参数资料
型号: M-986-2A1P
厂商: IXYS Integrated Circuits Division
文件页数: 6/13页
文件大小: 0K
描述: IC TRANSCEIVER MF 2CHAN 40-DIP
产品变化通告: M-986 Transceiver Obsolescence 3/Feb/2011
标准包装: 9
类型: 收发器
驱动器/接收器数: 2/2
电源电压: 4.75 V ~ 5.25 V
安装类型: 通孔
封装/外壳: 40-DIP(0.600",15.24mm)
供应商设备封装: 40-DIP
包装: 管件
Electrical Characteristics/Temperature Range
Parameter
Test ConditionsMin
Typ
Max
Unit
I
CC
Supply current
f = 20.5 MHz, V
CC = 5.5V,
-
50
75
mA
T
A = 0 to 70 C
V
OH
High-level output voltage
I
OH = MAX
2.4
3
-
V
I
OH = 20 A
V
CC -0.4
-
V
OL
Low-level output voltage
I
OL = MAX
-
0.3
0.6
V
I
OZ
Off-state output current
V
CC = MAX
VO = 2.4 V
-
20
A
VO = 0.4 V
-
-20
A
I
Input current
V
I = VSS to VCC
Except CLKIN
-
±20
A
CLKIN
-
±50
A
C
I
Input capacitance
Data bus
f = 1 MHz, all other pins 0 V
-
25
-
pF
All others
-
15
-
pF
C
O
Output capacitance
Data bus
-
25
-
pF
All others
-
10
-
pF
Supply voltage range, V
CC
-0.3 V to 7 V
Input voltage range
-0.3 V to 15 V
Output voltage range
-0.3 V to 15 V
Ambient air temperature range
0 to 150C
Storage temperature range
-45C to 150C
www.clare.com
M-986-2A1
Rev. 3
Absolute Maximum Ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at these or
any other conditions beyond those indicated in the opera-
tional sections of this data sheet is not implied. Exposure of
the device to the absolute maximum ratings for an extend-
ed period may degrade the device and effect its reliability.
2
Absolute Maximum Ratings Over Specified
Temperature Range
When binary input/output is selected, the M-986-2A1
encodes the received R1 MF tone pair into a 4 bit
binary format. The digital input to the M-986-2A1 that
selects the transmitted R1 MF tone pair must also be
coded in a 4 bit binary format.
Enable/Disable Channel (ENC): When a channel is
disabled, the receiver does not process its codec
input for R1 MF tones, and the transmitter does not
respond to transmit commands. If a transmit com-
mand is given while the channel is enabled, the “tone
off” command must be given before the channel is dis-
abled. Disabling the channel does not automatically
shut off the transmitter. When a channel is enabled,
the receiver and transmitter for that channel function
normally.
Long/Short KP Tone Detection Time (KPL): When
long KP tone detection is selected, the minimum on
time for the KP tone to be detected is 55 milliseconds.
When short KP tone detection is selected, the mini-
mum on time for the KP tone to be detected is 30 mil-
liseconds (the same as the minimum on time for the
rest of the MF tones).
Enable MF Tone Detection After Reception of KP
(KPEN): When this feature is enabled, MF tone detec-
tion is enabled after reception of the KP tone, and dis-
abled after reception of ST, ST1, ST2, or ST3 tones.
When this feature is disabled, MF tone detection is
always enabled. Select A or -law input/output (AMU)
for A-law encoding, this bit is set to a 1, for -law
encoding it is set to 0.
Function Description
The M-986-2A1 can be set up for various modes of
operation by writing two configuration bytes to the
coprocessor port. The format of the two configuration
bytes is shown in the Configuration Table on page 3
and the configuration options are described in the fol-
lowing paragraphs.
Configuration Options
External/Internal Codec Clock (ECLK): If external
codec clocking is selected, an external clocking source
provides an 8 kHz transmit framing clock and an 8 kHz
receive framing clock. It also provides a serial bit clock
with a frequency that is a multiple of 8 kHz between
216 kHz and 2.496 MHz for exchange of data via the
serial ports. When internal codec clocking is selected,
the M-986-2A1 provides an 8 kHz framing clock and a
2.048 MHz serial bit clock.
2 of 6/Binary Input/Output (IOM): When the 2-of-6
input/output is selected, the M-986-2A1 encodes the
received R1 MF tone pair into a 6-bit format, where
each bit represents one of the six possible frequencies.
A logic high level indicates the presence of a frequen-
cy. The digital input to the M-986-2A1 that selects the
transmitted R1 MF tone pair must also be coded in the
2-of-6 format.
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