The PRL-470B is a high speed 50 Ω Line Driver/Level Translator
with independently variable output Hi and Lo levels. It has TTL- and NECL-compatible
inputs. The TTL input has a 50 Ω to ground termination, and the single-ended
NECL input has a 50 Ω/-2 V termination. The TTL and NECL inputs are logically
ORed; therefore a Hi level applied to either input can be used as a gate
signal. The PRL-470B is an improved version of the earlier Model PRL-470A.
The output Hi and Lo levels are independently variable from 0 V to +5 V
and 0 V to -3 V into 50 Ω, respectively, or 0 V to +10 V and 0 V to -6 V
into 1 MΩ. The maximum output peak to peak swing is 8 V into 50 Ω, or 16
V into 1 MΩ. The back-terminated 50 Ω output can drive long 50 Ω lines with
or without load termination. A Normal/Invert switch provides output logic
polarity selection, and an f/2 switch provides square wave output. The 50
Ω TTL input requires less than 1 V for triggering.
The 800 ps rise time output makes the PRL-470B a cost-effective TDR source
for testing cables. Typical maximum clock rate is 300 MHz @3.5 V output
and 250 MHz @5 V output, well suited for testing logic circuits of different
families, amplifiers and many semiconductor devices.
The trigger output generates > 1 V into 50 Ω or > 2 V into high impedance,
and is back-matched with 50 Ω for driving un-terminated loads. The self-contained
1.3 x 2.9 x 8.1-in module is supplied with a ±8.5 V/+17 V AC/DC adapter.
Multiple PRL-470B modules together with other PRL logic function modules,
such as Clock Sources,
Frequency Dividers, Programmable
Delay Lines, Logic Level Translators,
etc., can be rack-mounted for systems test applications. Consult factory
for more information.
**All prices are for U.S. orders only. For export
orders, please add 15%. Prices subject to change without notice. Please
consult factory for additional information at +1-310-515-5330 or