®
MPC508
MPC508A
MPC509A
MPC509
Single-Ended 8-Channel/Differential 4-Channel
CMOS ANALOG MULTIPLEXERS
The MPC508A and MPC509A are fabricated with
FEATURES
Burr-Brown’s dielectrically isolated CMOS technol-
ogy. The multiplexers are available in plastic DIP and
plastic SOIC packages. Temperature range is –40°C to
+85°C.
● ANALOG OVERVOLTAGE PROTECTION:
70Vp-p
● NO CHANNEL INTERACTION DURING
OVERVOLTAGE
● BREAK-BEFORE-MAKE SWITCHING
FUNCTIONAL DIAGRAMS
● ANALOG SIGNAL RANGE: ±15V
1kΩ
● STANDBY POWER: 7.5mW typ
In 1
● TRUE SECOND SOURCE
Out
1kΩ
1kΩ
In 2
In 8
Decoder/
Driver
DESCRIPTION
The MPC508A is an 8-channel single-ended analog
multiplexer and the MPC509A is a 4-channel differen-
tial multiplexer.
Overvoltage
5V
Ref
Level
Shift
Clamp and
Signal
Isolation
The MPC508A and MPC509A multiplexers have in-
put overvoltage protection. Analog input voltages may
exceed either power supply voltage without damaging
the device or disturbing the signal path of other chan-
nels. The protection circuitry assures that signal fidel-
ity is maintained even under fault conditions that
would destroy other multiplexers. Analog inputs can
withstand 70Vp-p signal levels and standard ESD
tests. Signal sources are protected from short circuits
should multiplexer power loss occur; each input pre-
sents a 1kΩ resistance under this condition. Digital
inputs can also sustain continuous faults up to 4V
greater than either supply voltage.
(1)
(1)
(1) (1)
NOTE: (1) Digital
Input Protection.
MPC508A
A0 A1 A2
EN
1kΩ
1kΩ
In 1A
In 4A
Out A
Out B
1kΩ
1kΩ
In 1B
In 4B
Decoder/
Driver
These features make the MPC508A and MPC509A
ideal for use in systems where the analog signals
originate from external equipment or separately pow-
ered sources.
Overvoltage
Clamp and
Signal
5V
Ref
Level
Shift
Isolation
(1) (1)
(1)
NOTE: (1) Digital
Input Protection.
MPC509A
A0 A1
EN
International Airport Industrial Park
•
Mailing Address: PO Box 11400, Tucson, AZ 85734
FAXLine: (800) 548-6133 (US/Canada Only)
• Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/
•
•
Cable: BBRCORP
•
Telex: 066-6491
•
FAX: (520) 889-1510
•
Immediate Product Info: (800) 548-6132
®
©1988 Burr-Brown Corporation
PDS-775E
Printed in U.S.A. March, 1998
MPC508A, 509A
1