The T860 is a compact standalone logic buffer. It incorporates a differential-input comparator and an output driver stage which has adjustable low and high levels and 50 ohm output impedance. Vlow is adjustable from -4 to +4 volts (-2 to +2 into 50 ohms) and Vhigh can be set from -3.5 to +5.2 (-1.75 to 2.6 into 50 ohms.)
The T860 can source up to 100 mA while maintaining an excellent 50 ohm source termination, making it suitable for driving fets, lasers, or other unmatched loads.
FUNCTION | General-purpose, DC coupled discriminator and logic driver |
INPUTS | Polarity: Single-ended (positive or inverting) or differential levels Range: ±50 mV to ±2.5 volts (at either input) Internal Terminations: 50Ω |
THRESHOLD | User adjustable: -2.5 to +2.5 volts |
PROPAGATION DELAY | 1.2 ns, typical (input to main output or TRIG out) |
OUTPUT | V low: adjustable -4 to +4 volts (-2 to +2 volts into 50Ω) V high: adjustable -3.5 to +5.2 volts (-1.75 to +2.6 volts into 50Ω) Max swing: 5.2 volts peak-to-peak (2.6 volts into 50Ω) Max Source Current: ±100 mA Source impedance: 50Ω |
TRIGGER OUTPUT | +0.6 volts into 50Ω, typical (coincident with main output) |
BANDWIDTH | DC to 1 GHz (1 volt peak-to-peak into 50Ω) DC to 500 MHz (2.6 volt peak-to-peak into 50Ω) |
RISETIME | < 200 ps at 1 volt peak-to-peak into 50Ω <280 ps at 2.5 volt peak-to-peak into 50Ω |
FALLTIME | < 200 ps at 1 volt peak-to-peak into 50Ω < 280 ps at 2.5 volt peak-to-peak into 50Ω |
JITTER | < 3 ps RMS |
OPERATING TEMPERATURE | 0 to 60°C; extended MIL/COTS ranges available |
CALIBRATION INTERVAL | One year |
POWER | +12 volts at 0.7 amps, maximum Highland J12 wall-plug adapter recommended |
CONNECTORS | Gold plated SMB In+, In-, TRIG and OUT connectors Front panel test jacks for THR and MON measurement 2.1 mm X 5.5 mm barrel power connector, center positive |
INDICATORS | LEDs: green power on, blue logic input high |
PACKAGING | 4.75" (L) x 4.0" (W) x 1.25" (H) extruded anodized aluminum enclosure Optional T566 mounting flange available |
T860-1: single-channel compact logic buffer and driver with SMB connectors
T860-2: single-channel compact logic buffer and driver with SMA connectors