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74F191SC

P1-P3P4-P6P7-P9P10-P12
74F191 Up/Down Binary Counter with Preset and Ripple Clock
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F191 Rev. 1.0.2 4
Logic Diagram
Figure 4.
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
74F191 Up/Down Binary Counter with Preset and Ripple Clock
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F191 Rev. 1.0.2 5
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Note:
2. Either voltage limit or current limit is sufficient to protect inputs.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol Parameter Rating
T
STG
Storage Temperature –65°C to +150°C
T
A
Ambient Temperature Under Bias –55°C to +125°C
T
J
Junction Temperature Under Bias –55°C to +150°C
V
CC
V
CC
Pin Potential to Ground Pin –0.5V to +7.0V
V
IN
Input Voltage
(2)
–0.5V to +7.0V
I
IN
Input Current
(2)
–30mA to +5.0mA
V
O
Voltage Applied to Output in HIGH State (with V
CC
=
0V)
Standard Output
3-STATE Output
–0.5V to V
CC
–0.5V to +5.5V
Current Applied to Output in LOW State (Max.) twice the rated I
OL
(mA)
Symbol Parameter Rating
T
A
Free Air Ambient Temperature 0°C to +70°C
V
CC
Supply Voltage +4.5V to +5.5V
74F191 Up/Down Binary Counter with Preset and Ripple Clock
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F191 Rev. 1.0.2 6
DC Electrical Characteristics
Symbol Parameter V
CC
Conditions Min. Typ. Max. Units
V
IH
Input HIGH Voltage Recognized as a HIGH Signal 2.0 V
V
IL
Input LOW Voltage Recognized as a LOW Signal 0.8 V
V
CD
Input Clamp Diode Voltage Min. I
IN
=
–18mA –1.2 V
V
OH
Output HIGH
Voltage
10% V
CC
Min. I
OH
=
–1mA 2.5 V
5% V
CC
2.7
V
OL
Output LOW
Voltage
10% V
CC
Min. I
OL
=
20mA 0.5 V
I
IH
Input HIGH Current Max. V
IN
=
2.7V 5.0 µA
I
BVI
Input HIGH Current
Breakdown Test
Max. V
IN
=
7.0V 7.0 µA
I
CEX
Output HIGH Leakage
Current
Max. V
OUT
= V
CC
50 µA
V
ID
Input Leakage Test 0.0 I
ID
=
1.9µA, All Other Pins
Grounded
4.75 V
I
OD
Output Leakage Circuit
Current
0.0 V
IOD
=
150mV, All Other Pins
Grounded
3.75 µA
I
IL
Input LOW Current Max. V
IN
=
0.5V (except CE
) –0.6 mA
V
IN
=
0.5V (CE
) –1.8
I
OS
Output Short-Circuit
Current
Max. V
OUT
=
0.0V –60 –150 mA
I
CC
Power Supply Voltage Max. 38 55 mA
P1-P3P4-P6P7-P9P10-P12

74F191SC

Mfr. #:
Buy 74F191SC
Manufacturer:
ON Semiconductor / Fairchild
Description:
Counter Shift Registers Up/Down Binary Ctr
Lifecycle:
New from this manufacturer.
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