74VCXH245 datasheet(6/8 Pages) ONSEMI

Part #	74VCXH245

Description	Low-Voltage 1.8/2.5/3.3 V 8-Bit Transceiver

PDF	8 Pages

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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74VCXH245

http://onsemi.com

WAVEFORM 1 − PROPAGATION DELAYS

tR = tF = 2.0 ns, 10% to 90%; f = 1 MHz; tW = 500 ns

VIH

0 V

VOH

VOL

An, Bn

Bn, An

tPHL

tPLH

WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.0 ns, 10% to 90%; f = 1 MHz; tW = 500 ns

VIH

0 V

≈ 0V

OEn, T/Rn

An, Bn

tPZH

≈ VCC

tPHZ

tPZL

tPLZ

An, Bn

Figure 3. AC Waveforms

VOH

VOL

VCC

Symbol

3.3 V

± 0.3 V

2.5 V

± 0.2 V

1.8 V

± 0.15 V

VIH

2.7 V

VCC

1.5 V

VCC/2

VOL + 0.3 V

VOL + 0.15 V

VOH − 0.3 V

VOH − 0.15 V

OPEN

PULSE

GENERATOR

DUT

VCC

6 V or VCC × 2

GND

TEST

SWITCH

tPLH, tPHL

Open

tPZL, tPLZ

6 V at VCC = 3.3 ± 0.3 V;

VCC× 2 at VCC = 2.5 ± 0.2 V; 1.8 V ± 0.15 V

tPZH, tPHZ

GND

CL = 30 pF or equivalent (Includes jig and probe capacitance)

RL = 500 W or equivalent

RT = ZOUT of pulse generator (typically 50 W)

Figure 4. Test Circuit

74VCXH245 Datasheet(PDF) 6 Page - ON Semiconductor

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