M-993 Clare, M-993 Datasheet - Page 3

• Manufacturer Part Number: M-993
• Description: Solid State Relays Region 1 MF Tone Generator, 14xpin
• Manufacturer: Clare

Specifications of M-993

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 14
• Lead Free Status / Rohs Status: Not Compliant

A typical control sequence for the M-993 is: (1) set
data lines Selection for data settings for a particular
tone pair output).to desired frequency selection, (2)
wait for data lines to settle, (3) drive the chip enable
(CE) low, (4) maintain CE low for desired tone duration
(Note: data lines may be changed after data hold
time), and (5) return CE to a logic high.
In a bus-oriented system, noise on the data lines may
propagate through the device and appear at the out-
put. To safeguard against this, use an external latch to
clock the data into the device. In addition, it is good
Rev. 1
Pin Function
Power-On Reset Circuit
Pin
CE
D0 - D3
D4-D5
MUTE
OUTDRIVE
V
V
V
X
X
DD
REF
SS
IN
OUT
Latches data and enables output (active low
input).
Data input pins. (See Data/Tone Selection.)
Leave open.
Output indicates that a signal is being
generated at OUTDRIVE.
Linear buffered tone output.
Most positive power supply input pin.
Internally generated mid-power supply
voltage (output).
Most negative power supply input pin.
Crystal oscillator or digital clock input.
Crystal oscillator output.
Function
www.clare.com
Data/Tone Selection
practice to bypass the V
capacitor (~0.01mF) to reduce power supply noise.
The designer should be aware of device timing
requirements and design accordingly. Beware of hard-
wiring the data input pins for dedicated tone genera-
tion. An RC network like that shown in Power-On
Reset Circuit should be used to momentarily reset the
device immediately following a power-up to ensure
reliable operation.
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
D0 Frequency (Hz)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1100
1100
1100
1300
1500
1300
700
700
900
700
900
700
900
900
700
1
REF
pin to ground with a small
1700
1100
1100
1300
1300
1300
1500
1500
1500
1500
1700
1700
1700
1700
900
2
Key Pulse (KP)
Digit 1
Digit 2
Digit 3
Digit 4
Digit 5
Digit 6
Digit 7
Digit 8
Digit 9
Digit 0
Use
ST1
ST2
ST3
ST
M-993
3