SN74AHCT573DW [TI]
OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS; 八路透明D类锁存器具有三态输出
| 型号： | SN74AHCT573DW |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| 文件： | 总6页 (文件大小：89K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54AHCT573, SN74AHCT573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS243L – OCTOBER 1995 – REVISED JANUARY 2000
SN54AHCT573 . . . J OR W PACKAGE
SN74AHCT573 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
EPIC (Enhanced-Performance Implanted
CMOS) Process
Inputs Are TTL-Voltage Compatible
OE
1D
2D
3D
4D
5D
6D
7D
8D
V
CC
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
Latch-Up Performance Exceeds 250 mA Per
JESD 17
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), Thin
Shrink Small-Outline (PW), and Ceramic
Flat (W) Packages, Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) DIPs
GND 10
11 LE
description
SN54AHCT573 . . . FK PACKAGE
(TOP VIEW)
The ’AHCT573 devices are octal transparent
D-type latches. When the latch-enable (LE) input
is high, the Q outputs follow the data (D) inputs.
When LE is low, the Q outputs are latched at the
logic levels of the D inputs.
3
2
1 20 19
18
2Q
3Q
4Q
5Q
6Q
3D
4D
5D
6D
7D
4
5
6
7
8
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low) or the high-impedance state. In
the high-impedance state, the outputs neither
load nor drive the bus lines significantly. The
high-impedance state and increased drive
provide the capability to drive bus lines without
interface or pullup components.
17
16
15
14
9 10 11 12 13
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup
CC
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
OE does not affect the internal operations of the latches. Old data can be retained or new data can be entered
while the outputs are in the high-impedance state.
The SN54AHCT573 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHCT573 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each latch)
INPUTS
OUTPUT
Q
OE
L
LE
H
H
L
D
H
L
H
L
L
L
X
X
Q
0
H
X
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
Copyright 2000, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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
SN54AHCT573, SN74AHCT573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS243L – OCTOBER 1995 – REVISED JANUARY 2000
†
logic symbol
1
OE
LE
EN
C1
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1D
2D
3D
4D
5D
6D
7D
8D
1D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1
OE
11
LE
C1
1D
19
1Q
2
1D
To Seven Other Channels
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
I
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
O
CC
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20 mA
IK
I
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous current through V
Package thermal impedance, θ (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±75 mA
JA
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
‡
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.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT573, SN74AHCT573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS243L – OCTOBER 1995 – REVISED JANUARY 2000
recommended operating conditions (see Note 3)
SN54AHCT573 SN74AHCT573
UNIT
MIN
4.5
2
MAX
MIN
4.5
2
MAX
V
V
V
V
V
Supply voltage
5.5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input voltage
0.8
5.5
0.8
5.5
V
0
0
0
0
V
I
Output voltage
V
CC
–8
V
CC
–8
V
O
I
I
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
mA
mA
ns/V
°C
OH
OL
8
8
20
85
∆t/∆v
20
T
A
–55
125
–40
NOTE 3: All unused inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
TYP
SN54AHCT573 SN74AHCT573
PARAMETER
TEST CONDITIONS
= –50
V
UNIT
V
CC
MIN
4.4
MAX
MIN
4.4
MAX
MIN
4.4
MAX
I
I
I
I
A
4.5
OH
OH
OL
OL
V
4.5 V
4.5 V
OH
OL
= –8 mA
= 50
= 8 mA
3.94
3.8
3.8
A
0.1
0.36
±0.1
±0.25
4
0.1
0.44
±1*
0.1
0.44
±1
V
V
I
I
I
V = V
or GND
0 V to 5.5 V
5.5 V
A
A
A
I
I
CC
V
= V
or GND
±2.5
40
±2.5
40
OZ
CC
O
CC
V = V
or GND,
I
O
= 0
5.5 V
I
CC
One input at 3.4 V,
Other inputs at V
†
5.5 V
1.35
10
1.5
1.5
10
mA
∆I
CC
or GND
CC
or GND
C
C
V = V
5 V
5 V
2.5
3
pF
pF
i
I
CC
= V or GND
CC
V
o
O
* On products compliant to MIL-PRF-38535, this parameter is not production tested at V
This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or V
= 0 V.
CC
†
.
CC
timing requirements over recommended operating free-air temperature range, V = 5 V ± 0.5 V
cc
(unless otherwise noted) (see Figure 1)
T
= 25°C
SN54AHCT573 SN74AHCT573
A
UNIT
MIN
5
MAX
MIN
5
MAX
MIN
5
MAX
t
w
t
su
t
h
Pulse duration, LE high
Setup time, data before LE↓
Hold time, data after LE↓
ns
ns
ns
3.5
1.5
3.5
1.5
3.5
1.5
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT573, SN74AHCT573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS243L – OCTOBER 1995 – REVISED JANUARY 2000
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
T
A
= 25°C
TYP
4.2*
5.1*
4.7*
5.6*
4.1*
5.5*
5.5*
5.4*
5.2
SN54AHCT573 SN74AHCT573
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
PARAMETER
UNIT
ns
MIN
MAX
6*
MIN
1*
1*
1*
1*
1*
1*
1*
1*
1
MAX
6.5*
9*
MIN
1
MAX
6.5
9
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
sk(o)
D
Q
Q
Q
Q
Q
Q
Q
Q
C
C
C
C
C
C
C
= 15 pF
= 15 pF
= 15 pF
= 15 pF
= 50 pF
= 50 pF
= 50 pF
L
L
L
L
L
L
L
7*
1
6.5*
7.5*
6.5*
7.5*
8*
7.5*
9*
1
7.5
9
LE
ns
1
7*
1
7
ns
OE
OE
D
10*
11*
9.5*
7.5
10
1
10
11
1
ns
8*
1
9.5
7.5
10
8.5
10
8
7
1
ns
6.1
8
1
1
5.7
7.5
8.5
7.5
8.5
9
1
8.5
10
1
LE
ns
6.6
1
1
5.1
1
8
1
ns
OE
OE
6.5
1
11
1
11
6.7
1
12
1
12
10.5
1.5
C
C
= 50 pF
= 50 pF
ns
ns
L
L
6.4
9
1
10.5
1
1.5**
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
** On products compliant to MIL-PRF-38535, this parameter does not apply.
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
No load, f = 1 MHz
TYP
UNIT
C
Power dissipation capacitance
16
pF
pd
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT573, SN74AHCT573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS243L – OCTOBER 1995 – REVISED JANUARY 2000
PARAMETER MEASUREMENT INFORMATION
V
CC
Open
GND
S1
R
= 1 kΩ
L
TEST
S1
From Output
Under Test
Test
Point
From Output
Under Test
t
t
/t
Open
PLH PHL
/t
C
C
L
t
V
CC
L
PLZ PZL
/t
(see Note A)
(see Note A)
GND
PHZ PZH
Open Drain
V
CC
LOAD CIRCUIT FOR
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
3-STATE AND OPEN-DRAIN OUTPUTS
3 V
0 V
1.5 V
Timing Input
t
w
t
h
3 V
t
su
3 V
0 V
1.5 V
1.5 V
Input
Input
1.5 V
1.5 V
Data Input
0 V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3 V
0 V
3 V
Output
Control
1.5 V
1.5 V
1.5 V
1.5 V
0 V
t
t
t
t
t
PZL
PLZ
PLH
PHL
Output
Waveform 1
V
≈V
OH
CC
In-Phase
Output
50% V
50% V
50% V
CC
50% V
CC
CC
V
S1 at V
(see Note B)
CC
V
V
+ 0.3 V
OL
V
OL
OL
t
t
t
PHL
PLH
PZH
PHZ
Output
Waveform 2
S1 at GND
V
OH
V
OH
Out-of-Phase
Output
– 0.3 V
OH
50% V
50% V
CC
CC
CC
V
≈0 V
(see Note B)
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A. includes probe and jig capacitance.
C
L
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z = 50 Ω, t ≤ 3 ns, t ≤ 3 ns.
O
r
f
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
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In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
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party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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