onsemi 74AC191PC
Obsolete
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Supply Chain
Harmonized Tariff Schedule (HTS) Code8542.39.00.60
Introduction Date1987-07-01
Lifecycle StatusObsolete (Last Updated: 4 months ago)
LTB Date2011-03-02
LTD Date2011-09-02
Related Parts
NXP Semiconductors74HCT160N,652
Decade Counter, HCT Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDIP16
Descriptions
Descriptions of onsemi 74AC191PC provided by its distributors.
Binary Counter, AC Series, Synchronous, Positive Edge Triggered, Bidirectional, CMOS, PDIP16
Counter Single 4-Bit Async Binary UP/Down 16-Pin PDIP W Rail
Binary Counter Logic IC; Logic Type:Binary Counter; Logic Family:AC; Logic Base Number:74191; Supply Voltage Max:6V; Package/Case:16-DIP; No. of Pins:16; Leaded Process Compatible:Yes; Number of Circuits:4 ;RoHS Compliant: Yes
IC, LOGIC, 74AC, UP/DOWN COUNTER; Counter Type:Binary, Up / Down; Clock Frequency:133MHz; Count Maximum:15; Supply Voltage Range:2V to 6V; Logic Case Style:DIP; No. of Pins:16; Operating Temperature Range:-40°C to +85°C; SVHC:No SVHC (19-Dec-2011); Clock Frequency Max:133MHz; Count Max:16; Counter Measuring Functions:Up / Down Counter; Logic IC Base Number:74191; Logic IC Family:AC; Logic IC Function:Up/Down Counter with Preset and Ripple Clock; Package / Case:DIP; Supply Voltage Max:6V; Supply Voltage Min:2V; Termination Type:Through Hole
The AC191 is a reversible modulo 16 binary counter. It features synchronous counting and asynchronous presetting. The preset feature allows the AC191 to be used in programmable dividers. The Count Enable input, the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multistage counters. In the counting modes, state changes are initiated by the rising edge of the clock. Product Highlights: ICC reduced by 50% High speed-133 MHz typical count frequency Synchronous counting Asynchronous parallel load Cascadable Outputs source/sink 24 mA
Manufacturer Aliases
onsemi has several brands around the world that distributors may use as alternate names. onsemi may also be known as the following names:
- ON Semiconductor
- ONS
- ONSEMICON
- ON SEM
- ON SEMICONDUCTO
- ON SEMICONDUCTORS
- ONSEMIC
- ON Semicondu
- OSC
- ONSE
- ON SEMICOND
- ON Semiconductor / Fairchild
- SCG
- ON Semiconductor Cor
- ON SEMICO
- ONSM
- ON SEMICONDUCTOR CORP
- onsemi / Fairchild
- MOT/ON SEMI
- Fairchild/ONSemiconductor
- ON Semiconductor Corporation
- ON4
- ON Semi - ON Semiconductor
- ON SEMICONDUCT
- ON-SEMI SCG
- ON Semiconductor Inc.
- onsemiconductor
- On Semiconductor Ltd
Technical Specifications
Physical
Case/PackageDIP
MountThrough Hole
Number of Pins16
Number of Terminals16
Technical
Clock Edge Trigger TypePositive Edge
DirectionBidirectional
Frequency65 MHz
Load Capacitance50 pF
Logic FunctionCounter
Low Level Output Current12 mA
Max Operating Temperature85 °C
Max Supply Voltage6 V
Min Operating Temperature-40 °C
Min Supply Voltage2 V
Number of Bits4
Number of Bits per Element4
Number of Circuits1
Number of Elements1
Number of Input Lines4
Number of Output Lines4
Operating Supply Voltage3 V
Propagation Delay16 ns
Sync/AsyncSynchronous
Temperature GradeIndustrial
Turn-On Delay Time20 ns
Dimensions
Height - Seated (Max)5.08 mm
Length19.305 mm
Terminal Pitch2.54 mm
Width7.62 mm
Compliance
Environmental Classification
Lead FreeLead Free
REACH SVHCYes
RoHSCompliant
Compliance Statements