California Micro Devices PACNLT101Q Datasheet
Non-Linear High Speed Termination IC
n
n
r
PACNLT101
Features
• 16 channel, dual rail clamping action in
a single package
• Provides bus termination independent of line
impedance or loading conditions
• Uses CAMD’s patented EZterm™ technology
• 24-pin QSOP package saves board space and
eases layout in space critical areas.
• One IC replaces and outperforms up to 32 discrete
components.
• Enable pin included
Product Description
CAMD’s non-linear termination IC is specifically designed to minimize overshoot/undershoot disturbances
caused by impedance mismatch reflections and noise on
high-speed transmission lines.
Reflections on high-speed data lines lead to voltage
overshoot and undershoot disturbances, which may
result in data loss or improper system operation. Resistive terminations, when used to terminate these highspeed data lines, increase power consumption and
degrade output levels, resulting in reduced noise immunity. Clamping-type termination is the best overall
solution for applications in which these may be considerations.
This highly integrated non-linear termination IC provides
very effective termination performance for high-speed
data lines under variable loading conditions. The device
supports up to 16 terminated lines per package – each
of which are clamped to both ground and power supply
rail. A typical application may use 4 devices to replace
(and outperform) 64 conventional Schottky diode pairs;
thus providing significant reductions in component and
assembly costs, improvements in manufacturing efficiency and reliability, and savings in allocated board area
for space-critical designs.
Application
• High speed, low voltage buses
Pin Configuratio
Top View
NLT#1
NLT#2
NLT#3
GND
1
2
3
4
5NLT#4 20 NLT#15
6NLT#5 19 NLT#14
7NLT#6 18 NLT#13
8NLT#7 17 NLT#12
9GND 16 GND
10NLT#8 15 NLT#11
11NLT#9 14 Enable
12NLT#10 13 V
PACNLT101
24-Pin QSOP
24
23
22
21
V
DD
V
DD
NLT#16
GND
DD
Standard Part Ordering Informatio
Package Ordering Part Numbe
24 QSOP PACNLT101Q PACNLT101Q
©2001 California Micro Devices Corp. All rights reserved. EZterm™ is a trademark of California Micro Devices
3/8/2001
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
Style Tape & Reel Part Marking
C1601100
1
PACNLT101
gs
g
t
6
3V
T
0
0V
T
5V
T
0
Absolute Maximum Ratin
Parameter Ratin
Maximum DC Voltage on any pin
Minimum DC Voltage on any pin –0.5 V
Continuous current per channel 72 mA
Operating Temperature (Ambient) –40 to 85
Storage Temperature (Ambient) –65 to 150
Power Dissipation @ T = 25
C 0.9 W
˚
.
Operating Characteristics - VDD = 3.3V, Enable = 3.3V, Temperature = –40°C to 85°C
Operating Characteristics
Parameter
Signal Voltage
below GND @ I = –50mA 510 750 mV
current all Channels floating 85 150 mA
V
DD
Enable pin (pin 14) current all Channels floating 10 15 mA
Input Capacitance* Signal voltage = V
Signal voltage = V
ESD protection MIL-STD-883, method 3015*
Response Time 400 ps
*These parameters are guaranteed by design and characterization.
ove V @ I = 50mA
onditions
3.4 pF
DD
3.0 pF
DD/2
ni
C
˚
C
˚
3.
1
kV
4
NI
Operating Characteristics - VDD = 2V, Enable = 2V, Temperature = –40°C to 85°C
Parameter
Signal Voltage
Operating Characteristics
onditions
ove V @ I = 20mA
2.
below GND @ I = –20mA 300 500 mV
current all Channels floating 25 42 mA
V
DD
Enable pin (pin 14) current all Channels floating 3.5 5.5 mA
Input Capacitance* Signal voltage = V
Signal voltage = V
3.5 pF
DD
3.2 pF
DD/2
ESD protection MIL-STD-883, method 3015* 4 kV
Response Time 400 ps
*These parameters are guaranteed by design and characterization.
Operating Characteristics - VDD = 2.5V, Enable = 2.5V, Temperature = 27°C
Parameter
Signal Voltage
Operating Characteristics
onditions
ove V @ I = 30mA 47
2.
below GND @ I = –30mA 375 mV
current all Channels floating 50 mA
V
DD
Enable pin current all Channels floating 6 mA
NI
NI
©2001 California Micro Devices Corp. All rights reserved. EZterm™ is a trademark of California Micro Devices
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
2
3/8/2001
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