Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - multiplexers SO 16

_______________General Description

The MAX308/MAX309 precision, monolithic, CMOS ana-

log multiplexers (muxes) offer low on-resistance (less

than 100Ω), which is matched to within 5Ω between

channels and remains flat over the specified analog sig-

nal range (7Ω max). They also offer low leakage over

temperature (NO-off leakage current less than 5nA at

+85°C) and fast switching speeds (transition time less

than 250ns). The MAX308 is a single-ended 1-of-8

device, and the MAX309 is a differential 2-of-4 device.

The MAX308/MAX309 are fabricated with Maxim’s

improved 44V silicon-gate process. Design improve-

ments yield extremely low charge injection (less than

10pC) and guarantee electrostatic discharge protection

greater than 2000V.

These muxes operate with a single +5V to +30V supply

or bipolar ±5V to ±20V supplies, while retaining

TTL/CMOS-logic input compatibility and fast switching.

CMOS inputs provide reduced input loading. These

improved parts are plug-in upgrades for the industry-

standard DG408, DG409, DG508A, and DG509A.

________________________Applications

Sample-and-Hold Circuits

Automatic Test Equipment

Heads-Up Displays

Guidance and Control Systems

Military Radios

Communications Systems

Battery-Operated Systems

PBX, PABX

Audio Signal Routing

____________________________Features

♦ Guaranteed On-Resistance Match Between

Channels, <5Ω Max

♦ Low On-Resistance, <100Ω Max

♦ Guaranteed Flat On-Resistance over Specified

Signal Range, 7Ω Max

♦ Guarateed Low Charge Injection, <10pC

♦ NO-Off Leakage Current <5nA at +85°C

♦ COM-Off Leakage Current <20nA at +85°C

♦ ESD Protection >2000V

♦ Plug-In Upgrade for Industry-Standard

DG408/DG409/DG508A/DG509A

♦ Single-Supply Operation (+5V to +30V)

Bipolar-Supply Operation (±5V to ±20V)

♦ Low Power Consumption, <300µW

♦ Rail-to-Rail Signal Handling

♦ TTL/CMOS-Logic Compatible

______________Ordering Information

MAX308/MAX309

Precision, 8-Channel/Dual 4-Channel,

High-Performance, CMOS Analog Multiplexers

________________________________________________________________ Maxim Integrated Products 1

CMOS DECODE LOGIC

A2 A1 A0 EN

NO8

NO7

NO6

NO5

NO4

NO3

NO2

NO1

COM

V+ V- GND

MAX308 8-CHANNEL SINGLE-ENDED MULTIPLEXER

GND

V+

NO1

V-

TOP VIEW

MAX308

NO5

NO6

NO7

NO8

COM

NO4

NO3

NO2

DIP/SO/TSSOP

Continued at end of data sheet.

_____________________Pin Configurations/Functional Diagrams/Truth Tables

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

19-0271; Rev 2; 8/02

PART

MAX308CPE

MAX308CSE

MAX308C/D 0°C to +70°C

0°C to +70°C

TEMP RANGE PIN-PACKAGE

16 Plastic DIP

16 Narrow SO

Dice*

Ordering Information continued at end of data sheet.

*Contact factory for dice specifications.

**Contact factory for availability.

MAX308EPE -40°C to +85°C 16 Plastic DIP

MAX308ESE -40°C to +85°C 16 Narrow SO

MAX308EJE -40°C to +85°C 16 CERDIP

MAX308MJE -55°C to +125°C 16 CERDIP**

MAX308CUE 0°C to +70°C 16 TSSOP

MAX308EUE -40°C to +85°C 16 TSSOP

Summary of content (12 pages)

PAGE 1
9-0271; Rev 2; 8/02 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers The MAX308/MAX309 are fabricated with Maxim’s improved 44V silicon-gate process. Design improvements yield extremely low charge injection (less than 10pC) and guarantee electrostatic discharge protection greater than 2000V. These muxes operate with a single +5V to +30V supply or bipolar ±5V to ±20V supplies, while retaining TTL/CMOS-logic input compatibility and fast switching.
PAGE 2
MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ABSOLUTE MAXIMUM RATINGS Voltage Referenced to VV+ ............................................................................-0.3V, 44V GND .........................................................................-0.3V, 25V Digital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V+ + 2V) or 30mA, (whichever occurs first) Continuous Current (any terminal) ......................................
PAGE 3
Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers (V+ = +15V, V- = -15V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX (Note 2) UNITS INPUT Input Current with Input Voltage High IAH VA = 2.4V or 15V -1.0 1.0 µA Input Current with Input Voltage Low IAL VEN = 0V or 2.4V, VA = 0V -1.0 1.0 µA ±20 30 75 0.5 V SUPPLY Power-Supply Range ±5 VEN = VA = 0V or 4.
PAGE 4
MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ELECTRICAL CHARACTERISTICS—Single Supply (V+ = +12V, V- = 0V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX (Note 2) UNITS SWITCH Analog Signal Range On-Resistance VNO, VCOM RON (Note 3) INO = -1.
PAGE 5
Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) 140 ±5V V+ = +15V V- = -15V 400 100 360 320 120 +125°C 80 ±15V 60 60 +25°C -55°C 40 ±20V RON (Ω) 200 160 40 10V 120 20 0 -15 -10 -5 0 5 10 15 -15 20 -10 -5 ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) +25°C 80 -55°C 60 15 0 ICOM (ON) 0 15 0.1 ICOM (ON) 0.001 0.
PAGE 6
MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ______________________________________________________________Pin Description PIN NAME FUNCTION MAX308 MAX309 1, 15, 16 — A0, A2, A1 Address Inputs — 1, 16 A0, A1 Address Inputs 2 2 EN Enable Input 3 3 V- Negative Supply Voltage Input 4–7 — NO1–NO4 Analog Inputs—Bidirectional — 4–7 NO1A–NO4A Analog Inputs—Bidirectional 8 — COM Analog Output—Bidirectional — 8, 9 COMA, COMB Analog
PAGE 7
Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers +15V V+ NO1 A2 A1 ±10V NO2-NO7 A0 MAX308 NO8 EN +10V COM GND VOUT V- LOGIC INPUT 50% 35pF 50Ω 0V 300Ω -15V +15V VNO1 SWITCH OUTPUT VOUT V+ NO1B A1 ±10V 90% 0V A0 90% NO1A-NO4A VNO8 NO4B MAX309 EN +10V tTRANS COMB V- GND tr < 20ns tf < 20ns +3V 50Ω tTRANS ON VOUT 35pF 300Ω -15V Figure 2.
PAGE 8
MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers _________________________________Test Circuits/Timing Diagrams (continued) +15V +2.4V V+ EN NO1-NO8 LOGIC INPUT +5V tr < 20ns tf < 20ns +3V 50% 0V A0 A1 VOUT MAX308 80% A2 COM GND SWITCH OUTPUT VOUT V- 35pF tOPEN 0V 300Ω 50Ω -15V Figure 4.
PAGE 9
Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers +15V +15V VIN VIN NO1 RS = 50Ω V+ NO8 COM A1 V+ NO1 NO2 NO8 A0 10nF 10nF VOUT RS = 50Ω MAX308 RL = 1kΩ A2 MAX308 COM A0 A1 RL = 1kΩ A2 EN GND 10nF V- GND OFF ISOLATION = 20log EN 10nF -15V VOUT VIN CROSSTALK = 20log Figure 6. Off Isolation VOUT V- -15V VOUT VIN Figure 7.
PAGE 10
MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ________Pin Configurations/Functional Diagrams/Truth Tables (continued) TOP VIEW V+ V- GND NO1A A0 1 16 A1 NO2A EN 2 15 GND NO3A 14 V+ NO4A V- 3 MAX309 NO1A 4 COMA 13 NO1B NO1B NO2A 5 12 NO2B NO3A 6 11 NO3B NO4A 7 10 N04B COMA 8 COMB 9 NO2B COMB NO3B NO4B CMOS DECODE LOGIC DIP/SO/TSSOP A1 EN A0 MAX309 4-CHANNEL DIFFERENTIAL MULTIPLEXER A2 A1 A0 EN ON SWITCH X X X 0 None A1
PAGE 11
Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers TEMP RANGE PIN-PACKAGE MAX309CPE PART 0°C to +70°C 16 Plastic DIP MAX309CSE 0°C to +70°C 16 Narrow SO MAX309CUE MAX309C/D MAX309EPE MAX309ESE MAX309EJE MAX309EUE MAX309MJE 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C 16 TSSOP Dice* 16 Plastic DIP 16 Narrow SO 16 CERDIP 16 TSSOP 16 CERDIP** Package Information For the latest package outline information, go to ww
PAGE 12
MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers __________________________________________________________Chip Topographies MAX308 EN A0 A1 A2 MAX309 GND EN A0 A1 N.C. GND N.C. VNO1 NO2 V+ NO4 COM NO8 V+ NO5 NO1A NO1B NO6 NO2A NO2B 0.136 (3.45mm) N.C. NO3 N.C. V- NO7 0.136 (3.45mm) NO3B NO3A NO4A 0.080" (2.03mm) COMA COMB NO4B 0.080" (2.03mm) N.C.