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74VCX163245

Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs

ON Semiconductor 

Capacitance

Symbol

Parameter

CIN Input Capacitance

CI/O Input/Output Capacitance

CPD Power Dissipation Capacitance

Conditions

VCCB = 2.5V, VCCA = 3.3V, VI = 0V

or VCCA/B

VCCB = 2.5V, VCCA = 3.3V, VI = 0V

or VCCA/B

VCCB = 2.5V, VCCA = 3.3V,

VI = 0V or VCCA/B, f = 10MHz

TA = +25°C

5

6

20

Units

pF

pF

pF

AC Loading and Waveforms

Test

tPLH, tPHL

tPZL, tPLZ

tPZH, tPHZ

Figure 1. AC Test Circuit

Switch

OPEN

6V at VCC = 3.3 ±0.3V;

VCC x 2 at VCC = 2.5 ± 0.2V;

1.8V ± 0.15V

GND

Figure 4. 3-STATE Output Low Enable and Disable

Times for Low Voltage Logic

tR = tF ≤ 2.0 ns, 10% to 90%

Figure 2. Waveform for Inverting

and Non-inverting Functions

tR = tF ≤ 2.0 ns, 10% to 90%

VCC

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

Vmi

1.5V

VCC / 2

VCC / 2

Vmo

1.5V

VCC / 2

VCC / 2

VX

VOL + 0.3V VOL + 0.15V VOL + 0.15V

VY

VOH – 0.3V VOH – 0.15V VOH – 0.15V

Figure 3. 3-STATE Output High Enable and Disable

Times for Low Voltage Logic

tR = tF ≤ 2.0 ns, 10% to 90%

©2000 Fairchild Semiconductor Corporation

74VCX163245 Rev. 1.7

9

www.fairchildsemi.com

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