74LVCH8T245BQ datasheet(6/28 Pages) NXP

Teilenummer	74LVCH8T245BQ

Bauteilbeschribung	8-bit dual supply translating transceiver; 3-state

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74LVC_LVCH8T245

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Product data sheet

Rev. 3 — 12 December 2011

6 of 28

NXP Semiconductors

74LVC8T245; 74LVCH8T245

8-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]

To guarantee the node switches, an external driver must source/sink at least IBHLO / IBHHO when the input is in the range VIL to VIH.

IBHLO

bus hold LOW overdrive

current

A or B port; VCCI = 1.2 V

[2][3] -19

-

A

IBHHO

bus hold HIGH overdrive

current

A or B port; VCCI = 1.2 V

[2][3] -

19

-

A

IOZ

OFF-state output current

A or B port; VO =0 V or VCCO;

VCCO = 1.2 V to 5.5 V

[1] --

1

A

suspend mode A port; VO =0V orVCCO;

VCC(A) = 5.5 V; VCC(B) =0V

[1] --

1

A

suspend mode B port; VO =0V orVCCO;

VCC(A) =0 V; VCC(B) =5.5 V

[1] --

1

A

IOFF

power-off leakage current

A port; VI or VO = 0 V to 5.5 V;

VCC(A) =0V; VCC(B) = 1.2 V to 5.5 V

--

1

A

B port; VI or VO = 0 V to 5.5 V;

VCC(B) =0V; VCC(A) = 1.2 V to 5.5 V

--

1

A

CI

input capacitance

DIR, OE input; VI = 0 V or 3.3 V; VCC(A) =3.3 V

-

3

-

pF

CI/O

input/output capacitance

A and B port; VO =3.3 V or0V;

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

-6.5

-pF

Table 6.

Typical static characteristics at Tamb = 25 C …continued

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

Symbol Parameter

Conditions

Min

Typ

Max

Unit

Table 7.

Static characteristics

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

[1]

VCCI = 1.2 V

0.8VCCI

-0.8VCCI

-V

VCCI = 1.4 V to 1.95 V

0.65VCCI

-0.65VCCI

-V

VCCI = 2.3 V to 2.7 V

1.7

-

1.7

-

V

VCCI = 3.0 V to 3.6 V

2.0

-

2.0

-

V

VCCI = 4.5 V to 5.5 V

0.7VCCI

-0.7VCCI

-V

DIR, OE input

VCCI = 1.2 V

0.8VCC(A)

-0.8VCC(A)

-V

VCCI = 1.4 V to 1.95 V

0.65VCC(A)

-0.65VCC(A)

-V

VCCI = 2.3 V to 2.7 V

1.7

-

1.7

-

V

VCCI = 3.0 V to 3.6 V

2.0

-

2.0

-

V

VCCI = 4.5 V to 5.5 V

0.7VCC(A)

-0.7VCC(A)

-V

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