Line Driver/Receiver. XR-1488 Datasheet

XR-1488 Driver/Receiver. Datasheet pdf. Equivalent


EXAR XR-1488
XR-1488/1489A
Quad Line Driver/Receiver
GENERAL DESCRIPTION
The XR-1488 is a monolithic quad line driver designed
to interface data terminal equipment with data commu-
nications equipment in conformance with the specifica-
tions of EIA Standard No. RS232C. This extremely ver-
satile integrated circuit can be used to perform a wide
range of applications. Features such as output current
limiting, independent positive and negative power sup-
ply driving elements, and compatibility with all DTL and
TIL logic families greatly enhance the versatility of the
circuit.
The XR-1489A is a monolithic quad line receiver de-
signed to interface data terminal equipment with data
communications equipment. the XR-1489A quad re-
ceiver along with its companion circuit, the XR-1488
quad driver, provide a complete interface system be-
tween DTL or TIL logic levels and the RS232C defined
voltage and impedance levels.
FUNCTIONAL BLOCK DIAGRAMS
ABSOLUTE MAXIMUM RATINGS
Power Supply
XR-1488
XR-1489A
Power Dissipation
Ceramic Package
Derate above + 25°C
Plastic Package
Derate above + 25°C
± 15 Vdc
+ 10 Vdc
1000 mW
6.7 mW/oC
650 mW/oC
5 mW/oC
ORDERING INFORMATION
Part Number
XR-1488N
XR-1488P
XR-1489AN
XR-1489AP
Package
Ceramic
Plastic
Ceramic
Plastic
Operating Temperature
O°C to + 70°C
O°C to +70°C
O°C to + 70°C
O°C to + 70°C
SYSTEM DESCRIPTION
The XR-1488 and XR-1489A are a matched set of quad
line drivers and line receivers designed for interfacing
between TIL/DTL and RS232C data communication
lines.
The XR-1488 contains four independent split supply line
drivers, each with a ± 10 mA current limited output. For
RS232C applications, the slew rate can be reduced to
the 30 V/p.S limit by shunting the output to ground with a
410 pF capacitor. The XR-1489A contains four indepen-
dent line receivers, designed for interfacing RS232C to
TIL/OTL. Each receiver features independently pro-
grammable switching thresholds with hysteresis, and
input protection to ± 30 V. The output can typically
source 3 mA and sink 20 mA.
3-74


XR-1488 Datasheet
Recommendation XR-1488 Datasheet
Part XR-1488
Description Quad Line Driver/Receiver
Feature XR-1488; XR-1488/1489A Quad Line Driver/Receiver GENERAL DESCRIPTION The XR-1488 is a monolithic quad line .
Manufacture EXAR
Datasheet
Download XR-1488 Datasheet




EXAR XR-1488
XR·1488/1489A
ELECTRICAL CHARACTERISTICS
Test Conditions: (V + = + 9.0 ± 1% Vdc, V - = - 9.0 ± 1% Vdc, TA = O°C to + 70°C, unless otherwise noted)
XR-1488 LIMITS
PARAMETERS
MIN TYP MAX UNITS
CONDITIONS
Forward Input Current
1.0 1.6 mA Yin = 0 Vdc
Reverse Input Current
10 p,A Yin = + 5.0 Vdc
Output Voltage High
V+ = +9.0 Vdc, V- = -9.0 Vdc
V+ = + 13.2 Vdc, V- = -13.2 Vdc
+6.0
+9.0
+7.0
+ 10.5
Vdc Yin = 0.8 Vdc,
RL = 3.0 kO
Output Voltage Low
V+ = +9.0 Vdc, V- = -9.0 Vdc
V+ = + 13.2 Vdc, V- = -13.2 Vdc
-6.0
-9.0
-7.0
-10.5
Vdc Yin = 1.9 Vdc,
RL = 3.0 kO
Positive Output Short-Circuit Current
+6.0
+10 +12 mA
Negative Output Short-Circuit Current
-6.0
-10 -12 mA
Output Resistance V+ = V - = 0
Positive Supply Current (RI = 00)
Yin = 1.9 Vdc, V+ = +9.0 Vdc
Yin = 0.8 Vdc, V+ = +9.0 Vdc
Yin = 1.9 Vdc, V+ = + 12 Vdc
Yin = 0.8 Vdc, V + = + 12 Vdc
Yin = 1.9 Vdc, V+ = + 15 Vdc
Yin = 0.8 Vdc, V+ = + 15 Vdc
Negative Supply Current (RL = 00)
Yin = 1.9 Vdc, V- = -9.0 Vdc
Yin = 0.8 Vdc, V- = -9.0 Vdc
Yin = 1.9 Vdc, V- = -12 Vdc
Yin = 0.8 Vdc, V- = -12 Vdc
Yin = 1.9 Vdc, V- = -15 Vdc
Yin = 0.8 Vdc, V- = -15 Vdc
300 Ohms IVol = ±2.0 V
+15
+4.5
+19
+5.5
+20
+6.0
+25
+7.0
+34
+12
mA
mA
-13 -17
00
-18 -23
00
-34
-2.5
Power Dissipation
V+ = 9.0 Vdc, V- = -9.0 Vdc
V+ = 12 Vdc, V- = 12 Vdc
mW
333
576
Switching Characteristics (V + = + 9.0 ± 1% Vdc, V- = - 9.0 ± 1% Vdc, TA = +25°C)
Propagation Delay time (tpd +)
150 200 ns ZL = 3.0k and 15 pF
Fall Time
45 75 ns ZL = 3.0k and 15 pF
Propagation Delay Time (tpd -)
65 120 ns ZL = 3.0k and 15 pF
Rise Time
55 100 ns ZL = 3.0k and 15 pF
3-75



EXAR XR-1488
ELECTRICAL CHARACTERISTICS
Test Conditions: Response control pin is open. (V +
unless otherwise noted)
XR·1488/1489A
+5.0 Vdc ± 1 %, TA = O°C to + 75°C,
XR-1489 LIMITS
PARAMETERS
Positive Input Current
Yin = +25 Vdc
Yin = + 3.0 Vdc
Negative Input Current
Yin = -25 Vdc
Yin = - 3.0 Vdc
Input Turn-On Threshold Voltage
TA = +25°C, VOL :50.45 V
Input Turn-Off Threshold Voltage
TA = +25°C, VOH ~2.5 V
Output Voltage High
Yin = 0.75 V
Input Open Circuit
Output Voltage Low
MIN
3.6
0.43
-3.6
-0.43
1.75
0.75
2.6
2.6
TYP
1.95
0.8
4.0
4.0
0.2
Output Short-Circuit Current
3.0
Power Supply Current
20
Power Dissipation
100
Switching Characteristics (V + = 5.0 Vdc ± 1%, TA = + 25°C)
Propagation Delay Time (tPLH)
25
Rise Time
120
Propagation Delay Time (tpHL)
25
Fall Time
10
MAX UNITS
mA
8.3
CONDITIONS
mA
-
8.3
2.25
Vdc
Vdc IL = -0.5 mA
1.25
Vdc IL = -0.5 mA
5.0
5.0
0.45 Vdc Yin = 3.0 V,
IL = 10 rnA
mA
26 mA Yin = +5.0 Vdc
130 mW Yin = +5.0 Vdc
85 ns RL = 3.9 kO
175 ns RL = 3.9 kO
50 ns RL = 390 kO
20 ns RL = 390 kO
EQUIVALENT SCHEMATIC DIAGRAMS
XR·1488
v' " O - - -__- - - - - - . - - - t - - K..-.-......-y,,f'o,---Q
OUTPUT
INPUTS
XR-1489A
,.....---.----t"'--o " v'
3 OUTPUT
' fGND
3-76







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