SN74AHCT595DB [TI]
8-BIT SHIFT REGISTERS WITH 3-STATE OUTPUT REGISTERS; 8位移位寄存器具有三态输出寄存器
| 型号： | SN74AHCT595DB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 8-BIT SHIFT REGISTERS WITH 3-STATE OUTPUT REGISTERS |
| 文件： | 总9页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – REVISED JANUARY 2000
SN54AHCT595 . . . J OR W PACKAGE
SN74AHCT595 . . . D, DB, N, OR PW PACKAGE
(TOP VIEW)
EPIC (Enhanced-Performance Implanted
CMOS) Process
Inputs Are TTL-Voltage Compatible
8-Bit Serial-In, Parallel-Out Shift
Shift Register Has Direct Clear
Q
Q
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
B
Q
C
D
A
Q
SER
OE
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Q
E
Q
12 RCLK
F
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
11
10
9
Q
SRCLK
SRCLR
G
Q
H
GND
Q
H′
– 1000-V Charged-Device Model (C101)
Package Options Include Plastic
SN54AHCT595 . . . FK PACKAGE
(TOP VIEW)
Small-Outline (D), Shrink Small-Outline
(DB), Thin Shrink Small-Outline (PW), and
Ceramic Flat (W) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) DIPs
3
2
1 20 19
18
SER
OE
Q
4
5
6
7
8
D
Q
17
16
E
description
NC
NC
The ’AHCT595 devices contain an 8-bit serial-in,
parallel-out shift register that feeds an 8-bit D-type
storage register. The storage register has parallel
3-state outputs. Separate clocks are provided for
the shift and storage registers. The shift register
has a direct overriding clear (SRCLR) input, serial
(SER) input, and serial outputs for cascading.
When the output-enable (OE) input is high, the
outputs are in the high-impedance state.
15 RCLK
14
9 10 11 12 13
Q
F
SRCLK
Q
G
NC – No internal connection
Both the shift register clock (RCLK) and storage register clock (SRCLK) are positive-edge triggered. If both
clocks are connected together, the shift register always is one clock pulse ahead of the storage register.
The SN54AHCT595 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHCT595 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.
Copyright 2000, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – REVISED JANUARY 2000
FUNCTION TABLE
INPUTS
FUNCTION
Outputs Q –Q are disabled.
SER SRCLK SRCLR RCLK
OE
H
X
X
X
X
X
X
X
X
L
X
X
X
A
H
L
Outputs Q –Q are enabled.
A H
X
Shift register is cleared.
First stage of the shift register goes low.
Other stages store the data of previous stage, respectively.
L
↑
↑
H
H
X
X
X
X
First stage of the shift register goes high.
Other stages store the data of previous stage, respectively.
H
X
X
X
↓
H
X
X
X
↑
X
X
X
Shift-register state is not changed.
X
X
Shift-register data is stored into the storage register.
Storage-register state is not changed.
↓
†
logic symbol
13
OE
EN3
C2
12
RCLK
SRG8
10
11
R
SRCLR
SRCLK
C1/
15
1
14
Q
Q
2D
3
SER
1D
A
B
2
Q
Q
C
D
3
4
5
6
7
9
Q
Q
E
F
Q
Q
G
H
2D
3
Q
H′
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, DB, J, N, PW, and W packages.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – REVISED JANUARY 2000
logic diagram (positive logic)
13
OE
12
RCLK
10
SRCLR
11
SRCLK
14
SER
Q
Q
1D
C1
R
3D
C3
15
Q
Q
Q
Q
A
B
2D
C2
3D
C3
1
2
3
R
2D
C2
R
3D
C3
Q
Q
Q
Q
Q
Q
C
D
2D
C2
3D
C3
R
2D
C2
R
3D
C3
Q
Q
Q
4
5
6
Q
Q
Q
Q
Q
Q
E
F
2D
C2
R
3D
C3
2D
C2
3D
C3
G
R
2D
C2
R
3D
C3
Q
7
9
Q
Q
Q
H
H′
Pin numbers shown are for the D, DB, J, N, PW, and W packages.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – REVISED JANUARY 2000
timing diagram
SRCLK
SER
RCLK
SRCLR
OE
Q
Q
A
B
Q
Q
C
D
Q
E
Q
F
Q
G
Q
H
Q
H’
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – REVISED JANUARY 2000
†
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): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
JA
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°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.
recommended operating conditions (see Note 3)
SN54AHCT595 SN74AHCT595
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
V
V
O
CC
–8
CC
–8
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.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – REVISED JANUARY 2000
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
TYP
SN54AHCT595 SN74AHCT595
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
3
pF
pF
i
I
CC
= V
V
or GND
5.5
o
O
CC
* 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
CC
= 0 V.
CC
†
.
timing requirements over recommended operating free-air temperature range, V
(unless otherwise noted) (see Figure 1)
= 5 V ± 0.5 V
CC
T
= 25°C
SN54AHCT595 SN74AHCT595
A
UNIT
MIN
5
MAX
MIN
5.5
5.5
5
MAX
MIN
5.5
5.5
5
MAX
SRCLK high or low
RCLK high or low
SRCLR low
t
w
Pulse duration
5
ns
5
SER before SRCLK↑
SRCLK↑ before RCLK↑
3
3
3
‡
5
5
5
t
t
ns
ns
Setup time
Hold time
su
SRCLR low before RCLK↑
SRCLR high (inactive) before SRCLK↑
SER after SRCLK↑
5
5
5
3.4
2
3.8
2
3.8
2
h
‡
This setup time allows the storage register to receive stable data from the shift register. The clocks can be tied together, in which case the shift
register is one clock pulse ahead of the storage register.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – 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 = 25°C
A
SN54AHCT595 SN74AHCT595
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
PARAMETER
UNIT
MHz
ns
MIN
135*
95
TYP
170*
140
4.3*
4.3*
4.5*
4.5*
4.5*
4.3*
5.4*
5.6
MAX
MIN
115*
85
1*
1*
1*
1*
1*
1*
1*
1
MAX
MIN
115
85
1
MAX
C
C
= 15 pF
= 50 pF
L
L
f
max
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
7.4*
7.4*
8.2*
8.2*
8*
8.5*
8.5*
9.4*
9.4*
9.1*
10*
10*
10.5
10.5
11.4
11.4
11.1
12
8.5
8.5
9.4
9.4
9.1
10
PLH
PHL
PLH
PHL
PHL
PZH
PZL
PLH
PHL
PLH
PHL
PHL
PZH
PZL
PHZ
PLZ
C
= 15 pF
RCLK
Q –Q
A
L
H
1
1
C
C
C
= 15 pF
= 15 pF
= 15 pF
ns
ns
ns
SRCLK
SRCLR
OE
Q
Q
L
L
L
H′
H′
1
1
8.6*
8.6*
9.4
1
Q –Q
A
H
1
10
1
10.5
10.5
11.4
11.4
11.1
12
C
= 50 pF
ns
RCLK
Q –Q
A
L
H
5.6
9.4
1
1
6.4
10.2
10.2
10
1
1
C
C
C
= 50 pF
= 50 pF
= 50 pF
ns
ns
ns
SRCLK
SRCLR
OE
Q
L
L
L
H′
6.4
1
1
6.4
1
1
Q
H′
5.7
10.6
10.6
10.3
10.3
1
1
Q –Q
A
H
6.8
1
12
1
12
3.5
1
11
1
11
C
= 50 pF
ns
OE
Q –Q
A
L
H
3.4
1
11
1
11
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
noise characteristics, V
= 5 V, C = 50 pF, T = 25°C (see Note 4)
CC
L
A
SN74AHCT595
PARAMETER
UNIT
MIN
TYP
1
MAX
V
V
V
V
V
Quiet output, maximum dynamic V
V
V
V
V
V
OL(P)
OL(V)
OH(V)
IH(D)
IL(D)
OL
Quiet output, minimum dynamic V
Quiet output, minimum dynamic V
High-level dynamic input voltage
Low-level dynamic input voltage
–0.6
3.8
OL
OH
2
0.8
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
No load, f = 1 MHz
TYP
UNIT
C
Power dissipation capacitance
112
pF
pd
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54AHCT595, SN74AHCT595
8-BIT SHIFT REGISTERS
WITH 3-STATE OUTPUT REGISTERS
SCLS374F – MAY 1997 – 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
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas 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 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
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD 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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