CXB1585N
Electrical Characteristics Measurement Circuit (See “Fig. 3 Power Supply Circuit” regarding the power supply.)
VI_T
II_T
Measurement device
TTL_IN
TTL_OUT
Io_T
Vo_T
(a) TTL I/O DC characteristics measurement circuit
Measurement
device
Pulse generator
TTL_IN
TTL_OUT
Probe
CL
Oscilloscope
CL = 10pF (including the probe capacitance)
(b) TTL I/O AC characteristics measurement circuit
VI_TE
II_E
Measurement device
A
ECL_IN
ECL_OUT
50Ω
VCCE – 2V
V VO_E
(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
Oscilloscope
50Ω
50Ω
50Ω Transmission Line
VCCE – 2V
VCCE – 2V
CL ≤ 2pF
(input capacitance of the measurement
equipment and floating capacitance)
(d) ECL I/O AC characteristics measurement circuit
Pulse generator
26.5625MHz
Measurement device
VCCE – 2V
Triger
1.0625GBPS
SDIN
SDIN∗
50Ω
SOUT
SOUT∗
1.0625GBPS
50Ω
Oscilloscope
(e) Jitter characteristics measurement circuit
–8–
VCCE – 2V