DS34LV87 NSC [National Semiconductor], DS34LV87 Datasheet

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DS34LV87

Manufacturer Part Number
DS34LV87
Description
Enhanced CMOS Quad Differential Line Driver
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 2004 National Semiconductor Corporation
DS34LV87T
Enhanced CMOS Quad Differential Line Driver
General Description
The DS34LV87T is a high speed quad differential CMOS
driver that meets the requirements of both TIA/EIA-422-B
and ITU-T V.11. The CMOS DS34LV87T features low static
I
and power conscious applications. The TRI-STATE
EN, allows the device to be disabled when the device is not
in use to minimize power. The dual enable scheme allows for
flexibility in turning devices on or off.
Protection diodes protect all the driver inputs against elec-
trostatic discharge. The driver and enable inputs (DI and EN)
are compatible with LVTTL and LVCMOS devices. Differen-
tial outputs have the same V
version. The outputs have enhanced ESD Protection provid-
ing greater than 7 kV tolerance.
Connection Diagram
CC
TRI-STATE
of 100 µA max which makes it ideal for battery powered
®
is a registered trademark of National Semiconductor Corporation.
See NS Package Number M16A
Order Number DS34LV87TM
Dual-In-Line Package
Top View
OD
(≥2V) guarantee as the 5V
DS012645
01264501
®
enable,
Features
n Meets TIA/EIA-422-B (RS-422) and ITU-T V.11
n Interoperable with existing 5V RS-422 networks
n Guaranteed V
n Balanced output crossover for low EMI (typical within 40
n Low power design (330 µW
n ESD ≥ 7 kV on cable I/O pins (HBM)
n Industrial temperature range
n Guaranteed AC parameter:
n Pin compatible with DS26C31
n Available in SOIC packaging
Truth Table
L = Low logic state
X = Irrelevant
H = High logic state
Z = TRI-STATE
recommendation
mV of 50% voltage level)
— Maximum driver skew: 2 ns
— Maximum transition time: 10 ns
Enables
EN
H
H
L
OD
Input
DI
H
X
L
of 2V min over operating conditions
@
DO+
H
Z
L
3.3V static)
Outputs
November 2000
www.national.com
DO−
H
Z
L

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DS34LV87 Summary of contents

Page 1

... Enhanced CMOS Quad Differential Line Driver General Description The DS34LV87T is a high speed quad differential CMOS driver that meets the requirements of both TIA/EIA-422-B and ITU-T V.11. The CMOS DS34LV87T features low static I of 100 µA max which makes it ideal for battery powered CC and power conscious applications ...

Page 2

... CC ± Recommended Operating ± 150 mA Conditions −0.5V to +7V Supply Voltage (V @ +25˚C Operating Free Air 1226 mW Temperature Range (T DS34LV87T Input Rise and Fall Time −65˚C to +150˚C (Notes 2, 3) Conditions ∞ (No Load 100Ω Figure 3900Ω (V.11), ...

Page 3

Switching Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter t Differential Propagation Delay PHLD High to Low t Differential Propagation Delay PLHD Low to High t Differential Skew SKD |t –t | PHLD PLHD t ...

Page 4

Parameter Measurement Information FIGURE 2. Differential Driver Propagation Delay and Transition Time Test Circuit FIGURE 3. Differential Driver Propagation Delay and Transition Time Waveforms Note 10: Generator waveform for all tests unless otherwise specified MHz, Duty Cycle ...

Page 5

Parameter Measurement Information FIGURE 5. Driver Single-Ended TRI-STATE Waveforms Typical Application Information General application guidelines and hints for differential driv- ers and receivers may be found in the following application notes: AN-214, AN-457, AN-805, AN-847, AN-903, AN-912, AN-916 ...

Page 6

Typical Application Information www.national.com (Continued) FIGURE 7. Typical Driver Output Waveforms 6 01264509 ...

Page 7

... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. inches (millimeters) unless otherwise noted 16-Lead Molded Small Outline Package (M) Order Number DS34LV87TM NS Package Number M16A 2. A critical component is any component of a life ...

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