TL/F/9486
5
November 1994
54F/74F161A
#
54F/74F163A
Synchronous Presettable Binary Counter
General Description
The ’F161A and ’F163A are high-speed synchronous modu-
lo-16 binary counters. They are synchronously presettable
for application in programmable dividers and have two types
of Count Enable inputs plus a Terminal Count output for
versatility in forming synchronous multi-stage counters. The
’F161A has an asynchronous Master-Reset input that over-
rides all other inputs and forces the outputs LOW. The
’F163A has a Synchronous Reset input that overrides
counting and parallel loading and allows the outputs to be
simultaneously reset on the rising edge of the clock. The
’F161A and ’F163A are high-speed versions of the ’F161
and ’F163.
Features
Y
Synchronous counting and loading
Y
High-speed synchronous expansion
Y
Typical count frequency of 120 MHz
Y
Guaranteed 4000V minimum ESD protection
Commercial
Military
Package
Number
Package Description
74F161APC
N16E
16-Lead (0.300
×
Wide) Molded Dual-In-Line
54F161ADM (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F161ASC (Note 1)
M16A
16-Lead (0.150
×
Wide) Molded Small Outline, JEDEC
16-Lead (0.300
×
Wide) Molded Small Outline, EIAJ
74F161ASJ (Note 1)
M16D
54F161AFM (Note 2)
W16A
16-Lead Cerpack
54F161ALM (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
74F163APC
N16E
16-Lead (0.300
×
Wide) Molded Dual-In-Line
54F163ADM (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F163ASC (Note 1)
M16A
16-Lead (0.150
×
Wide) Molded Small Outline, JEDEC
16-Lead (0.300
×
Wide) Molded Small Outline, EIAJ
74F163ASJ (Note 1)
M16D
54F163AFM (Note 2)
W16A
16-Lead Cerpack
54F163ALM (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
Note 1:
Devices also available in 13
×
reel. Use suffix
e
SCX and SJX.
Note 2:
Military grade device with environmental and burn-in processing. Use suffix
e
DMQB, FMQB and LMQB.
Connection Diagrams
Pin Assignment
for DIP, SOIC and Flatpak
’F161A
TL/F/9486–1
Pin Assignment
for LCC
’F161A
TL/F/9486–2
Pin Assignment
for DIP, SOIC and Flatpak
’F163A
TL/F/9486–7
Pin Assignment
for LCC
’F163A
TL/F/9486–8
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M75/Printed in U. S. A.