74F169 Fairchild Semiconductor, 74F169 Datasheet

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74F169

Manufacturer Part Number
74F169
Description
4-Stage Synchronous Bidirectional Counter
Manufacturer
Fairchild Semiconductor
Datasheet

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© 1999 Fairchild Semiconductor Corporation
74F169SC
74F169SJ
74F169PC
74F169
4-Stage Synchronous Bidirectional Counter
General Description
The 74F169 is a fully synchronous 4-stage up/down
counter. The 74F169 is a modulo-16 binary counter. Fea-
tures a preset capability for programmable operation, carry
lookahead for easy cascading and a U/D input to control
the direction of counting. All state changes, whether in
counting or parallel loading, are initiated by the LOW-to-
HIGH transition of the clock.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Order Number
Package Number
IEEE/IEC
M16A
M16D
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS009488
Features
Connection Diagram
Asynchronous counting and loading
Built-in lookahead carry capability
Presettable for programmable operation
Package Description
April 1988
Revised July 1999
www.fairchildsemi.com

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74F169 Summary of contents

Page 1

... Synchronous Bidirectional Counter General Description The 74F169 is a fully synchronous 4-stage up/down counter. The 74F169 is a modulo-16 binary counter. Fea- tures a preset capability for programmable operation, carry lookahead for easy cascading and a U/D input to control the direction of counting. All state changes, whether in counting or parallel loading, are initiated by the LOW-to- HIGH transition of the clock ...

Page 2

... The Terminal Count (TC) output is normally HIGH and goes LOW, provided that CET is LOW, when a counter reaches zero in the Count Down mode or reaches 15 for the 74F169 in the Count Up mode. The TC output state is not a function of the Count Enable Parallel (CEP) input level. Since the TC signal is derived by decoding the flip-flop states, there exists the possibility of decoding spikes on TC ...

Page 3

Logic Diagram Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays. 3 www.fairchildsemi.com ...

Page 4

Absolute Maximum Ratings Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias V Pin Potential to Ground Pin CC Input Voltage (Note 2) Input Current (Note 5.0 mA Voltage Applied to Output in HIGH State ...

Page 5

AC Electrical Characteristics Symbol Parameter f Maximum Count Frequency MAX t Propagation Delay PLH (PE HIGH or LOW) PHL n t Propagation Delay PLH PHL t Propagation Delay PLH t CET to ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide www.fairchildsemi.com Package Number M16A Package Number M16D 6 ...

Page 7

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 ...

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