74LS190, 74LS191, 74LS191D Selling Leads, Datasheet
MFG:168 Package Cooled:224 D/C:N/A
74LS190, 74LS191, 74LS191D Datasheet download
Part Number: 74LS190
MFG: 168
Package Cooled: 224
D/C: N/A
74LS190, 74LS191, 74LS191D
- Table of contents:
Info of 74LS190
Info of 74LS191
Info of 74LS191D
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About 74LS190
PDF/DataSheet Download
Datasheet: 74LS190
File Size: 106709 KB
Manufacturer: HITACHI [ Hitachi Semiconductor ]
Download : Click here to Download
About 74LS191
PDF/DataSheet Download
Datasheet: 74LS191
File Size: 100783 KB
Manufacturer: Hitachi Semiconductor
Download : Click here to Download
About 74L71
PDF/DataSheet Download
Datasheet: 74L71
File Size: 105703 KB
Manufacturer: TI [Texas Instruments]
Download : Click here to Download
74LS190 General Description
The SN54/74LS190 is a synchronous UP/DOWN BCD Decade (8421) Counter and the SN54/74LS191 is a synchronous UP/DOWN Modulo-16 Binary Counter. State changes of the counters are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
An asynchronous Parallel Load (PL) input overrides counting and loads the data present on the Pn inputs into the flip-flops, which makes it possible to use the circuits as programmable counters. A Count Enable (CE) input serves as the carry / borrow input in multi-stage counters. An Up /Down Count Control (U/D) input determines whether a circuit counts up or down. A Terminal Count (TC) output and a Ripple Clock (RC) output provide overflow/underflow indication and make possible a variety of methods for generating carry / borrow signals in multistage counter applications.
74LS190 Features
• Low Power . . . 90 mW Typical Dissipation
• High Speed . . . 25 MHz Typical Count Frequency
• Synchronous Counting
• Asynchronous Parallel Load
• Individual Preset Inputs
• Count Enable and Up/Down Control Inputs
• Cascadable
• Input Clamp Diodes Limit High Speed Termination Effects
• High Speed . . . 25 MHz Typical Count Frequency
• Synchronous Counting
• Asynchronous Parallel Load
• Individual Preset Inputs
• Count Enable and Up/Down Control Inputs
• Cascadable
• Input Clamp Diodes Limit High Speed Termination Effects
74LS190 Connection Diagram
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