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FXL2TD245

Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls

ON Semiconductor 

AC Loading and Waveforms

TEST

SIGNAL

VCC

DUT

Rtr1

CL

RL

OPEN

GND

VCC x 2

tPLH, tPHL

tPZH, tPHZ

tPZL, tPLZ

Test

tPLH, tPHL

tPLZ, tPZL

tPHZ, tPZH

AC Load Table

VCCO

1.2V ± 0.1V

1.5V ± 0.1V

1.8V ± 0.15V

2.5V ± 0.2V

3.3V ± 0.3V

Switch

OPEN

VCCO x 2 at VCCO = 3.3 ± 0.3V, 2.5V ± 0.2V,

1.8V ± 0.15V, 1.5V ± 0.1V, 1.2V ± 0.1V

GND

Figure 1. AC Test Circuit

CL

RL

Rtr1

15pF

2kΩ

2kΩ

15pF

2kΩ

2kΩ

15pF

2kΩ

2kΩ

15pF

2kΩ

2kΩ

15pF

2kΩ

2kΩ

DATA

IN

tpxx

DATA

OUT

Vmi

tpxx

VCCI

GND

Vmo VCCO

Input tR = tF = 2.0 ns, 10% to 90%

Input tR = tF = 2.5ns, 10% to 90%, @ VI = 3.0V to 3.6V only

Figure 2. Waveform for Inverting

and Non-Inverting Functions

OUTPUT

CONTROL

tPZL

DATA

OUT

Vmi

tPLZ

Vmo

VCCA

GND

VY

VOL

Input tR = tF = 2.0 ns, 10% to 90%

Input tR = tF = 2.5ns, 10% to 90%, @ VI = 3.0V to 3.6V only

Figure 3. 3-STATE Output Low Enable

and Disable Times for Low Voltage Logic

OUTPUT

CONTROL

DATA

OUT

tPZH

Vmi

tPHZ

Vmo

VCCA

GND

VOH

VX

Input tR = tF = 2.0 ns, 10% to 90%

Input tR = tF = 2.5ns, 10% to 90%, @ VI = 3.0V to 3.6V only

Figure 4. 3-STATE Output High Enable and Disable Times for Low Voltage Logic

VCC

Symbol 3.3V ± 0.3V 2.5V ± 0.2V 1.8V ± 0.15V

Vmi

VCCI / 2

VCCI / 2

VCCI / 2

Vmo

VCCO / 2

VCCO / 2

VCCO / 2

VX

VOH - 0.3V

VOH - 0.15V

VOH - 0.15V

VY

VOL + 0.3V

VOL + 0.15V

VOL + 0.15V

For Vmi : VCCI = VCCA for Control Pins T/R and OE, or VCCA / 2

©2005 Fairchild Semiconductor Corporation

FXL2TD245 Rev. 1.0.4

8

1.5V ± 0.1V

VCCI / 2

VCCO / 2

VOH - 0.1V

VOL + 0.1V

1.2V ± 0.1V

VCCI / 2

VCCO / 2

VOH - 0.1V

VOL + 0.1V

www.fairchildsemi.com

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