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
description
The ’AHC573 devices are octal transparent
D-type latches designed for 2-V to 5.5-V V
operation.
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.
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.
CC
SN74AHC573 . . . DB, DGV, DW, N, OR PW PACKAGE
SN54AHC573 ...J OR W PACKAGE
(TOP VIEW)
LE
20
19
18
17
16
15
14
13
12
11
V
8Q
CC
V
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
LE
18
17
16
15
14
7Q1Q
CC
2Q
3Q
4Q
5Q
6Q
OE
1
1D
2
2D
3
3D
4
4D
5
5D
6
6D
7
7D
8
8D
9
GND
SN54AHC573 . . . FK PACKAGE
3D
4D
5D
6D
7D
10
(TOP VIEW)
2D1DOE
3212019
4
5
6
7
8
910111213
8D
GND
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.
T o ensure the high-impedance state during power up or power down, OE
should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54AHC573 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74AHC573 is characterized for operation from –40°C to 85°C.
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.
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.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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.
1
SN54AHC573, SN74AHC573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS242I – OCTOBER 1995 – REVISED JANUARY 2000
FUNCTION TABLE
INPUTS
OELED
LHHH
LHL L
LLX Q
HXXZ
(each latch)
OUTPUT
Q
0
logic symbol
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
†
OE
LE
1D
2D
3D
4D
5D
6D
7D
8D
1
11
2
3
4
5
6
7
8
9
EN
C1
1D
logic diagram (positive logic)
1
OE
11
LE
C1
1D
1D
2
19
18
17
16
15
14
13
12
19
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
1Q
To Seven Other Channels
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
UNIT
mA
mA
∆t/∆vInput transition rise or fall rate
ns/V
SN54AHC573, SN74AHC573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS242I – OCTOBER 1995 – REVISED JANUARY 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
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.
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Supply voltage25.525.5V
CC
VCC = 2 V1.51.5
High-level input voltage
IH
Low-level input voltage
IL
Input voltage05.505.5V
I
Output voltage0V
O
High-level output current
Low-level output current
p
Operating free-air temperature–55125–4085°C
A
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
VCC = 3 V
VCC = 5.5 V3.853.85
VCC = 2 V0.50.5
VCC = 3 V
VCC = 5.5 V1.651.65
VCC = 2 V–50–50
VCC = 3.3 V ± 0.3 V
VCC = 5 V ± 0.5 V–8–8
VCC = 2 V5050
VCC = 3.3 V ± 0.3 V
VCC = 5 V ± 0.5 V88
VCC = 3.3 V ± 0.3 V100100
VCC = 5 V ± 0.5 V2020
2.12.1
0.90.9
CC
–4–4
44
0V
CC
V
V
V
m
A
m
A
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
SN54AHC573, SN74AHC573
PARAMETER
TEST CONDITIONS
V
UNIT
OH
OL
UNIT
UNIT
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS242I – OCTOBER 1995 – REVISED JANUARY 2000
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
CC
2 V1.921.91.9
IOH = –50 mA
V
OH
IOH = –4 mA
IOH = –8 mA
IOL = 50 mA
V
OL
IOL = 4 mA
IOL = 8 mA
I
I
I
OZ
I
CC
C
i
C
o
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
VI = VCC or GND0 V to 5.5 V±0.1±1*±1
VI = VIL or VIH, VO = VCC or GND5.5 V±0.25±2.5±2.5
VI = VCC or GND,IO = 05.5 V44040
VI = VCC or GND5 V2.51010pF
VO = VCC or GND5 V3.5pF
3 V2.932.92.9
4.5 V4.44.54.44.4
3 V2.582.482.48
4.5 V3.943.83.8
2 V0.10.10.1
3 V0.10.10.1
4.5 V0.10.10.1
3 V0.360.50.44
4.5 V0.360.50.44
TA = 25°CSN54AHC573 SN74AHC573
MINTYPMAXMINMAXMINMAX
V
V
m
A
m
A
m
A
timing requirements over recommended operating free-air temperature range,
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
V
CC
TA = 25°CSN54AHC573 SN74AHC573
MINMAXMINMAXMINMAX
t
Pulse duration, LE high555ns
w
t
Setup time, data before LE↓
su
t
Hold time, data after LE↓1.51.51.5ns
h
3.53.53.5ns
timing requirements over recommended operating free-air temperature range,
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
V
CC
TA = 25°CSN54AHC573 SN74AHC573
MINMAXMINMAXMINMAX
t
Pulse duration, LE high555ns
w
t
Setup time, data before LE↓
su
t
Hold time, data after LE↓1.51.51.5ns
h
3.53.53.5ns
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER
UNIT
D
Q
C
15 pF
ns
LE
Q
C
15 pF
ns
OE
Q
C
pF
ns
OE
Q
C
15 pF
ns
D
Q
C
50 pF
ns
LE
Q
C
pF
ns
OE
Q
C
pF
ns
OE
Q
C
50 pF
ns
PARAMETER
UNIT
D
Q
C
pF
ns
LE
Q
C
pF
ns
OE
Q
C
15 pF
ns
OE
Q
C
pF
ns
D
Q
C
pF
ns
LE
Q
C
50 pF
ns
OE
Q
C
pF
ns
OE
Q
C
pF
ns
SN54AHC573, SN74AHC573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS242I – OCTOBER 1995 – REVISED JANUARY 2000
switching characteristics over recommended operating free-air temperature range,
V
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
CC
FROMTOLOAD
(INPUT)(OUTPUT)CAPACITANCE
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
sk(o)
∗
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.
CL = 50 pF1.5**1.5ns
=
L
=
L
= 15
L
=
L
=
L
= 50
L
= 50
L
=
L
p
p
p
p
p
p
p
p
TA = 25°CSN54AHC573 SN74AHC573
MINTYPMAXMINMAXMINMAX
7*11*1*13*113
7*11*1*13*113
7.6*11.9*1*14*114
7.6*11.9*1*14*114
7.3*11.5*1*13.5*113.5
7.3*11.5*1*13.5*113.5
8.3*11*1*13*113
8.3*11*1*13*113
9.514.5116.5116.5
9.514.5116.5116.5
10.115.4117.5117.5
10.115.4117.5117.5
9.815117117
9.815117117
10.714.5116.5116.5
10.714.5116.5116.5
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
FROMTOLOAD
(INPUT)(OUTPUT)CAPACITANCE
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
sk(o)
∗
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.
CL = 50 pF1**1ns
= 15
L
= 15
L
=
L
= 15
L
= 50
L
=
L
= 50
L
= 50
L
p
p
p
p
p
p
p
p
TA = 25°CSN54AHC573 SN74AHC573
MINTYPMAXMINMAXMINMAX
4.5*6.8*18*18
4.5*6.8*18*18
5*7.7*19*19
5*7.7*19*19
5.2*7.7*19*19
5.2*7.7*19*19
5.2*7.7*19*19
5.2*7.7*19*19
68.8110110
68.8110110
6.59.7111111
6.59.7111111
6.79.7111111
6.79.7111111
6.79.7111111
6.79.7111111
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
SN54AHC573, SN74AHC573
PARAMETER
UNIT
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS242I – OCTOBER 1995 – REVISED JANUARY 2000
noise characteristics, V
V
OL(P)
V
OL(V)
V
OH(V)
V
IH(D)
V
IL(D)
NOTE 4: Characteristics are for surface-mount packages only.
Quiet output, maximum dynamic V
Quiet output, minimum dynamic V
Quiet output, minimum dynamic V
High-level dynamic input voltage3.5V
Low-level dynamic input voltage1.5V
operating characteristics, V
C
Power dissipation capacitanceNo load,f = 1 MHz16pF
pd
= 5 V, CL = 50 pF, TA = 25°C (see Note 4)
CC
OL
OL
OH
= 5 V, TA = 25°C
CC
PARAMETERTEST CONDITIONSTYPUNIT
SN74AHC573
MINMAX
1V
–0.8V
4V
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
From Output
Under Test
(see Note A)
SN54AHC573, SN74AHC573
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS242I – OCTOBER 1995 – REVISED JANUARY 2000
PARAMETER MEASUREMENT INFORMATION
V
Test
Point
C
L
From Output
Under Test
(see Note A)
C
L
RL = 1 kΩ
S1
CC
Open
GND
TESTS1
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open Drain
Open
V
CC
GND
V
CC
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
Input
Input
t
PLH
In-Phase
Output
t
PHL
Out-of-Phase
Output
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
t
w
50% V
CC
VOLTAGE WAVEFORMS
PULSE DURATION
50% V
CC
50% V
50% V
VOLTAGE WAVEFORMS
50% V
CC
CC
3-STATE AND OPEN-DRAIN OUTPUTS
50% V
LOAD CIRCUIT FOR
V
CC
CC
0 V
V
CC
CC
t
PHL
50% V
t
PLH
50% V
CC
CC
0 V
V
V
V
V
OH
OL
OH
OL
Timing Input
Data Input
Output
Control
Output
Waveform 1
S1 at V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
50% V
CC
t
su
50% V
CC
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
50% V
CC
t
PZL
50% V
50% V
CC
CC
CC
t
PZH
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
t
h
50% V
50% V
VOL + 0.3 V
VOH – 0.3 V
CC
t
t
CC
PLZ
PHZ
V
CC
0 V
V
CC
0 V
V
CC
0 V
≈V
V
OL
V
OH
≈0 V
CC
NOTES: A. CL includes probe and jig capacitance.
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, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
7
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
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 APPLICA TIONS USING SEMICONDUCT OR 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
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.
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.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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