TI DS3680 Quad telephone relay driver Datasheet

DS3680
QUAD TELEPHONE RELAY DRIVER
SLRS014C – MARCH 1986 – REVISED SEPTEMBER 1995
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D OR N PACKAGE
(TOP VIEW)
Designed for – 52-V Battery Operation
50-mA Output Current Capability
Input Compatible With TTL and CMOS
High Common-Mode Input Voltage Range
Very Low Input Current
Fail-Safe Disconnect Feature
Built-in Output Clamp Diode
Direct Replacement for National DS3680
and Fairchild µA3680
description
1 IN +
1 IN –
2 IN –
2 IN +
3 IN +
3 IN –
4 IN –
1
14
2
13
3
12
4
11
5
10
6
9
7
8
BAT GND
1 OUT
2 OUT
3 OUT
4 OUT
BAT NEG
4 IN +
symbol (each driver)
The DS3680 telephone relay driver is a monolithic
integrated circuit designed to interface – 48-V
relay systems to TTL or other systems in
telephone applications. It is capable of sourcing
up to 50 mA from standard – 52-V battery power.
To reduce the effects of noise and IR drop between
logic ground and battery ground, these drivers are
designed to operate with a common-mode input
range of ± 20 V referenced to battery ground. The
common-mode input voltages for the four drivers
can be different, so a wide range of input elements
can be accommodated. The high-impedance
inputs are compatible with positive TTL and
CMOS levels or negative logic levels. A clamp
network is included in the driver outputs to limit
high-voltage transients generated by the relay coil
during switching. The complementary inputs
ensure that the driver output is off as a fail-safe
condition when either output is open.
BAT GND
IN +
+
IN –
–
OUT
BAT NEG
schematic diagram (each driver)
IN +
15 kΩ
BAT GND
IN –
The DS3680 is characterized for operation from
0°C to 70°C.
OUT
BAT NEG
All resistor values shown are nominal.
Copyright  1995, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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• DALLAS, TEXAS 75265
1
DS3680
QUAD TELEPHONE RELAY DRIVER
SLRS014C – MARCH 1986 – REVISED SEPTEMBER 1995
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range at BAT NEG, VBAT – (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 70 V to 0.5 V
Input voltage range with respect to BAT GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 70 V to 20 V
Input voltage range with respect to BAT NEG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 70 V
Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 20 V
Output current, IO: Resistive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 100 mA
Inductive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 50 mA
Inductive output load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 H
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
NOTES: 1. All voltages are with respect to BAT GND, unless otherwise specified.
2. Differential input voltages are at the noninverting input terminal IN + with respect to the inverting input terminal IN –.
DISSIPATION RATING TABLE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
D
950 mW
7.6 mW/°C
608 mW
N
1150 mW
9.2 mW/°C
736 mW
PACKAGE
recommended operating conditions
Supply voltage, VBAT –
Input voltage, either input
High-level differential input voltage, VIDH
Low-level differential input voltage, VIDL
MIN
MAX
UNIT
– 10
– 20†
– 60
V
20
V
2
†
– 20
20
V
0.8
V
Operating free-air temperature, TA
0
70
°C
† The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet for input voltage levels.
electrical characteristics over recommended operating free-air temperature range, VBAT– = –52 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
IIH
High level input current (into IN + )
High-level
VID = 2 V
VID = 7 V
IIL
Low level input current (into IN + )
Low-level
VID = 0.4 V
VID = – 7 V
VO(on)
On-stage output voltage
IO = 50 mA,
IO(off)
O( ff)
Off stage output current
Off-stage
VO = VBAT –
IR
Clamp diode reverse current
VOK
Output clamp voltage
VO = 0
IO = 50 mA
IO = – 50 mA,
All drivers on
IBAT(on) On-state battery current
IBAT(off) Off-state battery current
‡ All typical values are at TA = 25°C.
2
All drivers off
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MIN
TYP‡
MAX
40
100
375
1000
0.01
5
–1
– 100
VID = 2 V
VID = 0.8 V
– 1.6
– 2.1
–2
– 100
Inputs open
–2
– 100
2
100
VBAT – = 0
0.9
1.2
– 0.9
– 1.2
UNIT
µA
µA
V
µA
µA
V
–2
– 4.4
mA
–1
– 100
µA
DS3680
QUAD TELEPHONE RELAY DRIVER
SLRS014C – MARCH 1986 – REVISED SEPTEMBER 1995
switching characteristics VBAT– = –52 V, TA = 25°C
PARAMETER
ton
toff
TEST CONDITIONS
Turn-on time
VID = 3-V pulse,
L = 1 H,
Turn-off time
MIN
RL = 1 kΩ,
See Figure 2
TYP
MAX
1
10
UNIT
µs
1
10
µs
PARAMETER MEASUREMENT INFORMATION
BAT GND
II
+
VI
IO
Load
–
BAT NEG
VO
– 52 V
– 52 V
Figure 1. Generalized Test Circuit, Each Driver
BAT GND
+
Input
Output
–
RL = 1 kΩ
BAT NEG
L=1H
– 52 V
TEST CIRCUIT
3V
Input
– 1.5 V
0V
ton
toff
VO(on)
Output
– 25 V
– 25 V
VOLTAGE WAVEFORMS
≈ – 52 V
Figure 2. Test Circuit and Voltage Waveforms, Each Driver
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
DS3680
QUAD TELEPHONE RELAY DRIVER
SLRS014C – MARCH 1986 – REVISED SEPTEMBER 1995
APPLICATION INFORMATION
52-V Battery
+
–
SN74XX
9 DS3680
1
2
3
4
5
6
8
7
K1
BAT NEG
1 IN +
1 IN –
13
2 IN +
1 OUT
2 IN –
K2
3 IN +
3 IN –
12
4 IN +
2 OUT
4 IN –
K3
ControlSignal
Source
11
3 OUT
K4
10
4 OUT
K1 – K4
50-V Relay Coils – 50 mA MAX
BAT GND
14
Figure 3. Relay Driver
4
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