UM3758 Datasheet, PDF (6/18 Pages) UMC Corporation – TRi-STATE ProgrammaBle Encoder/Decoder

Pin Descriptions (Continued)
Pin Number
JM3758 U M 3 7 5 8 U M 3 7 5 8
-108A/B - 0 8 4
-084AM
tAM/BM A/B
/BM
-
10
Designation
NC
11
NC
13
-
D3
14
-
-
D4
15
10
12
D5
16
11
13
D6
17
12
14
D7
18
-
Da
19
13
15
osc
20
14
16
21
15
17
vss
MODE
22
16
ia
RXINP
23
17
19
TX/RX OUT
24
18
20
VDD
Description
Noconnection
No connection
Data output pin 3, states are either HIGH (1 or open)
or LOW (0)
Data output pin 4, states are either HIGH (1 or open)
or LOW (0)
Data output pin 5, states are either HIGH (1 or open)
or LOW (0)
Data output pin 6, states are either HIGH (1 or open)
or LOW (0)
Data output pin 7, states are either HIGH (1 or open)
or LOW (0)
Data output pin 6, states are either HIGH (1 or open)
or LOW (0)
R.C. input pin for Single pin oscillator. A resistor is
connected from this pin to VDO and a capacitor to Vss
The ground pin for UM3756
This pin is used to select transmit or receive modes
MODE - VDO : Encoder mode
MODE - Vss : Decoder mode
Receiver input pin. Receives waveform from the detect
circuit
In encoder mode, this pin will transmit waveform; in
decoder mode, this pin will switch to LOW if compa-
rison is OK
The positive power supply of UM3756
- ._.
6
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