LC78212 Datasheet PDF - ON Semiconductor
| Part Number | LC78212 | |
| Description | Analog Function Switch | |
| Manufacturers | ON Semiconductor | |
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Ordering number : ENA4817A
LC78211, 78212, 78213
CMOS LSI
Analog Function Switch
http://onsemi.com
Applications
Function switching under serial data control in amplifiers, receivers, and other electronic equipment.
Features
Two sets of eight (or in the LC78213, seven) built-in circuits with three switching configurations available based on
differing internal connections.
Control according to serial data sent from a microprocessor, and easy connection to 5 V microprocessors.
Two identical products can be connected to a shared bus due to the provision of a select pin (S).
A reset pin that turns off all analog switches.
A ±20 V withstand voltage rating allows these products to provide a wide dynamic range.
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
Symbol
Conditions
Maximum supply voltage
Maximum input voltage
VDD max
VEE max
VI1
VDD
VEE
DI, CL, CE, S, RES
VI2 L1 to L8, R1 to R8, LCOM1 to LCOM4, RCOM1 to RCOM4
Analog switch potential
difference when on
VON
With the switch on
Ratings
–0.3 to +20
–20 to +0.3
–0.3 to +20
VEE – 0.3 to VDD + 0.3
0.5
Unit
V
V
V
V
V
Allowable power dissipation
Operating temperature range
Storage temperature range
Pd max
Topr
Tstg
Ta ≤ 75°C
100
–30 to +75
–40 to +125
mW
C
C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
Package Dimensions
unit : mm
PDIP30 / DIP30SD (400mil)
CASE 646AZ
ORDERING INFORMATION
See detailed ordering and shipping information on page 6 of this data sheet.
Semiconductor Components Industries, LLC, 2013
December, 2013
DIP30SD (400mil)
73096HA (OT)/72994 TH (OT) No.A4817-1/6
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Pin Functions
Pin
VDD, VSS, VEE
L1 to L8, R1 to R8,
LCOM1 to LCOM4,
RCOM1 to RCOM4
CL, DI, CE
S
LC78211, 78212, 78213
I/O Internal equivalent circuit
See the block diagram.
Power supply
Pin function
Analog switch input and output
Serial data input (Schmitt buffer)
I
CL..............Clock input
DI...............Data input
CE .............Chip enable
Selection of one of two chips
The address is set to the values shown in the table below according to
the level input to the S pin.
Product
S pin
level
A0
Address
A1 A2
A3
I L0101
LC78211
H1 1 0 1
LC78212
L0011
H1 0 1 1
LC78213
L0111
H1 1 1 1
RES
I
Reset input
The states of the analog switches are undefined when power is first
applied. Setting this pin low will force all switches the off state.
Operation
1. Data Input Procedure
The LC78211, LC78212 and LC78213 are controlled by inputting specified data to the CL, DI and CE pins. The
input data consists of 12 bits, of which four bits are address and eight bits are data.
Bits correspond to the L1 to L8 and R1 to R8 analog switches, and a value of one turns the corresponding switch on,
and a value of zero turns it off.
0 .........Off
1 .........On
The address is used when the chip is connected to a shared bus. The data (address) that must be transmitted depends
on the S pin and the particular product as shown in the table below.
Product
LC78211
LC78212
LC78213
S pin
level
L
H
L
H
L
H
A0
0
1
0
1
0
1
Address
A1 A2
10
10
01
01
11
11
A3
1
1
1
1
1
1
Note: The bit for switch eight in the LC78213 is a “don’t care” bit, that is it can be either 0 or 1 without affecting
chip function. This is because the LC78213 has two sets of seven (not eight) circuits.
No. 4817-5/6
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| Information | Total 6 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
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