PI74LVC4245AS datasheet(5/9 Pages) PERICOM

부품명	PI74LVC4245AS

상세설명	8-Bit Dual Supply Bus Transceiver with 3-State Outputs

PDF	9 Pages

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제조업체	PERICOM [Pericom Semiconductor Corporation]

홈페이지	http://www.pericom.com

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5 / 9 page

PI74LVC4245A

8-Bit Dual Supply Bus Transceiver

with 3-State Outputs

P-0.2

08/11/03

ADVANCE INFORMATION

Parameters

From

(Input)

(Output)

VCCA =5V ± 0.5V,VCCB = 2.7V to 3.6V

Units

CL = 50pF, RL = 500Ω

Min.

Max.

tPHL

5.7

tPLH

5.5

tPHL

6.1

tPLH

5.9

tPZL

tPZH

7.6

tPZL

tPZH

7.7

tPLZ

6.2

tPHZ

5.8

tPLZ

tPHZ

6.8

tSK(O)

Output-to-Output Skew(8)

1.5

AC Electrical Characteristics

(Over Recommended Operating Free-Air Temperature Range unless otherwise noted, See Figure 1 and 2)

Power- Up Considerations

To avoid excessive supply current, bus contention or oscillation during power-up, the following guidelines should be followed:

1. Connect ground first before any supply voltage is applied.

2. Then Power up VCCA, which is the control side of the device.

3. Ramp OE ahead of or with VCCA to help prevent bus contention

4. Ramp DIR with VCCA if DIR HIGH is needed (A bus to B bus). Otherwise keep DIR LOW.

Note:

8. Skew between any two outputs of the same device, switching in the same direction. Parameter guaranteed by design.

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