CD74AC175E, CD74AC191, CD74AC191E Selling Leads, Datasheet
MFG:HARRIS Package Cooled:DIP D/C:95+96+
CD74AC175E, CD74AC191, CD74AC191E Datasheet download
Part Number: CD74AC175E
MFG: HARRIS
Package Cooled: DIP
D/C: 95+96+
CD74AC175E, CD74AC191, CD74AC191E
- Table of contents:
Info of CD74AC175E
Info of CD74AC191
Info of CD74AC191E
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About CD74AC175E
PDF/DataSheet Download
Datasheet: CD74AC175E
File Size: 36072 KB
Manufacturer: TI [Texas Instruments]
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About CD74AC191
PDF/DataSheet Download
Datasheet: CD74AC191
File Size: 52938 KB
Manufacturer: TI [Texas Instruments]
Download : Click here to Download
About CD74AC191E
PDF/DataSheet Download
Datasheet: CD74AC191E
File Size: 52938 KB
Manufacturer: TI [Texas Instruments]
Download : Click here to Download
CD74AC191 General Description
The CD74AC191 and CD74ACT191 are asynchronously presettable binary up/down synchronous counters that utilize the Harris Advanced CMOS Logic technology. Presetting the counter to the number on preset data inputs (P0-P3) is accomplished by setting LOW the asynchronous parallel load input (PL). Counting occurs when PL is HIGH, Count Enable (CE) is LOW, and the Up/Down (U/D) input is either LOW for up-counting or HIGH for down-counting. The counter is incremented or decremented synchronously with the LOW-to-HIGH transition of the clock. When an overflow or underflow of the counter occurs, the Terminal Count (TC) output, which is LOW during counting, goes HIGH and remains HIGH for one clock cycle. This output can be used for look-ahead carry in high-speed cascading (see Figure 12). The TC output also initiates the Ripple Clock (RC) output which, normally HIGH, goes LOW and remains LOW for the low-level cascaded using the Ripple Count output.
CD74AC191 Maximum Ratings
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V
DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC Output Source or Sink Current per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC VCC or Ground Current, ICC or IGND (Note 3) . . . . . . . . .±100mA
DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC Output Source or Sink Current per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC VCC or Ground Current, ICC or IGND (Note 3) . . . . . . . . .±100mA
CD74AC191 Features
• Buffered Inputs
• Typical Propagation Delay - 12.8ns at VCC = 5V, TA = 25oC, CL = 50pF
• Exceeds 2kV ESD Protection MIL-STD-883, Method 3015
• SCR-Latchup-Resistant CMOS Process and Circuit Design
• Speed of Bipolar FAST™/AS/S with Significantly Reduced Power Consumption
• Balanced Propagation Delays
• AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply
• ±24mA Output Drive Current - Fanout to 15 FAST™ ICs - Drives 50W Transmission Lines
• Typical Propagation Delay - 12.8ns at VCC = 5V, TA = 25oC, CL = 50pF
• Exceeds 2kV ESD Protection MIL-STD-883, Method 3015
• SCR-Latchup-Resistant CMOS Process and Circuit Design
• Speed of Bipolar FAST™/AS/S with Significantly Reduced Power Consumption
• Balanced Propagation Delays
• AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply
• ±24mA Output Drive Current - Fanout to 15 FAST™ ICs - Drives 50W Transmission Lines
CD74AC191 Connection Diagram
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