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| |
PRL-255
Specifications
|
| (0° C
≤ TA
≤ 35° C)*
|
|
Symbol |
Parameter |
PRL-255N |
PRL-255P |
Unit |
Comments |
|
Min |
Typ |
Max |
Min |
Typ |
Max |
|
RIN |
Input Resistance |
49.5 |
50 |
50.5 |
49.5 |
50 |
50.5 |
Ω
|
|
|
VTT |
D Input Termination Voltage (fixed) |
-2.2 |
-2 |
-1.8 |
2.7 |
3.0 |
3.3 |
V |
|
|
VT |
D
Input
Termination Voltage (variable) |
-1.17/
-2.2 |
-1.3/
-2 |
-1.43/
-1.8 |
3.33/
2.7 |
3.0/
3.7 |
4.07/
3.3 |
V |
|
|
VIL |
Input Lo Voltage |
-1.95 |
-1.6 |
-1.48 |
3.05 |
3.4 |
3.52 |
V |
|
|
VIH |
Input Hi Voltage |
-1.13 |
-0.9 |
-0.81 |
3.87 |
4.1 |
4.19 |
V |
|
|
VOL |
Output Lo Voltage |
-1.95 |
-1.7 |
-1.48 |
3.0 |
3.15 |
3.3 |
V |
|
|
VOH |
Output Hi Voltage |
-1.13 |
-0.9 |
-0.81 |
3.4 |
3.55 |
3.8 |
V |
|
|
IDC |
DC Input Current |
-265 |
-250 |
|
|
-250 |
-265 |
mA |
|
|
VDC |
DC Input Voltage |
-12 |
-8.5 |
-7.5 |
7.5 |
8.5 |
12 |
V |
|
|
VAC |
AC/DC Adapter Input Voltage |
103 |
115 |
127 |
103 |
115 |
127 |
V |
|
|
tPLH(÷2) |
Propagation Delay to output ↑
|
|
1.1 |
1.5 |
|
1.1 |
1.5 |
ns |
|
|
tPHL(÷2) |
Propagation Delay to output ↓
|
|
1.1 |
1.5 |
|
1.1 |
1.5 |
ns |
|
|
tPLH(÷4) |
Propagation Delay to output ↑
|
|
1.25 |
1.65 |
|
1.25 |
1.65 |
ns |
|
|
tPHL(÷4) |
Propagation Delay to output ↓
|
|
1.25 |
1.65 |
|
1.25 |
1.65 |
ns |
|
|
tr/tf |
Rise/Fall Times (20%-80%) |
|
325 |
425 |
|
325 |
425 |
ps |
Note (1) |
|
tSKEW |
Skew between Q& Q
outputs |
|
20 |
75 |
|
20 |
75 |
ps |
|
|
FMAX |
Max clock frequency |
2.5 |
3.2 |
|
2.5 |
3.2 |
|
GHz |
Note (3) |
|
VCMR |
Common Mode Range |
-2.7 |
|
-0.4 |
2.5 |
|
4.6 |
V |
Note (2) |
| |
Size |
1.3 x
2.9 x 2.2 |
1.3 x
2.9 x 2.2 |
in. |
|
| |
Shipping weight, incl. AC adapter |
3 |
3 |
lb. |
|
|
|
Symbol |
Parameter |
PRL-255CN |
Unit |
Comments |
|
Min |
Typ |
Max |
|
RIN |
Input Resistance |
49.5 |
50 |
50.5 |
Ω
|
|
|
VTH+ |
Preset Positive Threshold Voltage |
+40 |
+50 |
+60 |
mV |
|
|
VTH- |
Preset Negative Threshold Voltage |
-60 |
-50 |
-40 |
mV |
|
|
VTH 0 |
Preset Zero Threshold Voltage |
-5 |
0 |
+5 |
mV |
|
|
VIN Min 1 |
Minimum Input Voltage p-p |
10 |
5 |
|
mV |
0 < f < 300 MHz |
|
VIN Min 2 |
Minimum Input Voltage p-p |
400 |
200 |
|
mV |
300 MHz < f < 2.5 GHz |
|
IDC |
DC Input Current |
|
+35
-310 |
+55
-350 |
mA
mA |
|
|
VDC |
DC Input Voltage |
±7.5 |
±8.5 |
±12 |
V |
|
|
VAC |
AC/DC Adapter Input Voltage |
103 |
115 |
127 |
V |
|
|
tPLH(÷2) |
Propagation Delay to output ↑
|
|
1.8 |
2.2 |
ns |
|
|
tPHL(÷2) |
Propagation Delay to output ↓
|
|
1.8 |
2.2 |
ns |
|
|
tPLH(÷4) |
Propagation Delay to output ↑
|
|
2 |
2.5 |
ns |
|
|
tPHL(÷4) |
Propagation Delay to output ↓
|
|
2 |
2.5 |
ns |
|
|
tr/tf |
Rise/Fall Times (20%-80%) |
|
400 |
600 |
ps |
Note (1) |
|
tSKEW |
Skew between Q& Q
outputs |
|
50 |
150 |
ps |
|
|
FMAX |
Max clock frequency |
2.0 |
2.5 |
|
GHz |
Note (3) |
|
VCMR |
Common Mode Range |
-2.5 |
|
+4 |
V |
|
| |
Size |
1.3 x
2.9 x 3.9 |
in. |
|
| |
Shipping weight, incl. AC adapter |
3 |
lb. |
|
|
* All measurements are made with outputs terminated into 50 Ω/VTT.
Notes:
The output rise and fall times are measured with with all inputs terminated into 50 Ω/VTT. For best performance all outputs should be
terminated into 50 Ω/VTT or else AC- coupled into 50 Ω
loads. If a single output is used, its complement must be terminated; otherwise
output waveform distortion will occur. If one pair of complementary outputs is
used, the other complementary pair may remain unterminated.
Use the PRL-550 Series,
four channel ECL/PECL/LVPECL
Terminators, for the 50 Ω/VTT termination and for
connection of ECL/PECL/LVPECL signals to 50 Ω input oscilloscopes. The
PRL-ACT-50, Dual Channel AC-Coupled 50 Ω
Terminator,
may also be used to provide the 50 Ω/VTT
termination. If preservation of DC levels is not required, then the PRL-SC-104, 0.1
µf DC block or the PRL-ACX-12dB, 12 dB AC-coupled attenuator, may be used to connect the NECL/PECL/LVPECL
outputs to 50 Ω input instruments.
(2). These parameters are not supplied by the device manufacturer and are,
therefore, not guaranteed.
(3). fMAX is measured by AC coupling a sine wave to the
÷2 CLK input using the differential input mode (switch up). The
÷2 and the
÷4 dividers are cascaded, and the
÷8 outputs are then measured. The fMAX measurement is then repeated by clocking
the
÷4 CLK input with the sine wave.
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