74ac191 Fairchild Semiconductor, 74ac191 Datasheet

no-image

74ac191

Manufacturer Part Number
74ac191
Description
74ac191 Up/down Counter With Preset And Ripple Clock
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
74ac191SCX
Manufacturer:
SHINKOH
Quantity:
4 728
Part Number:
74ac191SJX
Manufacturer:
GENESIS
Quantity:
870
© 1999 Fairchild Semiconductor Corporation
74AC191SC
74AC191SJ
74AC191MTC
74AC191PC
74AC191
Up/Down Counter with Preset and Ripple Clock
General Description
The AC191 is a reversible modulo 16 binary counter. It fea-
tures synchronous counting and asynchronous presetting.
The preset feature allows the AC191 to be used in pro-
grammable 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 ris-
ing edge of the clock.
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbols
FACT
Order Number
is a trademark of Fairchild Semiconductor Corporation.
Package Number
MTC16
IEEE/IEC
M16A
M16D
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
DS009940
Features
Connection Diagram
Pin Descriptions
I
High speed—133 MHz typical count frequency
Synchronous counting
Asynchronous parallel load
Cascadable
Outputs source/sink 24 mA
CC
Pin Names
CE
CP
P
PL
U /D
Q
RC
TC
0
0
–P
reduced by 50%
–Q
Package Description
3
3
Count Enable Input
Clock Pulse Input
Parallel Data Inputs
Asynchronous Parallel Load Input
Up/Down Count Control Input
Flip-Flop Outputs
Ripple Clock Output
Terminal Count Output
November 1988
Revised November 1999
Description
www.fairchildsemi.com

Related parts for 74ac191

74ac191 Summary of contents

Page 1

... MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC191PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. ...

Page 2

RC Truth Table Inputs (Note Functional Description The AC191 is a synchronous up/down counter. The AC191 is organized as ...

Page 3

Functional Description (continued) FIGURE 1. N-Stage Counter Using Ripple Clock FIGURE 2. Synchronous N-Stage Counter Using Ripple Carry/Borrow FIGURE 3. Synchronous N-Stage Counter with Parallel Gated Carry/Borrow Logic Diagram Please note that this diagram is provided only for the understanding ...

Page 4

Absolute Maximum Ratings Supply Voltage ( Input Diode Current ( 0. 0. Input Voltage ( Output Diode Current ( ...

Page 5

AC Electrical Characteristics Symbol Parameter f Maximum Count MAX Frequency t Propagation Delay PLH Propagation Delay PHL Propagation Delay PLH Propagation Delay PHL ...

Page 6

AC Operating Requirements Symbol Parameter t Setup Time, HIGH or LOW Hold Time, HIGH or LOW Setup Time, LOW Hold Time, LOW H ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body Package Number M16A 7 www.fairchildsemi.com ...

Page 8

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide www.fairchildsemi.com Package Number M16D 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 9 www.fairchildsemi.com ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

Related keywords