|
| |
PRL-420ND/PD Specifications
|
(0° C ≤ TA ≤ 35° C)*
|
| Symbol | Parameter | PRL-420ND | PRL-420PD | Unit |
|---|
| Min | Typ | Max | Min | Typ | Max |
|---|
| Rin | Input Resistance | 49.5 | 50 | 50.5 | 49.5 | 50 | 50.5 | Ω |
| Rout | Output Resistance | NPN emitter | 49.5 | 50 | 50.5 | Ω |
| VTosH | Input Threshold
Voltage (High) | 1.4 | 1.5 | 1.6 | 1.4 | 1.5 | 1.6 | V |
| VTosL | Input Threshold
Voltage (Low) | 0.9 | 1 | 1.1 | 0.9 | 1 | 1.1 | V |
| VoL | Output Low Level | -1.85 | -1.7 | -1.55 | 3.2 | 3.4 | 3.5 | V |
| VoH | Output High Level | -1 | -0.8 | -0.7 | 3.9 | 4.1 | 4.3 | V |
| IDC | DC Input Current | | 35
-132 | 45
-145 | | 180
-315 | 200
335 | mA |
| VDC | DC Input Voltage |
±7.5 |
±8.5 |
±12 |
±7.5 |
±8.5 |
±12 | V |
| VAC | AC/DC
Adapter Input Voltage | 103 | 115 | 127 | 103 | 115 | 127 | V |
| tPLH | Propagation Delay to output | | 1.5 | | | 2 | | ns |
| tPHL | Propagation Delay to output | | 1.5 | | | 2 | | ns |
| tr/tf(1) | Rise/Fall Times (20%-80%) | | 750 | 850 | | 1100 | 1250 | ps |
| tSKEW | Skew: Vo↑↔Vo↓ | | 200 | 500 | | 200 | 500 | ps |
| tSKEW | Skew: Vo1↑↔ Vo2↑ | | 200 | 500 | | 200 | 500 | ps |
fMAX(2)
VTosH | Max Clock Frequency
Input Threshold Voltage (High) | 200 | 300 | | 200 | 300 | | MHz |
fMAX(2)
VTosL | Max Clock Frequency
Input Threshold Voltage (Low) | 300 | 400 | | 300 | 400 | | MHz |
| | Size | 1.3 x 2.9 x 3.9 | 1.3 x
2.9 x 3.9 | in. |
| | Shipping
weight, incl. AC adapter | 3 | 3 | lb. |
|
*Unless otherwise specified, dynamic measurements are made with all outputs
terminated into 50 Ω
/-2 V for PRL420ND and 50 Ω/3 V for PRL-420PD.
|
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). fMAX for the PRL-420ND is measured by connecting its inputs to the
PRL-450ND, NECL to TTL Logic Level Translator, and its outputs to the
÷2 differential inputs of the PRL-255N NECL frequency divider. The outputs of the PRL- 255N are then measured using the
PRL-550NQ4X, four channel NECL
Terminator, connected to a 50 Ω input sampling 'scope. Similarly, fMAX for the
PRL-420PD is measured using the PRL-450PD as the input driver, and its outputs are connected to the differential inputs of the
PRL-255P PECL frequency divider. The outputs of the PRL 255P are then measured using the
PRL-550PQ4X, four channel PECL Terminators, connected to a
50 Ω input sampling 'scope.
|
|
|
