Delphi Analog Digital Multiplexer

The Delphi 8-channel Analog/Digital Multiplexer (A/D MUX) (similar to a CD/HC4051) is controlled by analog switches via three mux select inputs. These A/D MUX switches have low on resistance and high off resistance. They are not intended to be used bidirectionally, but rather as inputs and a single output. The inhibit (INH) input, when pulled high disables all switches to their off state, resulting in the output being placed in a hi Z low leakage current state. All ANx inputs and digital inputs are protected from electrostatic damage by internal protection diodes.

Features

8 to 1 Mux
Input clamps on the mux avoid disruption from -2V to 26.5V on adjacent pins
Low Rdson < 200 ohms
'Break before make' to assure no crosstalk
Internal pull down current sources on the select lines

Packaging

Available in 16-pin SO package
Available in Flip Chip package

Typical Applications

Automotive Engine Controls
Exhaust System
ADC 'front end'

Recommended Operating Conditions
Characteristic	Symbol	Value	Unit
Supply Voltage	Vdd	4.75 to 5.25	V
Input Control Voltage (MSEL, Control Logic)	Vin	0 to VDD	V
Input Voltage (ANx, with 10K series resistors)	Vin	-2.0 to 26.5	VDC
Operating Temp. Range, Ambient	Ta	-40 to 125	°C

Absolute Maximum Ratings
Characteristic	Symbol	Value	Unit
Supply Voltage	Vdd	-0.3 to 7.0	V
Input Control Voltage (MSEL, Control Logic)	Vin	-0.3 to 7.0	V
Input Voltage (ANx w/10K series resistors)	Vin	-2.0 to 26.5	V
Max. Thermal Resistance		71	°C/W
Power Dissipation		350	mW
Storage Temp. Range	Tstg	-65 to 150	°C
Max. Junction Temp.		-40 to 125	°C

Electrical Performance Characteristics - A/D MUX
Characteristics	Symbol	Condition	Min	Max	Unit
Quiescent Device Current	Idd	Vdd=5.0 ±0.1 Vdc		1.0 2.0	mA
Minimum high level Input Voltage	Vih	3 volt logic	2.0		V
Max. low level Input Voltage	Vil	3 volt logic		0.8	V
Input Current High	lih	Vin=Vih		80	µA
Input Current Low	lil	Vin=Vil	10		µA
Input Capacitance	Cin	Switch inputs, ANx, Control & inhibit inputs, MSELx, INH		7.5 20	pF
Output Capacitance	Cout	Common output; OUT		100	pF
Feedthrough Capacitance	Cios	Switch inputs to common output		10	pF
Signal input (ANx) to signal out (OUT)	Tphl Tplh	Rout=200K		145	ns
(MSELx) address to signal output (OUT) MUX switch turn "on⁄off"	Tpzl Tpzh	Measured from MUX Vthreshold to OUT Vout @ 10% ⁄ 90% voltage levels @ Vin=Vanx=oV & Vdd Rout=1K pull-up to Vdd Cload=50pF		250	ns
Inhibit (INH) to signal output (OUT) INH switch turn "on⁄off"	Tpzl Tpzh	Measured from MUX Vthreshold to OUT Vout @ 10% ⁄ 90% voltage levels@ Vin=Vanx=oV & Vdd Cload=50pF		350	ns
Control input to signal out crosstalk	Xtlk	Rload=10Kohms to gnd. on both input and output pins		20	mVp
Crosstalk between any two channels	Xtlk	Rload=1Koms to gnd. 20 log10 VO⁄Vi=-40dB		3	MHz
"OFF" Channel Leakage Current	loclc	Sum of "off" channels leakage currents at inputs; -40 to 25°C 125°C		0.2 1.0	µA

Microelectronics

CMOS

Delphi Analog Digital Multiplexer