SN54ALS880AJT [TI]
ALS SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, CDIP24, 0.300 INCH, CERAMIC, DIP-24;
| 型号： | SN54ALS880AJT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | ALS SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, CDIP24, 0.300 INCH, CERAMIC, DIP-24 驱动 CD 输出元件 |
| 文件： | 总7页 (文件大小：85K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ALS880A, SN54AS880, SN74ALS880A, SN74AS880
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986
SN54ALS880A, SN54AS880 . . . JT PACKAGE
• 3-State Buffer-Type Outputs Drive Bus
SN74ALS880A, SN74AS880 . . . DW OR NT PACKAGE
Lines Directly
(TOP VIEW)
• Bus-Structured Pinout
• ’ALS873B is Alternative Version With
1
24
23
22
21
20
19
18
17
16
15
14
13
1PRE
1OC
1D1
1D2
1D3
1D4
2D1
2D2
2D3
2D4
2OC
GND
V
CC
1C
Noninverting Outputs
2
• Package Options Include Plastic Small
Outline Packages, Both Plastic and
Ceramic Chip Carriers, and Standard
Plastic and Ceramic 300-mil DIPs
3
1Q1
1Q2
1Q3
1Q4
2Q1
2Q2
2Q3
2Q4
2C
4
5
6
7
• Dependable Texas Instruments Quality and
8
Reliability
9
10
11
12
description
These dual 4-bit registers feature 3-state outputs
designed specifically for bus driving. This makes
these devices particularly suitable for implement-
ing buffer registers, I/O ports, bidirectional bus
drivers, and working registers.
2PRE
SN54ALS880A, SN54AS880 . . . JT PACKAGE
SN74ALS880A, SN74AS880 . . . DW OR NT PACKAGE
(TOP VIEW)
The dual 4-bit latches are transparent D-type.
When the latch enable input (1C or 2C) is high, the
Q outputs will follow the data (D) inputs in inverted
form, according to the function table. When the
latch enable input is taken low, the outputs will be
latched.WhenPREgoeslow, theQoutputsgolow
independently of the clock. The outputs are in a
high-impedance state when OC (output control) is
at a high logic level.
4
3
2 1 28 27 26
5
25
24
1Q2
1Q3
1D2
1D3
1D4
NC
2D1
2D2
2D3
6
23 1Q4
NC
22
2Q1
21
7
8
9
2Q2
20
10
The SN54ALS880A and SN54AS880 are charac-
terized for operation over the full military
temperature range of –55°C to 125°C. The
SN74ALS880A and SN74AS880 are character-
ized for operation from 0°C to 70°C.
2Q3
19
11
12 13 14 15 16 17 18
NC – No internal connection
FUNCTION TABLE
(each latch)
INPUTS
PRE
OUTPUT
OC
L
C
X
H
H
L
D
X
H
L
Q
L
L
H
H
H
X
L
L
L
H
L
X
X
Q
0
Z
H
X
Copyright 1986, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS880A, SN54AS880, SN74ALS880A, SN74AS880
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986
†
logic symbol
2
1OC
EN
23
1
1C
1PRE
C1
S
3
4
5
22
21
20
1D1
1D2
1D3
1D
1Q1
1Q2
1Q3
6
19
1D4
1Q4
11
2OC
EN
14
13
2C
2PRE
C1
S
7
8
9
18
17
16
2D1
2D2
2D3
1D
2Q1
2Q2
2Q3
10
15
2D4
2Q4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for DW, JT, and NT packages.
logic diagram (each quad latch, positive logic)
OC
C
PRE
S
C1
1D
D1
D2
D3
Q1
Q2
Q3
S
C1
1D
S
C1
1D
S
C1
1D
D4
Q4
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS880A, SN54AS880, SN74ALS880A, SN74AS880
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range: SN54ALS880A, SN54AS880 . . . . . . . . . . . . . . . . . –55°C to 125°C
SN74ALS880A, SN74AS880 . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
recommended operating conditions
SN54ALS880A
MIN NOM MAX
SN74ALS880A
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
0.7
–1
12
0.8
–2.6
24
V
IL
I
I
mA
mA
ns
OH
OL
PRE low
C high
15
15
15
15
10
10
0
t
w
Pulse duration
t
su
t
h
Setup time, data before C↓
Hold time, data after C↓
10
ns
ns
°C
10
T
A
Operating free-air temperature
–55
125
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS880A
SN74ALS880A
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
V
V
V
V
V
V
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
I
= 4.5 V to 5.5 V,
= 4.5 V,
= 4.5 V,
= 4.5 V,
= 4.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
I
I
I
I
I
= –0.4 mA
= –1 mA
= –2.6 mA
= 12 mA
= 24 mA
= 2.7 V
V
CC
–2
V –2
CC
OH
OH
OH
OL
OL
V
OH
2.4
3.3
V
2.4
3.2
0.25
0.35
0.25
0.4
0.4
0.5
20
V
OL
V
I
I
I
I
I
I
V
20
–20
0.1
µA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–20
0.1
20
V = 7 V
I
V = 2.7 V
I
V = 0.4 V
I
mA
µA
20
IH
–0.2
–112
21
–0.2
–112
21
mA
mA
IL
‡
V
O
= 2.25 V
–30
–30
O
Outputs high
Outputs low
14
19
20
14
19
20
I
V
CC
= 5.5 V
29
29
mA
CC
Outputs disabled
31
31
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ALS880A, SN74ALS880A
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986
switching characteristics (see Note 1)
V
= 5 V,
V
= 4.5 V to 5.5 V,
CC
CC
C = 50 pF,
L
C
= 50 pF,
L
R1 = 500 Ω,
R2 = 500 Ω,
R1 = 500 Ω,
R2 = 500 Ω,
FROM
TO
PARAMETER
UNIT
(INPUT)
(OUTPUT)
T
= 25°C
T = MIN to MAX
A
A
’ALS880A
SN54ALS880A SN74ALS880A
MIN
TYP
14
9
MAX
19
12
22
18
16
15
17
9
MIN
3
MAX
23
15
31
22
24
21
21
12
21
MIN
3
MAX
20
14
24
21
21
18
18
10
17
t
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PHL
PZH
PZL
PHZ
PLZ
D
Q
ns
3
3
17
14
12
12
13
6
8
8
C
Q
Q
Q
ns
ns
ns
8
8
PRE
OC
6
6
4
4
4
4
2
2
OC
Q
ns
8
11
3
3
NOTE 1: Load circuit and voltage waveforms are shown in Section 1.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS880, SN74AS880
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986
recommended operating conditions
SN54AS880
MIN NOM
SN74AS880
MIN NOM
UNIT
MAX
MAX
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
0.8
–12
32
0.8
–15
48
V
IL
I
I
mA
mA
OH
OL
PRE low
C high
4.5
4
3.5
2.5
2
t
Pulse duration
ns
w
t
su
t
h
Setup time, data before C↓
Hold time, data after C↓
2
ns
ns
°C
1
1
T
Operating free-air temperature
–55
125
0
70
A
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS880
SN74AS880
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
V
V
V
V
V
V
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
I
= 4.5 V to 5.5 V,
= 4.5 V,
= 4.5 V,
= 4.5 V,
= 4.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
I
I
I
I
I
= –2 mA
= –12 mA
= –15 mA
= 32 mA
= 48 mA
= 2.7 V
V
CC
–2
V –2
CC
OH
OH
OH
OL
OL
V
OH
2.4
3.2
V
2.4
3.3
0.30
0.5
V
OL
V
0.35
0.5
50
I
I
I
I
I
I
V
50
–50
0.1
µA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–50
0.1
V = 7 V
I
V = 2.7 V
I
V = 0.4 V
I
mA
µA
20
20
IH
–0.5
–112
118
–0.5
–112
118
122
137
mA
mA
IL
‡
V
O
= 2.25 V
–30
–30
O
Outputs high
Outputs low
73
76
86
73
76
86
I
V
CC
= 5.5 V
122
137
mA
CC
Outputs disabled
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AS880, SN74AS880
DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS079A – D2661, DECEMBER 1982 – REVISED MAY 1986
switching characteristics (see Note 1)
V
= 4.5 V to 5.5 V,
= 50 pF,
CC
C
L
R1 = 500 Ω
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
R2 = 500 Ω
UNIT
T
A
= MIN to MAX
SN54AS880
SN74AS880
MIN
MIN
MAX
11
9
MAX
9.5
8.5
11.5
8
t
t
t
t
t
t
t
t
t
4
4
6
4
4
2
4
2
2
4
4
6
4
4
2
4
2
2
PLH
PHL
PLH
PHL
PHL
PZH
PZL
PHZ
PLZ
D
Q
ns
14
10
11.5
8
C
Q
Q
Q
ns
ns
ns
PRE
OC
10
7.5
10
11
8
6.5
8
OC
Q
ns
9
NOTE 1: Load circuit and voltage waveforms are shown in Section 1.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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Copyright 1998, Texas Instruments Incorporated
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