MC54F399 Motorola, MC54F399 Datasheet
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MC54F399
Manufacturer Part Number
MC54F399
Description
QUAD 2-PORT REGISTER FAST SCHOTTKY TTL
Manufacturer
Motorola
Datasheet
1.MC54F399.pdf
(3 pages)
www.DataSheet4U.com
QUAD 2-PORT REGISTER
feeding into four edge-triggered flip flops. A common Select input determines
which of the two 4-bit words is accepted. The selected data enters the flip-
flops on the rising edge of the clock. The MC54/74F399 is the 16-pin version
of the MC54/74F398, with only the Q outputs of the flip-flops available.
The MC54/74F399 is the logical equivalent of a quad 2-input multiplexer
Select Inputs from Two Data Sources
Fully Positive Edge-Triggered Operation
I 1a
I 1c
I 0d
I 1d
CP
I 0c
I 0a
I 0b
I 1b
S
NOTE:
This diagram is provided only for the understanding of logic operations and
should not be used to estimate propagation delays.
V CC
S
16
1
CONNECTION DIAGRAM (TOP VIEW)
Q a
15
Q d
2
LOGIC DIAGRAM
I 0d
14
I 0a
3
I 1a
I 1d
13
4
I 1c
I 1b
12
5
I 0c
I 0b
11
6
FAST AND LS TTL DATA
Q c
Q b
10
7
CP
CP
CP
CP
D
D
D
D
CP
GND
4-192
9
8
Q a
Q b
Q c
Q d
9
1
16
16
QUAD 2-PORT REGISTER
MC54/74F399
16
ORDERING INFORMATION
1
1
CP
MC54FXXXJ
MC74FXXXN
MC74FXXXD
S
FAST
1
I 0a I 1a I 0b I 1b I 0c I 1c I 0d I 1d
Q a
LOGIC SYMBOL
3
2
4 6 5 11 12 14 13
V CC = PIN 16
GND = PIN 8
SCHOTTKY TTL
Q b
7
Ceramic
Plastic
SOIC
10
Q c
CASE 751B-03
CASE 620-09
CASE 648-08
CERAMIC
N SUFFIX
D SUFFIX
J SUFFIX
PLASTIC
SOIC
Q d
15
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MC54F399 Summary of contents
Page 1
QUAD 2-PORT REGISTER The MC54/74F399 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-triggered flip flops. A common Select input determines which of the two 4-bit words is accepted. The selected data enters the flip- ...
Page 2
The MC54/74F398 is a high-speed quad 2-port register. It will select four bits of data from either of two sources (Ports) under control of a common Select input (S). The selected data is transferred to a 4-bit output register synchronous ...
Page 3
AC CHARACTERISTICS Symbol Parameter f max Maximum Clock Frequency t PLH Propagation Delay t PHL OPERATING REQUIREMENTS Symbol Parameter t s (H) Setup Time, HIGH or LOW ...