HD74LS164_15 Datasheet, PDF (4/11 Pages) Renesas Technology Corp – 8-Bit Parallel-Out Serial-in Shift Register

HD74LS164
Function Table
Inputs
Outputs
Clear
Clock
A
B
Q_A
Q_B……Q_H
L
X
X
X
L
L
L
H
L
X
X
Q_A0
Q_B0
Q_H0
H
↑
H
H
H
Q_An
Q_Gn
H
↑
L
X
L
Q_An
Q_Gn
H
↑
X
L
L
Q_An
Q_Gn
Notes: 1. H; high level, L; low level, X; irrelevant
2. ↑; transition from low to high level
3. Q_A0, Q_B0, Q_H0; the level of Q_A, Q_B, or Q_H, respectively, before the indicated steady-state input conditions
were established.
4. Q_An, Q_Gn; the level of Q_A or Q_G before the most-recent ↑ transition of the clock; indicates a one-bit shift.
Block Diagram
Clear
Clock
Serial A
Inputs B
Clear
R QA
Clear
R QB
Clear
R QC
Clear
R QD
Clear
R QE
Clear
R QF
Clear
R QG
Clear
R QH
CK
S QA
CK
S QB
CK
S QC
CK
S QD
CK
S QE
CK
S QF
CK
S QG
CK
S QH
Output Output Output Output Output Output Output Output
QA
QB
QC
QD
QE
QF
QG
QH
Absolute Maximum Ratings
Item
Symbol
Ratings
Supply voltage
V_CC
7
Input voltage
V_IN
7
Power dissipation
P_T
400
Storage temperature
Tstg
–65 to +150
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Clock frequency
Clock pulse width
Clear pulse width
Data setup time
Data hold time
Symbol
V_CC
I_OH
I_OL
T_opr
ƒ_clock
t_{w (CK)}
t_{w (CLR)}
t_su
t_h
Min
4.75
—
—
–20
0
20
20
15
5
Typ
5.00
—
—
25
—
—
—
—
—
Max
5.25
–400
8
75
25
—
—
—
—
Unit
V
V
mW
°C
Unit
V
µA
mA
°C
MHz
ns
ns
ns
ns
Rev.2.00, Feb.18.2005, page 2 of 8