LMH0303 Datasheet, PDF (3/14 Pages) National Semiconductor (TI) – 3 Gbps HD/SD SDI Cable Driver with Cable Detect

AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Symbol Parameter
Conditions
Reference
Min
DR_SDI
t_jit
Input Data Rate
Additive Jitter
2.97 Gbps
1.485 Gbps
SDI, SDI
SDO, SDO
270 Mbps
t_r,t_f
Output Rise Time, Fall Time
SD/HD = 0, 20% – 80%,
SD/HD = 1, 20% – 80%
400
Mismatch in Rise/Fall Time
Duty Cycle Distortion
SD/HD = 0, 2.97 Gbps,
(Note 4)
SD/HD = 0, 1.485 Gbps,
(Note 4)
SD/HD = 1, (Note 4)
t_OS
Output Overshoot
SD/HD = 0, (Note 4)
SD/HD = 1, (Note 4)
RL_SDO Output Return Loss
5 MHz - 1.5 GHz, (Note 5)
15
1.5 GHz - 3.0 GHz, (Note 5)
10
SMBus AC Specifications
f_SMB
Bus Operating Frequency
10
t_BUF
Bus free time between Stop and
4.7
Start Condition
t_HD:STA Hold time after (repeated) Start At I_SPULLUP = MAX
Condition. After this period, the
4.0
first clock is generated.
t_SU:STA Repeated Start Condition setup
4.7
time
t_SU:STO Stop Condition setup time
4.0
t_HD:DAT Data hold time
300
t_SU:DAT Data setup time
250
t_LOW
Clock low period
4.7
t_HIGH
Clock high period
4.0
t_F
Clock/Data Fall Time
t_R
Clock/Data Rise Time
t_POR
Time in which device must be
operational after power on
Typ
Max Units
2970 Mbps
20
ps_P-P
18
ps_P-P
15
ps_P-P
90
130
ps
800
ps
30
ps
27
ps
30
ps
100
ps
10
%
8
%
dB
dB
100
kHz
µs
µs
µs
µs
ns
ns
µs
50
µs
300
ns
1000
ns
500
ms
Note 1: "Absolute Maximum Ratings" are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of
these maximums shall not be construed to imply that the device can or should be operated at or beyond these values. The table of "Electrical Characteristics"
specifies acceptable device operating conditions.
Note 2: Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated referenced to
V_EE = 0 Volts.
Note 3: Typical values are stated for V_CC = +3.3V and T_A = +25°C.
Note 4: Specification is guaranteed by characterization.
Note 5: Output return loss is dependent on board design. The LMH0303 meets this specification on the SD303 evaluation board.
Note 6: Recommended value — Parameter not tested.
Note 7: Recommended maximum capacitive load per bus segment is 400 pF.
3
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