Harman Kardon AVR347 Service Manual

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TC7MZ4051,4052,4053FKTOSHIBA CMOS Digital Integrated Circuit Silicon MonolithicTC7MZ4051FK,TC7MZ4052FK,TC7MZ4053FKTC7MZ4051FK 8-Channel Analog Multiplexer/DemultiplexerTC7MZ4052FK Dual 4-Channel Analog Multiplexer/DemultiplexerTC7MZ4053FK Triple 2-Channel AnalogMultiplexer/DemultiplexerThe TC7MZ4051/4052/4053FK are high-speed, low-voltagedrive analog multiplexer/demultiplexers using silicon gate CMOStechnology. In 3 V and 5 V systems these can achieve high-speedoperation with the low power dissipation that is a feature ofCMOS.The TC7MZ4051/4052/4053FK offer analog/digital signalselection as well as mixed signals. The 4051 has an 8-channelconfiguration, the 4052 has an 4-channel × 2 configuration, andthe 4053 has a 2-channel × 3 configuration.The switches for each channel are turned ON by the control pindigital signals.Although the control signal logical amplitude (VCC − GND) is small, the device can perform large-amplitude(VCC − VEE) signal switching.For example, if VCC = 3 V, GND = 0 V, and VEE = −3 V, signals between −3 V and +3 V can be switched from thelogical circuit using a single 3 V power supply.All input pins are equipped with a newly developed input protection circuit that avoids the need for a diode onthe plus side (forward side from the input to the VCC). As a result, for example, 5 V signals can be permitted on theinputs even when the power supply voltage to the circuits is off. As a result of this input power protection, theTC7MZ4051/4052/4053FK can be used in a variety of applications, including in the system which has two powersupplies, and in battery backup circuits.Features· Low ON resistance: Ron = 22 Ω (typ.) (VCC − VEE = 3 V)Ron = 15 Ω (typ.) (VCC − VEE = 6 V)· High speed: tpd = 3 ns (typ.) (VCC = 3.0 V)· Low power dissipation: I CC = 4 μA (max) (Ta = 25°C)· Input level: VIL = 0.8 V (max) (VCC = 3 V)VIH = 2.0 V (min) (V CC = 3 V)· Power down protection is provided on all control inputs· Pin and function compatible with 74HC4051/4052/4053Weight: 0.02 g (typ.)AVR347 harman/kardon130