Sharp LC-19LE430E Service Manual page 70

Led colour television

Table of Contents

LC-19LE430E/UK, LC-22LE430E/UK, LC-26LE430E/UK, LC-32LE430E/UK

FEATURES

· Compatible with HDMI 1.3a

· Supports 2.5 Gbps Signaling Rate for 480i/p, 720i/p, and 1080i/p Resolutions up to 12-Bit Color Depth

· Integrated Switchable Receiver Termination

· Integrated Switchable Receiver Termination Accommodate to Different Input Cable Lengths

· Intra-Pair Skew < 40 ps

· Inter-Pair Skew < 65 ps

· HBM ESD Protection Exceeds 8 kV to TMDS Inputs

· 3.3-V Fixed Supply to TMDS I/Os

· 5-V Fixed Supply to HPD, DDC, and Source Selection Circuits

· 64-Pin TQFP Package

· Footprint Compatible with 3-to-1 Switch TMDS351 with Port 3 Disabled

· ROHS Compatible and 260°C Reflow Rated

· TMDS250 is Available with Port 1 Disabled and Ports 2 and 3 Enabled

· Supports 5-V to 3.3-V Level Shifting on DDC Links

Applications

· Digital TV

· Digital Projector

1.7 U605 (CD4052BPWR TSSOP-16)

Description

The CD4051B, CD4052B, and CD4053B analog multiplexers are digitally-controlled analog switches having low ON impedance and very low OFF leakage

current. Control of analog signals up to 20VP-P can be achieved by digital signal amplitudes of 4.5V to 20V (if VDD-VSS = 3V, a VDD-VEE of up to 13V

can be controlled; for VDD-VEE level differences above 13V, a VDD-VSS of at least 4.5V is required). For example, if VDD = +4.5V, VSS = 0V, and VEE =

-13.5V, analog signals from -13.5V to +4.5V can be controlled by digital inputs of 0V to 5V. These multiplexer circuits dissipate extremely low quiescent

power over the full VDD-VSS and VDD-VEE supply-voltage ranges, independent of the logic state of the control signals. When a logic "1" is present at the

inhibit input terminal, all channels are off.

The CD4051B is a single 8-Channel multiplexer having three binary control inputs, A, B, and C, and an inhibit input. The three binary signals select 1 of 8

channels to be turned on, and connect one of the 8 inputs to the output.

The CD4052B is a differential 4-Channel multiplexer having two binary control inputs, A and B, and an inhibit input. The two binary input signals select 1 of

4 pairs of channels to be turned on and connect the analog inputs to the outputs. The CD4053B is a triple 2-Channel multiplexer having three separate

digital control inputs, A, B, and C, and an inhibit input. Each control input selects one of a pair of channels which are connected in a single-pole, double-

throw configuration.

When these devices are used as demultiplexers, the "CHANNEL IN/OUT" terminals are the outputs and the "COMMON OUT/IN" terminals are the inputs.

FEATURES

· Wide Range of Digital and Analog Signal Levels

- Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 20V

- Analog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≤20VP-P

· Low ON Resistance, 125Ω (Typ) Over 15VP-P Signal Input Range for VDD-VEE = 18V

· High OFF Resistance, Channel Leakage of ±100pA (Typ) at VDD-VEE = 18V

· Logic-Level Conversion for Digital Addressing Signals of 3V to 20V (VDD-VSS = 3V to 20V) to Switch Analog Signals to 20VP-P (VDD-VEE = 20V)

· Matched Switch Characteristics, rON = 5Ω (Typ) for VDD-VEE = 15V

· Very Low Quiescent Power Dissipation Under All Digital- Control Input and Supply Conditions, 0.2μW (Typ) at VDD-VSS = VDD-VEE = 10V

· Binary Address Decoding on Chip