Philips Semiconductors Product specification
74F1648-bit serial-in parallel-out shift register
2000 Dec 18
3
LOGIC DIAGRAM
DQ
RD
Q0
1
Dsa
Dsb
2
CP
MR
3
8
9
V
CC
= Pin 14
GND = Pin 7
DQ
RD
Q1
4
DQ
RD
Q2
5
DQ
RD
Q3
6
DQ
RD
Q4
10
DQ
RD
Q5
11
DQ
RD
Q6
12
DQ
RD
Q7
13
SF00715
CPCPCPCPCPCPCPCP
FUNCTION TABLE
INPUTS OUTPUTS OPERATING MODE
MR CP Dsa Dsb Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
L X X X L L L L L L L L Reset (Clear)
H ↑ l l L q0 q1 q2 q3 q4 q5 q6
H ↑ l h L q0 q1 q2 q3 q4 q5 q6 Shift
H ↑ h l L q0 q1 q2 q3 q4 q5 q6
H ↑ h h H q0 q1 q2 q3 q4 q5 q6
H = High voltage level
h = High voltage level one setup time prior to the Low-to-High clock transition.
L = Low voltage level
l = Low voltage level one setup time prior to the Low-to-High clock transition.
qn = Lower case letter indicate the state of the referenced output one setup time prior to the Low-to-High clock transition.
X = Don’t care
↑ = Low-to-High clock transition
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL PARAMETER RATING UNIT
V
CC
Supply voltage –0.5 to +7.0 V
V
IN
Input voltage –0.5 to +7.0 V
I
IN
Input current –30 to +5 mA
V
OUT
Voltage applied to output in High output state –0.5 to V
CC
V
I
OUT
Current applied to output in Low output state 40 mA
p
p
Commercial Range 0 to +70
°
amb
-
Industrial Range –40 to +85
T
stg
Storage temperature range –65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
LIMIT
MIN NOM MAX
V
CC
Supply voltage 4.5 5.0 5.5 V
V
IH
High-level input voltage 2.0 V
V
IL
Low-level input voltage 0.8 V
I
Ik
Input clamp current –18 mA
I
OH
High-level output current –1 mA
I
OL
Low-level output current 20 mA
p
p
Commercial Range 0 +70
°
amb
-
Industrial Range –40 +85
