74LVCZ161284A datasheet(7/12 Pages) STMICROELECTRONICS

Part #	74LVCZ161284A

Description	LOW VOLTAGE HIGH SPEED IEEE 1284 TRANSCEIVER WITH ERROR-FREE POWER-UP

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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7 / 12 page

74LVCZ161284A

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TEST CIRCUIT

CL = 50 pF or equivalent (includes jig and probe capacitance)

RL = R1 = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

WAVEFORM 1: ERROR-FREE CIRCUIT TIMING CHART (f=1MHz; 50% duty cycle)

TEST

tPHL (A1-A8 to B1-B8, A9-A13 to Y9-Y13, PLHIN to PLH) (see waveform 2)

Open

VCC

tPLH (A1-A8 to B1-B8, A9-A13 to Y9-Y13, PLHIN to PLH, HD to B1-B8, Y9-Y13, PLH)

(see waveform 2)

Open

GND

tPHL, tPLH (B1-B8 to A1-A8, C14-C17 to A14-A17, HLHIN to HLH) (see waveform 3)

Open

GND

tr, tf (A1-A8 to B1-B8, A9-A13 to Y9-Y13) (see waveform 2)

Open

VCC

GND

tPLZ (DIR to A1-A8) (see waveform 5)

GND

tPHZ (DIR to A1-A8) (see waveform 5)

Open

GND

tPZL (DIR to A1-A8) (see waveform 4)

1.4V

GND

tPZH (DIR to A1-A8) (see waveform 4)

4.4V

GND

tPLZ (DIR to B1-B8) (see waveform 5)

GND

tPHZ (DIR to B1-B8) (see waveform 5)

Open

GND

74LVCZ161284A Datasheet(PDF) 7 Page - STMicroelectronics