SN54ALS574B, SN54AS574, SN54AS575
SN74ALS574B, SN74ALS575A, SN74AS574, SN74AS575
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS165B JUNE 1982 REVISED JULY 1995
Copyright
1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
3-State Buffer-Type Noninverting Outputs
Drive Bus Lines Directly
Bus-Structured Pinout
Buffered Control Inputs
SN74ALS575A and
AS575 Have
Synchronous Clear
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), Standard Plastic (N, NT)
and Ceramic (J, JT) 300-mil DIPs, and
Ceramic Flat (W) Packages
description
These octal D-type edge-triggered flip-flops
feature 3-state outputs designed specifically for
bus driving. They are particularly suitable for
implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input. The
SN74ALS575A, SN54AS575, and SN74AS575
may be synchronously cleared by taking the clear
(CLR) input low.
The output-enable (OE) input does not affect
internal operations of the flip-flops. Old data can
be retained or new data can be entered while the
outputs are in the high-impedance state.
The SN54ALS574B, SN54AS574, and
SN54AS575 are characterized for operation over
the full military temperature range of 55
C to
125
C. The SN74ALS574B, SN74ALS575A,
SN74AS574, and SN74AS575 are characterized
for operation from 0
C to 70
C.
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1D
2D
3D
4D
5D
6D
7D
8D
GND
VCC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
SN54ALS574B, SN54AS574 . . . J OR W PACKAGE
SN74ALS574B, SN74AS574 . . . DW OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
2Q
3Q
4Q
5Q
6Q
3D
4D
5D
6D
7D
2D
1D
OE
8Q
7Q
1Q
8D
GND
CLK
V
CC
SN54ALS574B, SN54AS574 . . . FK PACKAGE
(TOP VIEW)
SN54AS575 . . . JT OR W PACKAGE
SN74ALS575A, SN74AS575 . . . DW OR NT PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
CLR
OE
1D
2D
3D
4D
5D
6D
7D
8D
NC
GND
VCC
NC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
NC
SN54AS575 . . . FK PACKAGE
(TOP VIEW)
3 2 1
13 14
5
6
7
8
9
10
11
2Q
3Q
4Q
NC
5Q
6Q
7Q
2D
3D
4D
NC
5D
6D
7D
4
15 16 17 18
NC
GND
NC
NC
CLK
8Q
1D
OE
CLR
NC
28 27 26
25
24
23
22
21
20
19
12
8D
NC
1Q
V
CC
NC No internal connection
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
SN54ALS574B, SN54AS574, SN54AS575
SN74ALS574B, SN74ALS575A, SN74AS574, SN74AS575
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS165B JUNE 1982 REVISED JULY 1995
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Function Tables
SN54ALS574B, SN74ALS574B, SN54AS574, SN74AS574
(each flip-flop)
INPUTS
OUTPUT
OE
CLK
D
Q
L
H
H
L
L
L
L
L
X
Q0
H
X
X
Z
SN74ALS575A, SN54AS575, SN74AS575
(each flip-flop)
INPUTS
OUTPUT
OE
CLR
CLK
D
Q
L
L
X
L
L
H
H
H
L
H
L
L
L
H
L
X
Q0
H
X
H
X
Z
logic symbols
OE
1D
2
1D
3
2D
4
3D
5
4D
6
5D
11
CLK
1Q
19
2Q
18
3Q
17
4Q
16
5Q
15
6Q
14
7Q
13
8Q
12
7
6D
8
7D
9
8D
EN
1
C1
OE
1D
3
1D
4
2D
5
3D
6
4D
7
5D
14
CLK
1Q
22
2Q
21
3Q
20
4Q
19
5Q
18
6Q
17
7Q
16
8Q
15
8
6D
9
7D
10
8D
EN
2
C1
CLR
1R
1
SN54ALS574B, SN74ALS574B,
SN54AS574, SN74AS574
SN74ALS575A, SN54AS575,
SN74AS575
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the DW, J, JT, N, and NT packages.
SN54ALS574B, SN54AS574, SN54AS575
SN74ALS574B, SN74ALS575A, SN74AS574, SN74AS575
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS165B JUNE 1982 REVISED JULY 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagrams (positive logic)
OE
CLK
1D
1Q
1
11
2
19
To Seven Other Channels
1D
C1
OE
CLK
1D
1Q
2
14
3
22
To Seven Other Channels
1D
C1
SN54ALS574B, SN74ALS574B,
SN54AS574, SN74AS574
SN74ALS575A, SN54AS575,
SN74AS575
1
CLR
Pin numbers shown are for the DW, J, JT, N, and NT packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN54ALS574B
55
C to 125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS574B, SN74ALS575A
0
C to 70
C
. . . . . . . . . . . . . . . . .
Storage temperature range
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS574B
SN74ALS574B
SN74ALS575A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.7
0.8
V
IOH
High-level output current
1
2.6
mA
IOL
Low-level output current
12
24
mA
f l k
Clock frequency
ALS574B
0
28
0
35
MHz
fclock
Clock frequency
SN74ALS575A
0
30
MHz
t
Pulse duration
ALS574B, CLK high or low
16.5
14
ns
tw
Pulse duration
SN74ALS575A, CLK high or low
16.5
ns
t
Set p time before CLK
Data
15
15
ns
tsu
Setup time before CLK
SN74ALS575A, CLR
15
ns
th
Hold time after CLK
Data
4
0
ns
th
Hold time after CLK
SN74ALS575A, CLR
0
ns
TA
Operating free-air temperature
55
125
0
70
C
SN54ALS574B, SN54AS574, SN54AS575
SN74ALS574B, SN74ALS575A, SN74AS574, SN74AS575
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS165B JUNE 1982 REVISED JULY 1995
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS574B
SN74ALS574B
SN74ALS575A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
VIK
VCC = 4.5 V,
II = 18 mA
1.2
1.2
V
VCC = 4.5 V to 5.5 V,
IOH = 0.4 mA
VCC 2
VCC 2
VOH
VCC = 4 5 V
IOH = 1 mA
2.4
3.3
V
VCC = 4.5 V
IOH = 2.6 mA
2.4
3.2
VOL
VCC = 4 5 V
IOL = 12 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
20
20
A
IOZL
VCC = 5.5 V,
VO = 0.4 V
20
20
A
II
VCC = 5.5 V,
VI = 7 V
0.1
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
20
A
IIL
VCC = 5.5 V,
VI = 0.4 V
0.2
0.2
mA
IO
VCC = 5.5 V,
VO = 2.25 V
20
112
30
112
mA
Outputs high
11
18
11
18
ALS574B
VCC = 5.5 V
Outputs low
17
27
17
27
ICC
Outputs disabled
17
28
17
28
mA
ICC
Outputs high
10
17
10
17
mA
SN74ALS575A
VCC = 5.5 V
Outputs low
15
24
15
24
Outputs disabled
16
30
16
30
All typical values are at VCC = 5 V, TA = 25
C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX
UNIT
SN54ALS574B
SN74ALS574B
SN74ALS575A
MIN
MAX
MIN
MAX
MIN
MAX
fmax
28
35
30
MHz
tPLH
CLK
Q
4
22
3
14
4
14
ns
tPHL
CLK
Q
4
17
4
14
4
14
ns
tPZH
OE
Q
4
21
3
18
4
18
ns
tPZL
OE
Q
4
26
4
18
4
18
ns
tPHZ
OE
Q
2
16
1
10
2
10
ns
tPLZ
OE
Q
2
25
2
12
3
13
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
SN54ALS574B, SN54AS574, SN54AS575
SN74ALS574B, SN74ALS575A, SN74AS574, SN74AS575
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS165B JUNE 1982 REVISED JULY 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN54AS574, SN54AS575
55
C to 125
C
. . . . . . . . . . . . . . . . . .
SN74AS574, SN74AS575
0
C to 70
C
. . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54AS574
SN54AS575
SN74AS574
SN74AS575
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IOH
High-level output current
12
15
mA
IOL
Low-level output current
32
48
mA
fclock*
Clock frequency
0
100
0
90
MHz
t *
Pulse duration
CLK high
5
5.5
ns
tw*
Pulse duration
CLK low
4
5.5
ns
t
*
Set p time before CLK
Data
3
5.5
ns
tsu*
Setup time before CLK
AS575, CLR high or low
6.5
6.5
ns
th*
Hold time after CLK
Data
3
3
ns
th*
Hold time after CLK
AS575, CLR
0
0
ns
TA
Operating free-air temperature
55
125
0
70
C
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
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