ITT - Index of

ITT941, ITT951
MONOSTABLE MULTIVIBRATOR
Rules For Use Of ITT951
1. With Pin 9 connected to V CC and no external
capacitor (CX). the output pulse width is approximately
100 ns.
2. With Pin 9 connected to V CC and an external
capacitor (CX) connected between Pins 10 and
11, the output pulse width (T) is: T 4.5(CX
= 20) with Cx in pF and T in ns.
3. For improved pulse width control. Pin 9 is left
open and a stable external resistor (RX) of
9.0k minimum to 15k maximum is connected
from Pin 10 to V cc. The output pulse width
is given by the expression: T 0.5 RX (CX =
20) with RX in k ,CX in pF and T in ns.
4. The output duty cycle (pulse width/period)
should not exceed 40%. It may be increased
to 50% by adding a 2.0k resistor between Pin
11 and V CC. Higher duty cycles are obtainable
but the output pulse width and performance
are less predictable.
5. The maximum input fall time to trigger: 25
ns for a 1.0 volt swing: 50 ns for a 2.0 volt
swing; 100 ns for a 4.0 volt swing.
6. The minimum pulse width at output Pin 1 is
approximately 100 ns. This pulse width may
be decreased to 50 ns by connecting a 10k
resistor between Pin 5 and VCC.
7. For pulse widths greater than 1.0 s, Pin 1
should be used as the output and inverted if
required.
8. The AC sensitivity of the inputs may be decreased
by connecting a capacitor between
Pin 5 and ground
elECTRICAL CHARACTERISTICS ITT941-1.ITT951-1 (TA = -55°Cto +125°C, VCC = 5.0V ±10%)
Limits
-55°C +25°C +125°C
Symbol Characteristic Min. Max. MinTyp.Max. Min. Max. Units Conditions and Comments
V OH Output High Voltage 2.5 2.5 2.5 yolts VCC = 4.5V.IOH = -0.18 mA
V OL Output Low Voltage 0.4 0.4 0.4 Volts VCC = 5.5V.I OL = 15 mA
VCC = 4.5V.IOL = 15 mA
IpDL Power Dissipation Current 9.0 mA VCC = 5.0V.lnputs = Gnd. Pin 9
With Inputs Grounded Connected to Pin 14
IF Input Load Current -2.93 -2.93 -2.75 mA i VCC = 5.5V. VF = 0.4V
-2.26 -2.26 -2.22 mA VCC = 4.5V. VF = 0.4V
IR Input Leakage Current 5.0 5.0 10.0 !J.A VCC = 5.5V, VR= 4.0V
Ground on other inputs
pd+ Turn Off Delay 40 ns Pin'6 VCC = 5.0V
pd- Turn On Delay 40 ns Pin 1
PW
Pulse Width
941 90 330 ns Pin 1
70 330 ns Pin 6
951 90 220 ns Pin 1
70 160 ns Pin 6
4-15