LC7824 データシートの表示（PDF） - SANYO -> Panasonic
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LC7824 Datasheet PDF : 4 Pages
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LC7824
Pin Description
Number
1, 2, 3, 12, 13, 15
4, 14, 16
5
6
7
8
9
10
11
Name
Description
IN1 to IN6 Analog switch inputs/outputs
COM1 to COM3 Analog switch common inputs/outputs
VEE
CE
–4.5 to –9V supply voltage
Schmitt-trigger, chip enable
DI
Schmitt-trigger, serial data input
CL
Schmitt-trigger, clock input
VSS
S
Ground
Device select input
VDD
4.5 to 9V supply voltage
Timing Characteristics
Ta = –30 to +75˚C, VDD=4.5 to 9V
Parameter
Symbol
LOW-level clock pulsewidth
HIGH-level clock pulsewidth
Setup time
Serial data input timing
toL
toH
tsetup
t1
t2
t3
Conditions
Ratings
Unit
min typ max
0.5
µs
0.5
µs
0.5
µs
0
µs
0.5
µs
0.5
µs
Functional Description
The LC7824 analog switch is controlled from a three-wire bus, which comprises chip-enable, clock and serial data
inputs. The 16-bit serial input code comprises eight address bits and eight control bits as shown in figure 1.
Figure 1. Data input
The address data is latched on the rising edge of CE, and the input data, on the falling edge as shown in figure 2.
Figure 2. Input timing
When S (pin 10) is LOW, the device address is 01101110 (6EH), and when HIGH, 01101111 (6FH).
Each switch is turned ON if the corresponding control bit is 1, and OFF, if 0. The X bit is ignored.
No.3641–3/4
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