54ACT16470 [TI]
16-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS; 16位寄存收发器，三态输出
| 型号： | 54ACT16470 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 16-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 文件： | 总9页 (文件大小：152K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
54ACT16470 . . . WD PACKAGE
74ACT16470 . . . DL PACKAGE
(TOP VIEW)
Members of the Texas Instruments
Widebus Family
Inputs Are TTL-Voltage Compatible
Flow-Through Architecture Optimizes
PCB Layout
1
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1OEAB
1CLKAB
1CEAB
GND
1OEBA
1CLKBA
1CEBA
GND
1B1
1B2
2
Distributed V
Minimizes High-Speed Switching Noise
and GND Pin Configuration
3
CC
4
5
1A1
1A2
EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
6
7
V
V
CC
CC
500-mA Typical Latch-Up Immunity at
125°C
8
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
9
Package Options Include Shrink
Small-Outline 300-mil (DL) Packages Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Packages Using 25-mil Center-to-Center
Pin Spacings
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
description
The ’ACT16470 are 16-bit registered transceivers
that contain two sets of D-type flip-flops for
temporary storage of data flowing in either
direction. They can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate
clock (CLKAB or CLKBA) and output-enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow.
V
V
CC
CC
2A7
2A8
GND
2B7
2B8
GND
2CEBA
2CLKBA
2OEBA
2CEAB
2CLKAB
2OEAB
The A-to-B enable (CEAB) input must be low to
enter data from A or to output data to B. If both
CEAB and CLKAB are low, then B port will have
the level of A port prior to the most recent
low-to-high transition of CLKAB. Data flow from B
to A is similar, but requires the use of CEBA,
CLKBA, and OEBA inputs.
To avoid false clocking of the flip-flops, CE should not be switched from high to low while CLK is high.
The 74ACT16470 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and
functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16470 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74ACT16470 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 and Widebus are trademarks of Texas Instruments Incorporated.
Copyright 1996, 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
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
†
FUNCTION TABLE
INPUTS
OUTPUT
B
CEAB
CLKAB
OEAB
A
X
X
X
L
H
X
L
L
L
X
X
L
↑
X
H
L
Z
Z
‡
B
0
L
L
↑
L
H
H
†
‡
A-to-B data flow is shown: B-to-A flow is similar but
uses CEBA, CLKBA, and OEBA.
Output level before the indicated steady-state input
conditions were established
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
†
logic symbol
56
54
55
1
1OEBA
1CEBA
1EN3
G1
1CLKBA
1OEAB
1CEAB
1C5
2EN4
G2
3
2
1CLKAB
2C6
29
31
30
28
26
27
7EN9
G7
2OEBA
2CEBA
2CLKBA
7C11
8EN10
G8
2OEAB
2CEAB
2CLKAB
8C12
5
52
1A1
5D
4
1B1
3
1
1
6D
6
51
1A2
1A3
1A4
1A5
1A6
1A7
1A8
2A1
1B2
49
8
1B3
48
9
1B4
47
10
12
13
14
15
1B5
45
1B6
44
1B7
43
1B8
42
11D
10
2B1
9
1
1
12D
16
17
19
20
21
23
24
41
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2B2
40
2B3
38
2B4
37
2B5
36
2B6
34
2B7
33
2B8
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
logic diagram (positive logic)
56
1OEBA
54
1CEBA
55
1CLKBA
1
1OEAB
3
1CEAB
2
1CLKAB
C1
1D
5
52
1A1
1B1
C1
1D
To Seven Other Channels
29
2OEBA
31
2CEBA
30
2CLKBA
28
2OEAB
26
2CEAB
27
2CLKAB
C1
1D
15
42
2A1
2B1
C1
1D
To Seven Other Channels
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V
Maximum power package dissipation at T = 55°C (in still air)(see Note 2): DL package . . . . . . . . . . . 1.4 W
Storage temperature range, T
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±400 mA
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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 maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils.
recommended operating conditions (see Note 3)
54ACT16470
MIN NOM
74ACT16470
MIN NOM
UNIT
MAX
MAX
V
V
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input voltage
0.8
0.8
V
0
0
V
V
0
0
V
V
V
I
CC
CC
Output voltage
V
O
CC
CC
I
I
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
–24
24
–24
24
mA
mA
ns/V
°C
OH
OL
∆t/∆v
0
10
0
10
T
–55
125
–40
85
A
NOTE 3: Unused pins (input or I/O) must be held high or low to prevent them from floating.
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
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
54ACT16470
74ACT16470
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
4.4
TYP
MAX
MIN
4.4
MAX
MIN
4.4
MAX
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
I
= –50 µA
OH
5.4
5.4
5.4
V
3.94
4.94
3.8
3.8
V
OH
I
I
I
= –24 mA
= –75 mA
= 50 µA
OH
OH
OL
4.8
4.8
†
3.85
3.85
0.1
0.1
0.1
0.1
0.1
0.1
V
0.36
0.36
0.44
0.44
1.65
±1
0.44
0.44
1.65
±1
V
OL
I
I
= 24 mA
OL
†
= 75 mA
OL
I
I
I
Control inputs V = V
or GND
±0.1
±0.5
8
µA
µA
µA
I
I
CC
‡
A or B ports
V
= V
or GND
±5
±5
OZ
CC
O
CC
V = V
or GND,
I
O
= 0
80
80
I
CC
One input at 3.4 V,
Other inputs at V
§
5.5 V
0.9
1
1
mA
∆I
CC
or GND
CC
or GND
C
C
Control inputs V = V
5 V
5 V
3
pF
pF
i
I
CC
= V or GND
CC
A or B ports
V
11.5
io
O
†
‡
§
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
For I/O ports, the parameter I includes the input leakage current.
OZ
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or V
.
CC
timing requirements over recommended operating free-air temperature range,
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
V
CC
T
= 25°C
54ACT16470
74ACT16470
A
UNIT
MHz
ns
MIN
0
MAX
MIN
0
MAX
MIN
0
MAX
f
t
Clock frequency
Pulse duration
55
55
55
clock
CLK high
CLK low
4
4
4
w
8.5
6
8.5
6
8.5
6
t
t
Setup time, data before CLK↑
Hold time, data after CLK↑
ns
ns
su
1
1
1
h
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
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
switching characteristics over recommended operating free-air temperature range,
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
V
CC
T = 25°C
A
54ACT16470
74ACT16470
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MHz
ns
MIN
55
TYP
MAX
MIN
55
MAX
MIN
55
MAX
f
t
t
t
t
t
t
t
t
t
t
max
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
3.9
3.8
3.2
3.6
4.6
4.6
3.5
4.2
5.2
5.2
8.3
8.4
8.3
9.5
7.4
7
10.3
10.3
10.5
11.8
9.3
3.9
3.8
3.2
3.6
4.6
4.6
3.5
4.2
5.2
5.2
11.8
11.7
11.9
13.4
9.9
3.9
3.8
3.2
3.6
4.6
4.6
3.5
4.2
5.2
5.2
11.8
11.7
11.9
13.4
9.9
CLK
A or B
A or B
A or B
A or B
A or B
ns
ns
ns
ns
OE
OE
CE
CE
8.8
9.5
9.5
8.8
10.1
8.3
7.9
10.9
12.4
10.3
10
12.5
14.3
11.2
10.9
12.5
14.3
11.2
10.9
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
L
TYP
UNIT
Outputs enabled
Outputs disabled
59
C
Power dissipation capacitance per transceiver
C
pF
pd
39
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
54ACT16470, 74ACT16470
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS237A – JUNE 1990 – REVISED APRIL 1996
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
Open
GND
TEST
S1
S1
t
/t
Open
PLH PHL
/t
500 Ω
From Output
Under Test
t
2 × V
CC
GND
PLZ PZL
t
/t
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
LOAD CIRCUIT
3 V
0 V
Timing Input
Data Input
1.5 V
t
w
t
h
t
3 V
su
3 V
0 V
Input
1.5 V
1.5 V
1.5 V
1.5 V
0 V
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
Output
Control
(low-level
enabling)
3 V
0 V
3 V
0 V
Input
1.5 V
1.5 V
1.5 V
1.5 V
t
PZL
t
t
PHL
PLH
t
PLZ
Output
Waveform 1
V
OH
V
CC
In-Phase
Output
50% V
50% V
CC
50% V
50% V
CC
V
CC
20% V
S1 at 2 × V
(see Note B)
CC
CC
CC
V
V
OL
OL
t
PHZ
t
PLH
t
t
PHL
PZH
Output
Waveform 2
S1 at GND
V
OH
OH
0 V
Out-of-Phase
Output
80% V
50% V
50% V
CC
CC
CC
V
OL
(see Note B)
VOLTAGE WAVEFORMS
includes probe and jig capacitance.
VOLTAGE WAVEFORMS
NOTES: A.
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 1998, Texas Instruments Incorporated
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