Texas Instruments SN 74 HC 4851 – Q 1 INSTALLATION INSTRUCTIONS

SN74HC4851 Q1 8 CHANNEL ANALOG MULTIPLEXER/DEMULTIPLEXER WITH INJECTION CURRENT EFFECT CONTROL

SCLS554A − JANUARY 2004 − REVISED MARCH 2004

D Qualification in Accordance With	D OR PW PACKAGE
AEC-Q100†				(TOP VIEW)
D Qualified for Automotive Applications	Y4			1	16		VCC
D Customer-Specific Configuration Control				2
	Y6				15		Y2
Can Be Supported Along With	COM			3	14		Y1
Major-Change Approval	Y7			4	13		Y0
D Injection-Current Cross Coupling <1mV/mA	Y5			5	12		Y3
(see Figure 1)	INH			6	11		A
D Low Crosstalk Between Switches	NC			7	10		B
				8
D Pin Compatible With CD74HC4051,	GND				9		C
SN74LV4051A, and CD4051B	NC − No internal connection

D2-V to 6-V VCC Operation

DLatch-Up Performance Exceeds 100 mA Per JESD 78, Class II

†Contact factory for details. Q100 qualification data available on request.

description/ordering information

This eight-channel CMOS analog multiplexer/demultiplexer is pin compatible with the ’4051 function and, additionally, features injection-current effect control, which has excellent value in automotive applications where voltages in excess of normal supply voltages are common.

	The injection-current effect control allows signals at disabled analog input channels to exceed the supply
	voltage without affecting the signal of the enabled analog channel. This eliminates the need for external
www.DataSheet4U.com	diode/resistor networks typically used to keep the analog channel signals within the supply-voltage range.
				ORDERING INFORMATION
		T		PACKAGE‡		ORDERABLE	TOP-SIDE
		A				PART NUMBER	MARKING
		−40 °C to 125°C	SOIC − D		Tape and reel	SN74HC4851QDRQ1	HC4851Q
			TSSOP − PW		Tape and reel	SN74HC4851QPWRQ1	HC4851Q

‡Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.

FUNCTION TABLE

		INPUTS			ON
	INH	C	B	A	CHANNEL
	L	L	L	L	Y0
	L	L	L	H	Y1
	L	L	H	L	Y2
	L	L	H	H	Y3
	L	H	L	L	Y4
	L	H	L	H	Y5
	L	H	H	L	Y6
	L	H	H	H	Y7
	H	X	X	X	None

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.	Copyright 2004, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265	1

SN74HC4851 Q1

8 CHANNEL ANALOG MULTIPLEXER/DEMULTIPLEXER WITH INJECTION CURRENT EFFECT CONTROL

SCLS554A − JANUARY 2004 − REVISED MARCH 2004

logic diagram (positive logic)

		Injection−	3
		Current		COM
		Control
		Injection−	13
		Current		Y0
		Control
		Injection−	14
		Current		Y1
A	11	Control
		Injection−	15	Y2
		Current
		Control
		Injection−	12	Y3
		Current
B	10	Control
		Injection−	1	Y4
		Current
		Control
		Injection−	5	Y5
		Current
	9	Control
C
		Injection−	2	Y6
		Current
		Control
		Injection−	4
	6	Current		Y7
INH
		Control

2	POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN74HC4851 Q1 8 CHANNEL ANALOG MULTIPLEXER/DEMULTIPLEXER WITH INJECTION CURRENT EFFECT CONTROL

SCLS554A − JANUARY 2004 − REVISED MARCH 2004

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	−0.5 V to V CC + 0.5 V
Switch I/O voltage range, VIO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	−0.5 V to V CC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . ±20 mA
I/O diode current, IIOK (VIO < 0 or VIO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±20 mA
Switch through current, IT (VIO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±50 mA
Package thermal impedance, θJA (see Note 3): D package . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . 73°C/W
PW package . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 108°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . −65 °C to 150°C

†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

2.This value is limited to 5.5 V maximum.

3.The package thermal impedance is calculated in accordance with JESD 51-7.

recommended operating conditions (see Note 4)

			MIN	MAX	UNIT
VCC	Supply voltage		2	6	V
		VCC = 2 V	1.5
	High-level input voltage,	VCC = 3 V	2.1
VIH		VCC = 3.3 V	2.3		V
	control inputs
		VCC = 4.5 V	3.15
		VCC = 6 V	4.2
		VCC = 2 V		0.5
	Low-level input voltage,	VCC = 3 V		0.9
VIL		VCC = 3.3 V		1	V
	control inputs
		VCC = 4.5 V		1.35
		VCC = 6 V		1.8
VI	Control input voltage		0	VCC	V
VIO	Input/output voltage		0	VCC	V
		VCC = 2 V		1000
		VCC = 3 V		800
∆t/∆v	Input transition rise or fall time	VCC = 3.3 V		700	ns
		VCC = 4.5 V		500
		VCC = 6 V		400
TA	Operating free-air temperature		−40	125	°C

NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

SN74HC4851 Q1

8 CHANNEL ANALOG MULTIPLEXER/DEMULTIPLEXER WITH INJECTION CURRENT EFFECT CONTROL

SCLS554A − JANUARY 2004 − REVISED MARCH 2004

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)

	PARAMETER	TEST CONDITIONS	VCC		TA = 25°C		UP TO 85°C	UP TO 125°C	UNIT
				MIN	TYP	MAX	MIN MAX	MIN MAX
			2.V		500	650	670	700
		IT ≤ 2 mA,
	On-state		3 V		215	280	320	360
		VI = VCC to GND,
ron			3.3 V		210	270	305	345	Ω
	switch resistance	VINH = VIL
			4.5 V		160	210	240	270
		(see Figure 5)
			6 V		150	195	220	250
			2.V		4	13	18	23
	Difference in	IT ≤ 2 mA,	3 V		2	10	12	16
∆ron			3.3 V		2	9	12	16	Ω
	on-state resistance	VI = VCC/2,
	between switches	VINH = VIL	4.5 V		2	9	12	16
			6 V		3	10	14	19
II	Control input current	VI = VCC or GND	6 V			±0.1	±0.1	±1	µA
	Off-state switch	VI = VCC or GND,				±0.1	±0.5	±1
	leakage current	VINH = VIH
IS(off)	(any one channel)	(see Figure 6)	6 V						µA
	Off-state switch	VI = VCC or GND,				±0.2	±2	±4
	leakage current	VINH = VIH
	(common channel)	(see Figure 7)
	On-state switch	VI = VCC or GND,				±0.1	±0.5	±1	µA
IS(on)		VINH = VIL	6 V
	leakage current
		(see Figure 8)
ICC	Supply current	VI = VCC or GND	6 V			2	20	40	µA
CIC	Control input capacitance	A, B, C, INH			3.5	10	10	10	pF
CIS	Common terminal	Switch off			22	40	40	40	pF
	capacitance
COS	Switch terminal capacitance	Switch off			6.7	15	15	15	pF

injection current coupling specifications, TA = −40 °C to 125°C

	PARAMETER	VCC	TEST CONDITIONS		MIN TYP†	MAX	UNIT
		3.3 V		I ‡ ≤ 1 mA	0.05	1
		5 V		I	0.1	1
			RS ≤ 3.9 kΩ
		3.3 V		I ‡ ≤ 10 mA	0.345	5
V∆out	Maximum shift of output voltage of enabled analog	5 V		I	0.067	5
							mV
	channel	3.3 V		I ‡ ≤ 1 mA	0.05	2
		5 V		I	0.11	2
			RS ≤ 20 kΩ
		3.3 V		I ‡ ≤ 10 mA	0.05	20
		5 V		I	0.024	20

†Typical values are measured at TA = 25°C.

‡ II = total current injected into all disabled channels

4	POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN74HC4851 Q1 8 CHANNEL ANALOG MULTIPLEXER/DEMULTIPLEXER WITH INJECTION CURRENT EFFECT CONTROL

SCLS554A − JANUARY 2004 − REVISED MARCH 2004

switching characteristics over recommended operating free-air temperature range, VCC = 2 V, CL = 50 pF (unless otherwise noted) (see Figures 9−14)

		PARAMETER	FROM	TO	TA = 25°C		UP TO 85°C	UP TO 125°C	UNIT
			(INPUT)	(OUTPUT)	MIN TYP	MAX	MIN MAX	MIN MAX
	tPLH	Propagation	COM or Yn	Yn or COM	19.5	30	34	37	ns
	tPHL	delay time
	tPLH	Propagation	A, B, C	COM or Yn	23	35	40	45	ns
	tPHL	delay time
	tPZH	Enable	INH	COM or Yn		95	105	115	ns
	tPZL	delay time
	tPHZ	Disable	INH	COM or Yn		95	105	115	ns
	tPLZ	delay time

switching characteristics over recommended operating free-air temperature range, VCC = 3 V, CL = 50 pF (unless otherwise noted) (see Figures 9−14)

		PARAMETER	FROM	TO	TA = 25°C		UP TO 85°C	UP TO 125°C	UNIT
			(INPUT)	(OUTPUT)	MIN TYP	MAX	MIN MAX	MIN MAX
	tPLH	Propagation	COM or Yn	Yn or COM	12	17.5	19.5	21.5	ns
	tPHL	delay time
	tPLH	Propagation	A, B, C	COM or Yn	13.5	19.5	22	25	ns
	tPHL	delay time
	tPZH	Enable	INH	COM or Yn		90	100	110	ns
	tPZL	delay time
	tPHZ	Disable	INH	COM or Yn		90	100	110	ns
	tPLZ	delay time

switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V, CL = 50 pF (unless otherwise noted) (see Figures 9−14)

		PARAMETER	FROM	TO	TA = 25°C		UP TO 85°C	UP TO 125°C	UNIT
			(INPUT)	(OUTPUT)	MIN TYP	MAX	MIN MAX	MIN MAX
	tPLH	Propagation	COM or Yn	Yn or COM	11	16.5	18.5	20.5	ns
	tPHL	delay time
	tPLH	Propagation	A, B, C	COM or Yn	12.5	18.5	21	24	ns
	tPHL	delay time
	tPZH	Enable	INH	COM or Yn		85	95	105	ns
	tPZL	delay time
	tPHZ	Disable	INH	COM or Yn		85	95	105	ns
	tPLZ	delay time

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