MC74LCX16244 datasheet(6/8 Pages) ONSEMI

Part #	MC74LCX16244

Description	Low?뭋oltage CMOS 16?묪it Buffer With 5 V?뭈olerant Inputs and Outputs (3?뭆tate, Non?묲nverting)

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MC74LCX16244

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WAVEFORM 1 − PROPAGATION DELAYS

tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns

VCC

0 V

VOH

VOL

Dn

On

tPLH

tPHL

WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns

0 V

OEn

On

tPZH

tPHZ

tPZL

tPLZ

On

Vmo

Vmi

Vmo

Figure 3. AC Waveforms

Vmi

VOH

VHZ

VOL

VCC

VLZ

Table 2. AC WAVEFORMS

Symbol

VCC

3.3 V

± 0.3 V

2.7 V

2.5 V

+ 0.2 V

Vmi

1.5 V

VCC / 2

Vmo

1.5 V

VCC / 2

VHZ

VOL + 0.3 V

VOL + 0.15 V

VLZ

VOH − 0.3 V

VOH − 015 V

OPEN

PULSE

GENERATOR

RT

DUT

VCC

RL

R1

CL

6 V or VCC x 2

GND

Figure 4. Test Circuit

Table 3. TEST CIRCUIT

TEST

SWITCH

tPLH, tPHL

Open

tPZL, tPLZ

6 V at VCC = 3.3 0.3 V

6 V at VCC = 2.5 0.2 V

Open Collector/Drain tPLH and tPHL

6 V

tPZH, tPHZ

GND

CL = 50 pF at VCC = 3.3 0.3 V or equivalent (includes jig and probe capacitance)

CL = 30 pF at VCC = 2.5 0.2 V or equivalent (includes jig and probe capacitance)

RL = R1 = 500 W or equivalent

RT = ZOUT of pulse generator (typically 50 W)

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