제품소개

제품소개

NI-9402 / 779987-01

ㆍ▷ LVTTL, 4 양방향 채널, 55 ns C 시리즈 디지털 모듈

ㆍ▷ BNC connectivity

ㆍ▷ CompactDAQ counter compatibility

ㆍ▷ Individually configurable channel directions

Data sheet

Features
• BNC connectivity
• CompactDAQ counter compatibility
• Individually configurable channel directions

Specification & Introduction
 Input/Output Characteristics
• Number of channels 4 
    DIO channels
• Default power-on line direction 
    Input
• Input/output type 
    LVTTL, single-ended
• Digital logic levels
    Maximum input voltage 
        5.25 V
    Input high, VIH 
        2 V minimum
    Input low, VIL 
        0.8 V maximum
    Output high, VOH (3.4 V maximum)
        Sourcing 100 µA 
            3.0 V minimum
        Sourcing 2 mA 
            2.8 V minimum
    Output low, VOL
        Sinking 100 µA 
            0.1 V maximum
        Sinking 2 mA 
            0.3 V maximum
• Maximum I/O switching frequency
    4 channels 
        16 MHz
    2 channels 
        20 MHz
• I/O propagation delay1,2 
    55 ns maximum, 18 ns typical
• I/O pulse width distortion2 
    25 ns maximum
• Input low current, IIL (VIN = 0 V) 
    -55 µA maximum
• Input high current, IIH (VIN = 4.5 V) 
    150 µA maximum
• Input impedance
    Input capacitance 
        50 pF maximum
    Input resistance 
        49 kΩ minimum
• Input rise/fall rate 
    10 ns/V maximum
• Input protection 
    ±30 V maximum on one channel at a time
• MTBF 
    1,482,777 hours at 25 °C; Bellcore Issue 2,
    Method 1, Case 3, Limited Part Stress Method

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