Electrical Characteristics Measurement Circuit
(See “Fig. 3 Power Supply Circuit” regarding the power supply.)
VI_T
II_T
Measurement device
A
TTL_IN
TTL_OUT
CXB1583Q
IO_T
V VO_T
(a) TTL I/O DC characteristics measurement circuit
Pulse
generator
Measurement device
TTL_IN
TTL_OUT
Probe
CL
Oscilloscope
CL = 10 pF (including the probe capacitance)
(b) TTL I/O AC characteristics measurement circuit
VI_TE
II_E
Measurement device
A
ECL_IN
ECL_OUT
50Ω
V VO_E
VCCE – 2V
(c) ECL I/O DC characteristics measurement circuit
VCCE – 2V
VCCE – 2V
Pulse
generator
50Ω
Measurement device
ECL_IN
ECL_IN∗
ECL_OUT
ECL_OUT∗
50Ω
50Ω
Oscilloscope
50Ω
50Ω Transmission Line
VCCE – 2V
VCCE – 2V
C ≤ 2 pF (input capacitance of the measurement
equipment and floating capacitance)
(d) ECL I/O AC characteristics measurement circuit
6.640625MHz
Pulse pattern generator
265.625MBPS
Measurement device
VCCE – 2V
Triger
SDIN
SDIN∗
50Ω
SOUT
SOUT∗
265.625Mbps
50Ω
Oscilloscope
(e) Jitter characteristics measurement circuit
– 15 –
VCCE – 2V