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1:4 TTL/CMOS Fanout Buffer and Line Driver/Pulse Distribution Amplifier
1:4 TTL/CMOS Fanout Buffer and Line Driver/Pulse Distribution Amplifier - Image 2
1:4 TTL/CMOS Fanout Buffer and Line Driver/Pulse Distribution Amplifier - Image 3
1:4 TTL/CMOS Fanout Buffer and Line Driver/Pulse Distribution Amplifier - Image 4

1:4 TTL/CMOS Fanout Buffer and Line Driver/Pulse Distribution Amplifier

    Original price was: $329.99.Current price is: $102.99.

    Applications:

    TTL/CMOS Clock Distribution
    1:4 Fanout Line Drivers
    1 PPS Distribution/IRIG-B Distribution
    High Speed Digital Communications System Testing
    Essential Lab Tool

    Features:

    fmax > 100 MHz
    Drives 100 ft of cable @ 80 MHz
    2 ns Typical Output Rise & Fall Times
    TTL Compatible 50 Ω or 1 kΩ Input
    500 ps typical channel to channel skew
    Four in-phase 50 Ω TTL…

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    SKU: 7qlenve

    Applications:

    • TTL/CMOS Clock Distribution
    • 1:4 Fanout Line Drivers
    • 1 PPS Distribution/IRIG-B Distribution
    • High Speed Digital Communications System Testing
    • Essential Lab Tool

    Features:

    • fmax > 100 MHz
    • Drives 100 ft of cable @ 80 MHz
    • 2 ns Typical Output Rise & Fall Times
    • TTL Compatible 50 Ω or 1 kΩ Input
    • 500 ps typical channel to channel skew
    • Four in-phase 50 Ω TTL Outputs
    • BNC or SMA I/O Connectors
    • DC Coupled I/O’s
    • Self-contained 1.3 x 2.9 x 2.9-in unit includes an AC/DC Adapter

    Description

    The PRL-414B is a 1:4 fanout 50 Ω TTL Line Driver/Pulse Distribution Amplifier.  It is intended for distribution of high-speed clock and logic signals to multiple loads via long lines.  The 50 Ω back-terminated outputs can drive long lines with or without 50 Ω load terminations; With 50 Ω load terminations, however, all outputs of the PRL-414B can drive 100 ft of 50 Ω cables at clock rates greater than 80 MHz.  In one important application, the PRL-414B is used for distributing a precision clock signal to a number of test stations in the lab.

    The input resistance of the PRL-414B can be selected to be either 50 Ω or 1 kΩ by a switch.  The 1 kΩ-input is desirable when interfacing with low power circuits.  All I/Os are DC coupled and have BNC or SMA connectors.

    The PRL-414B is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and is supplied with a ±8.5 V/±1.8 A AC/DC Adapter.  A maximum of four units can share a single AC/DC adapter using the PRL-730 voltage distribution module.  If mounting is needed, a pair of the #35001420 mounting brackets can accommodate any two PRL modules of the same length.  

    A block diagram showing the equivalent input and output circuits of the PRL-414B is shown in Fig. 1.

    PRL-350TTL

    Fig. PRL-414B Block Diagram

    Application Notes:

    Driving the input of the PRL-414B with a sine wave:

     

    Related Products for PRL-414B

    Crystal Clock Sources

    • PRL-171, Fanout Crystal Clock Source
    • PRL-172, Four-Phase Crystal Clock Source (f, f/2, f/4, f/8)
    • PRL-173, Two-Phase Crystal Clock Source (f, f/5)

    RF Switches & Scanners

    Frequency Dividers

    • PRL-220A, Four Phase Frequency Divider (f/2, f/4, f/8, f/16)
    • PRL-240A, Two Phase Frequency Divider (f/2, f/10)

    Comparators/Sinewave Convertors

    Logic Level Translators

    PRL-470 High Speed Line Driver and Level Translator

    Accessories

    • Mounting Brackets
    • Extra AC/DC Adapters (one included with unit)
    • Voltage Distribution Modules, for sharing AC adapters among several modules
    • Cables

    SPECIFICATIONS (0° C ≤ TA ≤ 35° C)*

    Symbol Parameter Min Typ Max Unit Comments
    RIN LO Input Resistance Low Range 49.5 50 50.5 Ω
    RIN HI Input Resistance High Range 990 1000 1010 Ω
    ROUT Output Resistance 50 Ω
    VIL TTL Input Low Level -0.5 0 0.5 V
    VIH TTL Input High Level 2.0 2.4 5.0 V
    VOL TTL Output Low Level 0 0.25 0.5 V RL=50 Ω
    VOH1 TTL Output High Level 2.2 2.5 V RL=50 Ω @ DC
    VOH2 TTL Output High Level 4.4 5 V RL=1 MΩ @ DC
    IDC1 DC Input Currents 280 350 mA f ≤ 100 MHz
    IDC2 DC Input Currents 220 250 mA f =50 MHz sq. wave(1)
    VDC DC Input Voltages 7.5 8.5 12 V
    VAC AC/DC Adapter Input Voltage 103 115 127 V
    TPLH Propagation Delay to output ↑ 10 12 ns
    TPHL Propagation Delay to output ↓ 8 12 ns
    tr Rise Time (10%-90%) 2.2 3 ns f =50 MHz sq. wave
    tf Fall Time (10%-90%) 1.8 3 ns f =50 MHz sq. wave
    TSKEW Skew between any 2 outputs 500 1500 ps f =50 MHz sq. wave
    FMAX1 Max. Clock Frequency(2) 100 120 MHz RG58C/U Cable length =3 ft
    FMAX2 Max. Clock Frequency(3) 80 RG58C/U Cable length =100 ft
    PWMIN Min. Pulse Width 4 ns ↑ Input
    PWMIN Min. Pulse Width 6 ns ↓ Input
    Size 1.3 x 2.9 x 2.9 in
    Weight 5 Oz Excluding AC adapter
    Shipping Weight 4 lb Including AC adapter
    Unless otherwise specified, dynamic measurements are made with all outputs terminated into 50 Ω.
    Notes:
    (1) For sharing a single PRL-760E, ±8.5 V ±1.8 A AC/DC adapter, the total current should not exceed 1.8 A.
    (2) fMAX should not exceed 120 MHz; otherwise, damage of the unit due to overheating may result.
    (3) fMAX2 is measured by connecting a second PRL-414B at the end of the 100 ft. cable.

    While we believe these models to be accurate, no representations are made as to accuracy or suitability for any application:

    PRL-414B (BNC I/Os):

    PRL-414B-SMA (SMA I/Os):

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