Phillips 726 ECL/NIM/TTL Translator
OVERVIEW
FEATURES
- Converts TTL, NIM and ECL Logic Families
- High Density - 16 Independent Channels
- DC - 150 MHz for NIM and ECL Translation
- DC - 100 MHz for TTL Translation
- Low Power - Meets Requirements for Single NIM Slot
- Available in CAMAC Packaging Model 7126
DESCRIPTION
The model 726 is a 16-channel level translator packaged in a
single width NIM module. It simultaneously converts in any direction
between NIM, TTL and ECL logic families. In addition, a logical "OR"
is possible for the ECL input and the NIM/TTL input. The input to
output is direct coupled with the output duration equal to the input
duration. Each channel has a single input connector which accepts a
fast negative NIM level with 50 ohm input impedance and a positive
TTL level with 500 ohms impedance. This produces a positive TTL
output capable of driving a 50 ohm load and a bridged NIM output that
drives two 50 ohm loads. The NIM output stage is current-switching
which allows pulse clipping and is protected from damage due to
shorted cables.
Input Characteristics
- NIM/TTL 16 inputs, one per channel, LEMO style connector:
- accepts both negative NIM or positive TTL pulses or levels.
NIM: 50 ohms impedance +/-10%; -500 mV threshold; input protected
to +/-8 VDC.
TTL: 500 ohms impedance +/-10%; +1.2 Volt threshold; input
protected to +/-8 VDC.
- ECL Input 16 inputs, one per channel:
- 2 x 17-pin header with lock and eject
feature; accepts complementary ECL inputs; removable 110 ohm
input termination; 200 mV differential threshold.
Output Characteristics
- NIM Outputs, two NIM outputs per channel:
- bridged -32 mA current switching, LEMO style connectors;
delivers one double amplitude NIM level or two normal NIM
levels into 50 ohms; 1.5 nsec rise and fall times.
- TTL Output, one TTL output per channel, LEMO style connector:
- sources 45 mA to drive 50 ohm load or 1000 standard TTL loads,
sink current of 100 mA; able to drive 100 standard TTL loads.
3.5 nsec rise and fall times.
- ECL Output, complementary ECL, one per channel:
- 2 x 17 pin header with lock and eject feature;
drives two 110 ohm ECL loads or up to 30 daisychained loads.
Normal ECL levels of -800 mV and -1.7 Volts, 2 nsec
rise and fall times.
General Characteristics
- Rate
- DC to 150 MHz for NIM and ECL translation,
DC to 100 MHz for TTL translation.
- Minimum 4 nsec for NIM and ECL translation,
- Pulse Widths 7 nsec for TTL translation.
- Delay
- NIM, TTL or ECL input to NIM or ECL output = 5 nsec.
NIM, TTL or ECL input to TTL output = 10 nsec.
- Power Requirements:
- + 6V @ 350 mA, - 6V @ 400 mA
+ 12V @ 100 mA, - 12V @ 170 mA
+ 24V @ 60 mA, - 24V @ 80 mA
110 VAC @ 40 mA
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