IP4777CZ38 datasheet(7/25 Pages) PHILIPS

Part #	IP4777CZ38

Description	DVI and HDMI interface ESD protection, DDC buffering, hot plug control and backdrive protection

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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IP4777CZ38_2

Product data sheet

Rev. 02 — 12 February 2009

7 of 25

NXP Semiconductors

IP4777CZ38

DVI and HDMI interface ESD protection

8.

Static characteristics

[1]

This parameter is guaranteed by design.

Table 4.

TMDS protection circuit

Tamb = 25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Zener diode

VBRzd

Zener diode breakdown

voltage

I = 1 mA

6

-

9

V

Rdyn

dynamic resistance

I = 1 A; IEC 61000-4-5/9

positive transient

-

2.4

-

Ω

negative transient

-

1.3

-

Ω

Protection diode

Ibck

back current

from pins TMDS_x to pin TMDS_BIAS;

VCC(5V0) =0V; VCC(3V3) =0V

-

0.1

1

µA

IL(r)

reverse leakage current

VI = 3.0 V

-

1

-

µA

VF

forward voltage

-

0.7

-

V

VCL(ch)trt(pos)

positive transient channel

clamping voltage

VESD = 8 kV per IEC 61000-4-2;

voltage 30 ns after trigger

-8

-V

TMDS channel: pins TMDS_x

Cch(TMDS)

TMDS channel capacitance

VCC(5V0) = 5 V; f = 1 MHz; Vbias = 2.5 V

[1] -

0.7

-

pF

∆Cch(TMDS)

TMDS channel capacitance

difference

VCC(5V0) = 5 V; f = 1 MHz; Vbias = 2.5 V

[1] -

0.05

-

pF

Cch(mutual)

mutual channel capacitance

between signal pin TMDS_x and

pin n.c.; VCC(5V0) = 0 V; f = 1 MHz;

Vbias = 2.5 V

[1] -

0.07

-

pF

Table 5.

DDC circuit

VCC(3V3) = 2.7 V to 5.5 V; VCC(5V0) = 4.5 V to 5.5 V; GND = 0 V; Tamb = 25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ Max

Unit

Supplies: pins VCC(5V0) and VCC(3V3)

VCC(5V0)

supply voltage (5.0 V)

connector side

4.5

5.0

5.5

V

VCC(3V3)

supply voltage (3.3 V)

board side

2.7

3.3

5.5

V

ICC(5V0)

supply current (5.0 V)

VCC(5V0) = 5.5 V;

both channels HIGH:

DDC_DAT_OUT = VCC(5V0);

DDC_CLK_OUT = VCC(5V0)

-

1.4

2.5

mA

VCC(5V0) = 5.5 V;

both channels LOW:

DDC_DAT_IN = GND;

DDC_CLK_IN = GND;

DDC_DAT_OUT = open;

DDC_CLK_OUT = open

-

1.4

2.5

mA

ICC(3V3)

supply current (3.3 V)

no pull-up resistor

connected to VCC(3V3)

-

0.1

µA

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