QUAD 2-PORT REGISTER
The MC54/74F398 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-trig...
QUAD 2-PORT REGISTER
The MC54/74F398 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 flipflops on the rising edge of the clock.
Select Inputs from Two Data Sources Fully Positive Edge-Triggered Operation Both True and Complement Outputs
CONNECTION DIAGRAM (TOP VIEW)
VCC Qd Qd I0d I1d I1c I0c Qc Qc CP 20 19 18 17 16 15 14 13 12 11
MC54/74F398
QUAD 2-PORT REGISTER FAST™
SCHOTTKY TTL
20 1
J SUFFIX CERAMIC CASE 732-03
12 S Qa
34 Qa I0a
56
78
9 10
I1a I1b I0b Qb Qb GND
LOGIC DIAGRAM
I0a S D Qa I1a CP Qa
I0b D Qb
I1b CP Qb
I0c D Qc
I1c CP Qc
I0d D Qd
I1d CP Qd
CP
NOTES: This diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
FAST AND LS TTL DATA 4-189
20 1
N SUFFIX PLASTIC CASE 738-03
20 1
DW SUFFIX SOIC
CASE 751D-03
ORDERING INFORMATION
...
