SN54ABTH32318HT [TI]
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS; 18位TRI -PORT通用总线交换器
| 型号： | SN54ABTH32318HT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS |
| 文件： | 总9页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
Members of the Texas Instruments
Widebus+ Family
High-Impedance State During Power Up
and Power Down
State-of-the-Art EPIC-ΙΙB BiCMOS Design
Significantly Reduces Power Dissipation
Distributed V
Minimizes High-Speed Switching Noise
and GND Pin Configuration
CC
UBE (Universal Bus Exchanger)
Combines D-Type Latches and D-Type
Flip-Flops for Operation in Transparent,
Latched, or Clocked Mode
High-Drive Outputs (–32-mA I , 64-mA I
)
OL
OH
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
Package Options Include 80-Pin Plastic
Thin Quad Flat (PN) Package With
Typical V
< 0.8 V at V
(Output Ground Bounce)
12 × 12-mm Body Using 0.5-mm Lead Pitch
and 84-Pin Ceramic Quad Flat (HT) Package
OLP
= 5 V, T = 25°C
CC
A
SN74ABTH32318 . . . PN PACKAGE
(TOP VIEW)
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
A2
A3
A4
GND
A5
A6
A7
A8
A9
C8
C7
C6
GND
C5
C4
C3
C2
C1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
1
2
3
4
5
6
7
8
9
V
V
10
11
12
13
14
15
16
17
18
19
20
CC
CC
GND
A10
A11
A12
A13
A14
GND
A15
A16
A17
GND
B18
B17
B16
B15
B14
GND
B13
B12
B11
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
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.
Widebus+, EPIC-ΙΙB, and UBE are trademarks of Texas Instruments Incorporated.
Copyright 1997, 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
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
SN54ABTH32318 . . . HT PACKAGE
(TOP VIEW)
84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64
1
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
A2
A3
A4
GND
A5
A6
A7
A8
A9
C8
C7
C6
GND
C5
C4
C3
C2
C1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
V
V
CC
CC
NC
GND
A10
A11
A12
A13
A14
GND
A15
A16
A17
NC
GND
B18
B17
B16
B15
B14
GND
B13
B12
B11
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
NC – No internal connection
description
The ’ABTH32318 consist of three 18-bit registered input/output (I/O) ports. These registers combine D-type
latches and flip-flops to allow data flow in transparent, latch, and clock modes. Data from one input port can be
exchanged to one or more of the other ports. Because of the universal storage element, multiple combinations
of real-time and stored data can be exchanged among the three ports.
Data flow in each direction is controlled by the output-enable (OEA, OEB, and OEC), select-control (SELA,
SELB, and SELC), latch-enable (LEA, LEB, and LEC), and clock (CLKA, CLKB, and CLKC) inputs. The A data
register operates in the transparent mode when LEA is high. When LEA is low, data is latched if CLKA is held
at a high or low logic level. If LEA is low, data is stored on the low-to-high transition of CLKA. Output data
selection is accomplished by the select-control pins. All three ports have active-low output enables, so when
the output-enable input is low, the outputs are active; when the output-enable input is high, the outputs are in
the high-impedance state.
When V
is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.
CC
However, to ensure the high-impedance state above 2.1 V, OE should be tied to V
the minimum value of the resistor is determined by the current-sinking capability of the driver.
through a pullup resistor;
CC
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
description (continued)
The SN54ABTH32318 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABTH32318 is characterized for operation from –40°C to 85°C.
Function Tables
†
STORAGE
INPUTS
OUTPUT
CLKA
LEA
L
A
L
↑
↑
L
L
H
X
X
L
H
‡
‡
H
L
X
X
L
Q
Q
0
0
L
H
L
H
H
H
†
‡
A-portregistershown. BandCportsare
similar but use CLKB, CLKC, LEB, and
LEC.
Output level before the indicated
steady-state input conditions were
established
A-PORT OUTPUT
INPUTS
OUTPUT A
OEA SELA
H
L
L
X
H
L
Z
Output of C register
Output of B register
B-PORT OUTPUT
INPUTS
OEB SELB
OUTPUT B
H
L
L
X
H
L
Z
Output of A register
Output of C register
C-PORT OUTPUT
INPUTS
OEC SELC
OUTPUT C
H
L
L
X
H
L
Z
Output of B register
Output of A register
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
logic diagram (positive logic)
77
OEC
76
SELC
Q
CLK
74
CLKC
LEC
75
52
LE
D
C1
24
25
OEB
SELB
Q
27
26
CLKB
LEB
CLK
LE
D
28
B1
78
79
OEA
SELA
Q
CLK
22
23
CLKA
LEA
LE
D
80
A1
1 of 18 Channels
Pin numbers shown are for the PN package.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
†
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 (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
I
Voltage range applied to any output in the high or power-off state, V
. . . . . . . . . . . . . . . . . . . –0.5 V to 5.5 V
O
Current into any output in the low state, I : SN54ABTH32318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
O
SN74ABTH32318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 mA
IK
OK
I
Output clamp current, I
(V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
O
Package thermal impedance, θ (see Note 2): PN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62°C/W
Storage temperature range, T
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51.
recommended operating conditions (see Note 3)
SN54ABTH32318 SN74ABTH32318
UNIT
MIN
4.5
2
MAX
MIN
4.5
2
MAX
V
V
V
V
Supply voltage
5.5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
Input voltage
IH
0.8
0.8
V
IL
0
V
0
V
CC
V
I
CC
I
I
High-level output current
Low-level output current
Input transition rise or fall rate
Power-up ramp rate
–24
48
–32
64
mA
mA
ns/V
µs/V
°C
OH
OL
∆t/∆v
∆t/∆V
Outputs enabled
10
10
200
–55
200
–40
CC
T
Operating free-air temperature
125
85
A
NOTE 3: Unused control pins 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
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ABTH32318
SN74ABTH32318
PARAMETER
TEST CONDITIONS
UNIT
†
†
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
V
= 4.5 V,
= 4.5 V,
= 5 V,
I = –18 mA
–1.2
–1.2
V
IK
CC
CC
CC
I
I
I
I
I
I
I
= –3 mA
= –3 mA
= –24 mA
= –32 mA
= 48 mA
= 64 mA
2.5
3
2.5
3
OH
OH
OH
OH
OL
OL
V
OH
2
V
= 4.5 V
= 4.5 V
CC
CC
2
0.55
0.55
0.55
0.55
V
V
V
V
OL
100
100
mV
µA
hys
Control inputs
V
V
= 0 to 5.5 V,
V = V
or GND
or GND
±1
±1
CC
I
CC
CC
I
I
A, B, or C ports
= 2.1 V to 5.5 V,
V = V
I
±20
±20
CC
V = 0.8 V
100
100
I
I
A, B, or C ports
V
CC
= 4.5 V
µA
I(hold)
V = 2 V
I
–100
–100
‡
I
I
I
I
I
V
V
V
V
V
= 0 to 2.1 V, V = 0.5 V to 2.7 V, OE = X
±50
±50
±100
50
±50
±50
±100
50
µA
µA
µA
µA
mA
OZPU
OZPD
off
CC
CC
CC
CC
CC
O
‡
= 2.1 V to 0, V = 0.5 V to 2.7 V, OE = X
O
= 0,
V or V ≤ 4.5 V
I O
= 5.5 V, V = 5.5 V
O
Outputs high
= 2.5 V
CEX
§
= 5.5 V,
V
–50
–100
–180
2
–50
–100
–180
2
O
O
Outputs high
Outputs low
V
I
= 5.5 V,
= 0,
CC
O
I
45
45
mA
CC
V = V
or GND
I
CC
Outputs disabled
1
1
V
= 5.5 V, One input at 3.4 V,
CC
Other inputs at V
¶
0.5
0.5
mA
∆I
CC
or GND
CC
V = 2.5 V or 0.5 V
C
C
Control inputs
3
3
pF
pF
i
I
A, B, or C ports
V
O
= 2.5 V or 0.5 V
11.5
11.5
io
†
‡
§
¶
All typical values are at V
= 5 V, T = 25°C.
A
CC
This parameter is specified by characterization.
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V or GND.
CC
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
SN54ABTH32318 SN74ABTH32318
UNIT
MIN
MAX
MIN
MAX
f
t
Clock frequency
Pulse duration
150
150
MHz
ns
clock
LE high
3.3
3.3
2.4
2.1
1.4
2.1
3.3
3.3
2.4
2.1
1.4
2.1
w
CLK high or low
A, B, or C before CLK↑
A, B, or C before LE↓
A, B, or C after CLK↑
A, B, or C after LE↓
t
t
Setup time
Hold time
ns
ns
su
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
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, C = 50 pF (unless otherwise noted) (see Figure 1)
L
SN54ABTH32318 SN74ABTH32318
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MHz
ns
MIN
150
1.4
1.1
1.4
1.8
2.6
2.6
2.5
2.5
1.4
2.4
1
MAX
MIN
150
1.4
1.1
1.4
1.8
2.6
2.6
2.5
2.5
1.4
2.4
1
MAX
f
t
t
t
t
t
t
t
t
t
t
t
t
max
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
6.5
6.8
6.7
6.8
8
6.1
6.6
6.5
6.5
7.5
6.9
7.4
6.7
6.8
7.1
6.2
6
A, B, or C
SEL
C, B, or A
A, B, or C
A, B, or C
A, B, or C
A, B, or C
A, B, or C
ns
ns
ns
ns
ns
LE
7.4
8
CLK
7.2
6.9
7.2
6.4
6.4
OE
OE
2
2
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
SN54ABTH32318, SN74ABTH32318
18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS
SCBS180E – JUNE 1992 – REVISED MAY 1997
PARAMETER MEASUREMENT INFORMATION
7 V
Open
TEST
/t
S1
S1
500 Ω
From Output
Under Test
t
Open
7 V
PLH PHL
GND
t
/t
PLZ PZL
C
= 50 pF
t
/t
Open
L
PHZ PZH
500 Ω
(see Note A)
3 V
0 V
LOAD CIRCUIT
Timing Input
Data Input
1.5 V
t
w
t
t
h
su
3 V
0 V
3 V
0 V
Input
1.5 V
1.5 V
1.5 V
1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3 V
0 V
3 V
0 V
Output
Control
1.5 V
1.5 V
1.5 V
1.5 V
Input
t
PZL
t
t
t
PHL
PLH
t
PLZ
Output
Waveform 1
S1 at 7 V
3.5 V
V
V
OH
1.5 V
1.5 V
1.5 V
1.5 V
Output
V
V
+ 0.3 V
OL
V
OL
OL
(see Note B)
t
PHZ
t
PHL
PLH
t
PZH
Output
Waveform 2
S1 at Open
(see Note B)
V
OH
V
V
OH
– 0.3 V
OH
1.5 V
1.5 V
Output
≈ 0 V
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 ≤ 10 MHz, Z = 50 Ω, t ≤ 2.5 ns, t ≤ 2.5 ns.
O
r
f
D. The outputs are measured one at a time with one 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 1999, Texas Instruments Incorporated
相关型号：
©2020 ICPDF网 联系我们和版权申明