 425 ps f
ref
= 50MHz (Note 5.)
f
max
Maximum Output Frequency Qa,Qb,Qc (÷2)
Qa,Qb,Qc (÷4)
Qa,Qb,Qc (÷6)
Qa,Qb,Qc (÷8)
400
200
133
100
MHz
t
jitter
Cycle–to–Cycle Jitter (Peak–to–Peak) ±50 ps
t
lock
Maximum PLL Lock Time 10 ms
4. With VCO_Sel = ‘0’, the PLL will be unstable with a ÷2, ÷4 or ÷6 feedback ratio. With VCO_Sel = ‘1’, the PLL will be unstable with a ÷2 feedback
ratio.
5. tpd is specified for 50MHz input reference FB ÷8. The window will shrink/grow proportionally from the minimum limit with shorter/longer input
reference periods. The tpd does not include jitter.