LC78211-E [ONSEMI]
模拟功能开关;
| 型号： | LC78211-E |
| 厂家： | 
ONSEMI |
| 描述： | 模拟功能开关 开关 |
| 文件： | 总6页 (文件大小：281K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA4817A
LC78211, 78212, 78213
CMOS LSI
http://onsemi.com
Analog Function Switch
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
Ratings
–0.3 to +20
Unit
V
Maximum supply voltage
V
max
max
V
V
DD
EE
DD
V
–20 to +0.3
–0.3 to +20
V
EE
Maximum input voltage
VI1
VI2
DI, CL, CE, S,
V
RES
L1 to L8, R1 to R8, LCOM1 to LCOM4, RCOM1 to RCOM4
With the switch on
VEE – 0.3 to VDD + 0.3
0.5
V
Analog switch potential
difference when on
VON
V
Allowable power dissipation
Operating temperature range
Storage temperature range
Pd max
Topr
Ta ≤ 75°C
100
–30 to +75
–40 to +125
mW
C
Tstg
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
DIP30SD (400mil)
ORDERING INFORMATION
See detailed ordering and shipping information on page 6 of this data sheet.
Semiconductor Components Industries, LLC, 2013
December, 2013
73096HA (OT)/72994 TH (OT) No.A4817-1/6
LC78211, 78212, 78213
Pin Assignments
Top view
Allowable Operating Ranges at Ta = 25°C, V = 0 V, | V | ≥ | V |
EE
SS
DD
Parameter
Symbol
Conditions
min
6.0
typ
max
18.5
0
Unit
V
V
V
V
– V ≥ 12 V: V
DD
DD
DD
EE
DD
Maximum supply voltage
V
– V ≥ 12 V: V
–18.5
4.0
V
EE
EE
EE
V
V
1
2
1
2
DI, CL, CE
S, RES
18.5
V
IH
Input high level voltage
Input low level voltage
0.7 V
V
V
IH
DD
0
DD
V
V
DI, CL, CE
S, RES
0.7
V
IL
IL
0
0.3 V
DD
V
Analog switch input
voltage range
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
V
V
V
V
IN
EE
DD
Low level clock pulse width
High level clock pulse width
t
CL
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.3
µs
µs
µs
µs
µs
µs
µs
V
øL
t
CL
øH
t
t
CL, DI
CL, CE
CL, CE
CL, CE
set up
t1*
Setup time
t2*
t3*
Minimum reset pulse width
Hysteresis
V
≥ 6 V: RES
DD
wRES
V
H
CL, CE, DI
Note: * CE, CL and DI waveforms
No. 4817-2/6
LC78211, 78212, 78213
Electrical Characteristics at Ta = 25°C, V = 0 V
SS
Parameter
Symbol
Conditions
– V = 12 V:
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
min
typ
150
max
Unit
I = 1 mA, V
DD
EE
R
R
1
Ω
ON
Analog switch on resistance
I = 1 mA, V
– V = 37 V:
EE
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
DD
2
70
0.0015
0.01
55
Ω
%
ON
V
= 1 Vrms, f = 1 kHz, V
– V = 37 V:
IN
DD EE
THD1
THD2
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
0.01
0.05
Total harmonic distortion
V
= 0.1 Vrms, f = 1 kHz, V
– V = 37 V:
IN
DD EE
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
%
V
= 0 dBV, f = 10 kHz, V
– V = 37 V:
IN
DD EE
Feedthrough
Crosstalk
F
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
dB
dB
TH
V
= 0 dBV, f = 10 kHz, V
– V = 37 V:
IN
DD EE
CT
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
75
Input high level current
Input low level current
I
V = 18.5 V: DI, CL, CE, S, RES
I
+10
µA
µA
IH
I
V = 0 V: DI, CL, CE, S, RES
I
–10
–10
IL
V = V to V + 37 V:
I
EE
EE
Analog switch leakage current
(off state)
I
L1 to L8, R1 to R8, LCOM1 to LCOM4,
RCOM1 to RCOM4
+10
1.0
µA
OFF
Current drain
I
V
mA
DD
DD
Equivalent Circuit Block Diagrams
Continued on next page.
No. 4817-3/6
LC78211, 78212, 78213
Continued from preceding page.
No. 4817-4/6
LC78211, 78212, 78213
Pin Functions
Pin
I/O
Internal equivalent circuit
Pin function
V
, V , V
Power supply
DD SS EE
L1 to L8, R1 to R8,
LCOM1 to LCOM4,
RCOM1 to RCOM4
See the block diagram.
Analog switch input and output
Serial data input (Schmitt buffer)
CL..............Clock input
DI...............Data input
CL, DI, CE
I
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.
Address
S pin
level
Product
A
A
A
A
3
0
1
2
L
H
L
0
1
0
1
S
I
LC78211
1
0
1
0
1
1
0
0
1
1
0
1
1
1
1
1
1
1
1
1
LC78212
LC78213
H
L
H
Reset input
RES
I
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.
Address
S pin
level
Product
A
A
A
A
3
0
1
2
L
H
L
0
1
0
1
LC78211
1
0
1
0
1
1
0
0
1
1
0
1
1
1
1
1
1
1
1
1
LC78212
LC78213
H
L
H
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
LC78211, 78212, 78213
2. DI, CL and CE Timing
Data is read in on the rising edge of CL and latched on the falling edge of CE.
3. Notes on the Reset Pin
The states of the analog switches are undefined when power is first applied. However, it is possible to use the reset
pin to force all switches to the off state by connecting an RC circuit to this pin.
4. Using a CCB Bus with Multiple ICs
The LC78211, LC78212 and LC78213 retain their prior state until they receive data with a matching address.
5. Replacing Earlier Models
Caution is required when replacing an LC7821N, LC7823N and LC7823N with an LC78211, LC78212 and
LC78213, since the S pin threshold levels differ.
6. Handling of Unused Input Pins
We recommend connecting any unused switch pin to VSS through a resistor of up to a few 100 k to prevent damage
from static electricity.
ORDERING INFORMATION
Device
Package
Shipping (Qty / Packing)
20 / Fan-Fold
DIP30SD(400mil)
(Pb-Free / Halogen Free)
LC78211-E
LC78212-E
LC78213-E
DIP30SD(400mil)
(Pb-Free / Halogen Free)
20 / Fan-Fold
20 / Fan-Fold
DIP30SD(400mil)
(Pb-Free / Halogen Free)
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PS No.A4817-6/6
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