74LS395
器件描述：4-BIT SHIFT REGISTER WITH 3-STATE OUTPUTS
器件厂商：MOTOROLA [Motorola, Inc]
文件大小：196.61KB，共6页
Sponsor by e络盟器件资料摘要：
5-551
FAST AND LS TTL DATA
4-BIT SHIFT REGISTER
WITH 3-STATE OUTPUTS
The SN74LS395 is a 4-Bit Register with 3-state outputs and can operate
in either a synchronous parallel load or a serial shift-right mode, as
determined by the Select input. An asynchronous active LOW Master Reset
(MR) input overrides the synchronous operations and clears the register. An
active HIGH Output Enable (OE) input controls the 3-state output buffers, but
does not interfere with the other operations. The fourth stage also has a
conventional output for linking purposes in multi-stage serial operations.
• Shift Left or Parallel 4-Bit Register
• 3-State Outputs
• Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
C0049C0052 C0049C0051 C0049C0050 C0049C0049 C0049C0048 C0057
C0049 C0050 C0051 C0052 C0053 C0054 C0055
C0049C0054 C0049C0053
C0056
C0086
C0067C0067
C0077C0082
C0079
C0048
C0079
C0049
C0079
C0050
C0079
C0051
C0067C0080C0081
C0051
C0079C0069
C0068C0083 C0080
C0048
C0080
C0049
C0080
C0050
C0080
C0051
C0083 C0071C0078C0068
PIN NAMES LOADING (Note a)
HIGH LOW
P
0
–P
3
D
S
S
CP
MR
OE
O
0
–O
3
Q
3
Parallel Inputs
Serial Data Input
Mode Select Input
Clock (Active LOW) Input
Master Reset (Active LOW) Input
Output Enable (Active HIGH) Input
3-State Register Outputs
Register Output
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
65 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
15 U.L.
5 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
SN74LS395
4-BIT SHIFT REGISTER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN74LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
C0086
C0067C0067
C0061 C0080C0073C0078 C0049C0054
C0071C0078C0068 C0061 C0080C0073C0078 C0056
C0049
C0050
C0051 C0052 C0053 C0054
C0049C0048
C0057
C0049C0053 C0049C0052 C0049C0051 C0049C0050
C0049C0049
C0055
C0083 C0080
C0048
C0080
C0049
C0080
C0050
C0080
C0051
C0068
C0083
C0067C0080
C0079C0069
C0077C0082 C0079
C0048
C0079
C0049
C0079
C0050
C0079
C0051
C0081
C0051
FAST AND LS TTL DATA
4-BIT SHIFT REGISTER
WITH 3-STATE OUTPUTS
The SN74LS395 is a 4-Bit Register with 3-state outputs and can operate
in either a synchronous parallel load or a serial shift-right mode, as
determined by the Select input. An asynchronous active LOW Master Reset
(MR) input overrides the synchronous operations and clears the register. An
active HIGH Output Enable (OE) input controls the 3-state output buffers, but
does not interfere with the other operations. The fourth stage also has a
conventional output for linking purposes in multi-stage serial operations.
• Shift Left or Parallel 4-Bit Register
• 3-State Outputs
• Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
C0049C0052 C0049C0051 C0049C0050 C0049C0049 C0049C0048 C0057
C0049 C0050 C0051 C0052 C0053 C0054 C0055
C0049C0054 C0049C0053
C0056
C0086
C0067C0067
C0077C0082
C0079
C0048
C0079
C0049
C0079
C0050
C0079
C0051
C0067C0080C0081
C0051
C0079C0069
C0068C0083 C0080
C0048
C0080
C0049
C0080
C0050
C0080
C0051
C0083 C0071C0078C0068
PIN NAMES LOADING (Note a)
HIGH LOW
P
0
–P
3
D
S
S
CP
MR
OE
O
0
–O
3
Q
3
Parallel Inputs
Serial Data Input
Mode Select Input
Clock (Active LOW) Input
Master Reset (Active LOW) Input
Output Enable (Active HIGH) Input
3-State Register Outputs
Register Output
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
65 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
15 U.L.
5 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
SN74LS395
4-BIT SHIFT REGISTER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN74LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
C0086
C0067C0067
C0061 C0080C0073C0078 C0049C0054
C0071C0078C0068 C0061 C0080C0073C0078 C0056
C0049
C0050
C0051 C0052 C0053 C0054
C0049C0048
C0057
C0049C0053 C0049C0052 C0049C0051 C0049C0050
C0049C0049
C0055
C0083 C0080
C0048
C0080
C0049
C0080
C0050
C0080
C0051
C0068
C0083
C0067C0080
C0079C0069
C0077C0082 C0079
C0048
C0079
C0049
C0079
C0050
C0079
C0051
C0081
C0051