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M3493B2

ST Microelectronics
Part Number M3493B2
Manufacturer ST Microelectronics
Description CMOS 12 X 8 CROSSPOINTWITH CONTROL MEMORY
Published May 2, 2005
Detailed Description ® M3493B2 CMOS 12 X 8 CROSSPOINT WITH CONTROL MEMORY . . . . . . . LOW ON RESISTANCE (typ. 60 Ω at VDD = 10 V) INTER...
Datasheet PDF File M3493B2 PDF File

M3493B2
M3493B2

Overview
® M3493B2 CMOS 12 X 8 CROSSPOINT WITH CONTROL MEMORY .
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LOW ON RESISTANCE (typ.
60 Ω at VDD = 10 V) INTERNAL CONTROL LATCHES ANALOGSIGNALSWING CAPABILITYEQUAL TO POWER SUPPLY VOLTAGE APPLIED LESS THAN 1 % TOTAL DISTORT.
AT 0 dBm LESS THAN – 95 dB CROSS-TALK AT 1 KHz 1 VPP VERY LOW POWER CONSUMPTION PIN-TO-PIN COMPATIBLE WITH M093 DIP40 ORDERING NUMBER : M3493B2 (*) (*) It substitutes the obsolete M3493B1.
DESCRIPTION The M3493 contains a 12 x 8 array of crosspoint together with a 7 to 96 line decoder and latch circuits.
Anyoneof the 96 switches can be addressed by selecting the appropriate 7 input bits.
The selected switch can be turned on or off by applying a logical oneor zero to the data in and the strobeinputat logi- cal one.
A reset signal can be used to turn off all the switches together when is switched at logical one.
M3493 is available in 40 lead dual in-line plastic package.
BLOCK DIAGRAM June 1998 1/12 M3493B2 PIN CONNECTION (top view) INPUT/OUTPUT DESCRIPTION I/O POWER I I ADDRESS I I AX0-AX3 AY0-AY2 4, 5, 22, 23 2, 24, 25 X Address Lines.
These 4 pins are used to select one of the 12 rows of switches.
Refer to the truth table for legal address.
Y Address Lines.
These 3 pins are used to select one of the 8 columns of switches.
Refer to the truth table for legal address.
VDD VSS 40 20 Positive Power Supply Negative Power Supply Symbol Pin Description CONTROL I DATA 38 This input determines if the selected switch will be turned on (closed) or off (opened).
If the pin is held high, the selected switch will be closed.
If the pin is held low, the switch will be opened.
This pin enables whatever action is selected by the ADDRESS and DATA pins.
When the STROBE pin is held low, no switch openings or closings take place.
When the STROBE pin is held high, the switch addressed by the select lines will be opened or closed (depending upon the state of the DATA pin) Master Reset.
This pin turns off (opens) all 96 switches.
The states of the ab...


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