74AVCH4T245D datasheet(7/26 Pages) NXP

Part #	74AVCH4T245D

Description	4-bit dual supply translating transceiver with configurable voltage translation; 3-state

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Manufacturer	NXP [NXP Semiconductors]

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74AVCH4T245_1

Product data sheet

Rev. 01 — 6 August 2009

7 of 26

NXP Semiconductors

74AVCH4T245

4-bit dual supply translating transceiver; 3-state

[1]

VCCO is the supply voltage associated with the output port.

[2]

VCCI is the supply voltage associated with the data input port.

[3]

The bus hold circuit can sink at least the minimum low sustaining current at VIL max. IBHL should be measured after lowering VI to GND

and then raising it to VIL max.

[4]

The bus hold circuit can source at least the minimum high sustaining current at VIH min. IBHH should be measured after raising VI to VCC

and then lowering it to VIH min.

[5]

An external driver must source at least IBHLO to switch this node from LOW to HIGH.

[6]

An external driver must sink at least IBHHO to switch this node from HIGH to LOW.

[7]

For I/O ports, the parameter IOZ includes the input leakage current.

CI

input capacitance

nDIR, nOE input; VI = 0 V or 3.3 V;

VCC(A) =VCC(B) = 3.3 V

-

1.0

-

pF

CI/O

input/output capacitance

A and B port; VO = 3.3 V or 0 V;

VCC(A) =VCC(B) = 3.3 V

-

4.0

-

pF

Table 6.

Typical static characteristics at Tamb = 25 °C[1][2] …continued

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

Symbol Parameter

Conditions

Min

Typ

Max

Unit

Table 7.

Static characteristics [1][2]

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

Symbol Parameter

Conditions

−40 °C to +85 °C

−40 °C to +125 °C

Unit

Min

Max

Min

Max

VIH

HIGH-level

input voltage

data input

VCCI = 0.8 V

0.70VCCI

-

0.70VCCI

-V

VCCI = 1.1 V to 1.95 V

0.65VCCI

-

0.65VCCI

-V

VCCI = 2.3 V to 2.7 V

1.6

-

1.6

-

V

VCCI = 3.0 V to 3.6 V

2

-

2

-

V

nDIR, nOE input

VCC(A) = 0.8 V

0.70VCC(A)

-

0.70VCC(A)

-V

VCC(A) = 1.1 V to 1.95 V

0.65VCC(A)

-

0.65VCC(A)

-V

VCC(A) = 2.3 V to 2.7 V

1.6

-

1.6

-

V

VCC(A) = 3.0 V to 3.6 V

2

-

2

-

V

VIL

LOW-level

input voltage

data input

VCCI = 0.8 V

-

0.30VCCI

-

0.30VCCI

V

VCCI = 1.1 V to 1.95 V

-

0.35VCCI

-

0.35VCCI

V

VCCI = 2.3 V to 2.7 V

-

0.7

-

0.7

V

VCCI = 3.0 V to 3.6 V

-

0.8

-

0.8

V

nDIR, nOE input

VCC(A) = 0.8 V

-

0.30VCC(A)

-

0.30VCC(A) V

VCC(A) = 1.1 V to 1.95 V

-

0.35VCC(A)

-

0.35VCC(A) V

VCC(A) = 2.3 V to 2.7 V

-

0.7

-

0.7

V

VCC(A) = 3.0 V to 3.6 V

-

0.8

-

0.8

V

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