ITT - Index of

ITT
ITT5413,ITT7413
DUAL NAND SCHMITT TRIGGERS
- -----
SEMICONDUCTORS
DUAL NAND SCHMITT TRIGGERS
• Operation from Very Slow Edges
• Temperature-Compensated Threshold
• Temperature- Compensated Hysteresis.
Typically O.SV
DUAL-IN-L1NE PACKAGE
AND FLAT PACKAGE
PIN CONFIGURATION
(TOP VIEW)
• High Noise Immunity
IA
VCC
The ITT5413 and ITT7413 dual Schmitt triggers
consist of two identical Schmitt-trigger circuits in
monolithic integrated circuit form. Logically. each
circuit functions as a four-input NAN D gate. but because
of the Schmitt action. the gate has different
input threshold levels for positive- and negativegoing
signals. The hysteresis. or backlash. which is
the difference between the two threshold levels. is
typically 800 mV.
An important design feature is the built-in temperature
compensation which ensures very high
stability of the threshold levels and the hysteresis
over a very wide temperature range. Typically. the
hysteresis changes by 3% over the temperature
range of - 55°C to 125°C and the upper threshold
changes by 1 % over the same range. The
ITT5413/ITT7413 can be triggered from the slowest
of input ramps and still give clean. jitter-free
output signals. It can also be triggered from straight
d-c levels.
These circuits are fully compatible with most other
TTL. DTL. or M SI circuits. The ITT5413 is cha racterized
for operation over the full military temperature
range of -55°C to 125°C; the ITT7413
is characterized for operation from O°C to 70°C.
NC- NO INTERNAL CONNECTION
POSITIVE LOGIC: 'to ABeD
tplN ASSIGNMENTS FOR THESE CIRCUITS ARE
THE SAME FOR
ALL PACKAGES.
absolute maximum ratings over operating
free-air temperature range (unless otherwise noted).
Supply voltage V CC (see Note) .............. , ................ 7V
Input voltage (see Note 1) .................................... 5.5V
Interemitter voltage (see Note 2) ........................ 5.5V
Operating free-air temperature range:
ITT5413 Circuits ........................... -55°C to 125°C
ITT7413 Circuits ........................... -65°C to 150°C
2D
2C
NC
Notes: 1. Voltage values. except interemitter voltage.
are with respect to network ground terminal.
2. This is the voltage between two emitters of
a multiple-emitter transistor.
2B
recommended operating conditions
Supply voltage V CC
Fan-out from each output. N
ITT5413 ITT7413
MIN NOM MAX MIN NOM MAX UNI T
4.5 5 5.5 4.75 5 5.25 V
I High logic level 20 20
Low logic level 10 10
Operating free-air temperature range. T A -55 0 125 0 25 70 °C
Maximum input rise and fall times No restriction No restriction
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