SN75ALS199 Datasheet, PDF (1/12 Pages) Texas Instruments – QUADRUPLE DIFFERENTIAL LINE RECEIVER

SN75ALS199
QUADRUPLE DIFFERENTIAL LINE RECEIVER
D Meets or Exceeds the Requirements of ITU
Recommendations V.10, V.11, X.26, and
X.27
D Designed to Operate Up To 20 Mbaud
D –7 V to 7 V Common-Mode Input Voltage
Range With 300-mV Sensitivity
D 3-State TTL-Compatible Outputs
D High Input Impedance . . . 12 kΩ Min
D Input Hysteresis . . . 120 mV Typ
D Single 5-V Supply Operation
D Low Supply Current Requirement
35 mA Max
D Improved Speed and Power Consumption
Compared to MC3486
SLLS046C – JANUARY 1989 – REVISED MAY 1995
D OR N PACKAGE
(TOP VIEW)
1B 1
1A 2
1Y 3
1, 2EN 4
2Y 5
2A 6
2B 7
GND 8
16 V_CC
15 4B
14 4A
13 4Y
12 3, 4EN
11 3Y
10 3A
9 3B
description
The SN75ALS199 is a monolithic, quadruple line receiver with 3-state outputs designed using advanced,
low-power, Schottky technology. This technology provides combined improvements in bar design, tooling
production, and wafer fabrication, providing significantly less power consumption and permitting much higher
data throughput than other designs. The device meets the specification of ITU Recommendations V.10, V.11,
X.26, and X.27.
The SN75ALS199 features 3-state outputs that permit direct connection to a bus-organized system with a
fail-safe design that ensures the ouptuts will always be high if the inputs are open. The device is optimized for
balanced multipoint bus transmission at rates up to 20 megabits per second. The input features high-input
impedance, input hysteresis for increased noise immunity, and an input sensitivity of ± 300 mV over a
common-mode input voltage range of ± 7 V. It also features an active-high enable function for each of two
receiver pairs. The SN75ALS199 is designed for optimum performance when used with the SN75ALS194
quadruple, differential line driver.
The SN75ALS199 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS
EN
OUTPUT
A–B
Y
VID ≥ 0.3 V
H
H
– 0.3 V < VID < 0.3 V
H
?
VID ≤ – 0.3 V
H
L
X
L
Z
Open
H
H
H = high level, L = low level, X = irrelevant,
? = indeterminate, Z = high impedance (off)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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Copyright © 1995, Texas Instruments Incorporated
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