TP3155N National Semiconductor, TP3155N Datasheet - Page 6

• Manufacturer Part Number: TP3155N
• Description: IC CIRCUIT TIME SLOT 20-DIP
• Manufacturer: National Semiconductor

Specifications of TP3155N

• Function: Time Slot Assignment
• Interface: Serial
• Number Of Circuits: 1
• Current - Supply: 1mA
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Supply: -
• Power (watts): -
• Other names: *TP3155N

Definitions and Timing Conventions
DEFINITIONS
V
V
V
V
Threshold Region
Valid Signal
Invalid Signal
TIMING CONVENTIONS
For the purposes of this timing specification the following
conventions apply
Input Signals
Period
IH
IL
OH
OL
V
an input level is guaranteed to appear
as a logical one This parameter is to
be measured by performing a function-
al test at reduced clock speeds and
nominal timing (i e not minimum setup
and hold times or output strobes) with
the high level of all driving signals set
to V
applied to the device
V
an input level is guaranteed to appear
as a logical zero to the device This pa-
rameter is measured in the same man-
ner as V
levels set to V
voltages applied to the device
V
which an output placed in a logical one
state will converge when loaded at the
maximum specified load current
V
which an output placed in a logical zero
state will converge when loaded at the
maximum specified load current
The threshold region is the range of in-
put voltages between V
A signal is Valid if it is in one of the valid
logic states (i e above V
V
deemed valid at the instant it enters a
valid state
A signal is Invalid if it is not in a valid
logic state i e when it is in the thresh-
old region between V
ing specifications a signal is deemed
Invalid at the instant it enters the
threshold region
All input signals may be characterized
as V
t
The period of clock signal is designated
as t
monic of the clock signal being speci-
fied
F k
IH
IL
OH
OL
IL
) In timing specifications a signal is
is the d c input level below which
Pxx
is the d c input level above which
IH
is the maximum d c output level to
is the minimum d c output level to
L
10ns
e
and maximum supply voltages
where xx represents the mne-
IH
0 4V V
but with all driving signal low
IL
H
and minimum supply
e
IL
2 4V t
IL
and V
and V
IH
R k
IH
or below
IH
In tim-
10 ns
6
Rise Time
Fall Time
Pulse Width High
Pulse Width Low
Setup Time
Hold Time
Delay Time
Rise times are designated as t
where yy represents a mnemonic of the
signal whose rise time is being speci-
fied t
Fall times are designated as t
where yy represents a mnemonic of the
signal whose fall time is being speci-
fied t
The high pulse width is designated as
t
monic of the input or output signal
whose pulse width is being specified
High pulse widths are measured from
V
The low pulse width is designated as
t
monic of the input or output signal
whose pulse width is being specified
Low pulse widths are measured from
V
Setup times are designated as t
where ww represents the mnemonic of
the input signal whose setup time is be-
ing specified relative to a clock or
strobe input represented by mnemonic
xx Setup times are measured from the
ww Valid to xx Invalid
Hold times are designated as t
where ww represents the mnemonic of
the input signal whose hold time is be-
ing specified relative to a clock or
strobe input represented by mnemonic
xx Hold times are measured from xx
Valid to ww Invalid
Delay
t
mnemonic of the input reference signal
and yy represents the mnemonic of the
output signal whose timing is being
specified relative to xx The mnemonic
may optionally be terminated by an H
or L to specify the high going or low
going transition of the output signal
Maximum delay times are measured
from xx Valid to yy Valid Minimum de-
lay times are measured from xx Valid to
yy Invalid This parameter is tested un-
der the load conditions specified in the
Conditions column of the Timing Speci-
fications section of this data sheet
WzzH
WzzL
Dxxyy
IH
IL
to V
to V
Ryy
Fyy
where zz represents the mne-
where zz represents the mne-
l
IL
IH
H
times
is measured from V
is measured from V
l
L
where xx represents the
are
designated
IH
IL
to V
to V
Hxxww
Swwxx
Ryy
Fyy
IH
IL
as