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參數(shù)資料
| 型號： | SN54ABT16648 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 16-Bit Bus Transceivers and Registers With 3-State Outputs(16位總線收發(fā)器和寄存器(三態(tài)輸出)) |
| 中文描述： | 16位總線收發(fā)器和寄存器具有三態(tài)輸出（16位總線收發(fā)器和寄存器（三態(tài)輸出）） |
| 文件頁數(shù)： | 5/7頁 |
| 文件大小： | 157K |
| 代理商： | SN54ABT16648 |
SN54ABT16648, SN74ABT16648
16-BIT TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS213 – SEPTEMBER 1992 – REVISED OCTOBER 1992
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
3–5
FUNCTION TABLE
(each 8-bit section)
INPUTS
DATA I/O
OPERATION OR FUNCTION
OE
X
DIR
CLKAB
CLKBA
SAB
SBA
A1 THRU A8
B1 THRU B8
Unspecified
X
↑
X
↑
L
X
↑
↑
L
X
X
Input
Store A, B unspecified
Store B, A unspecified
X
X
X
X
Unspecified
Input
H
X
X
X
Input
Input
Store A and B data
H
X
X
X
Input disabled
Input disabled
Isolation, hold storage
L
L
X
X
X
L
Output
Input
Real-time B data to A bus
L
L
X
L
X
H
Output
Input
Stored B data to A bus
L
H
X
X
L
X
Input
Output
Real-time A data to B bus
L
H
L
X
H
X
Input
Output
Stored A data to B bus
The data output functions may be enabled or disabled by a variety of level combinations at the OE and DIR inputs. Data input functions are always
enabled; i.e., data at the bus pins is stored on every low-to-high transition on the clock inputs.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
Input voltage range, V
I
(except I/O ports) (see Note 1)
Voltage range applied to any output in the high state or power-off state, V
O
Current into any output in the low state, I
O
: SN54ABT16648
–0.5 V to 7 V
–0.5 V to 7 V
–0.5 V to 5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
96 mA
128 mA
–18 mA
–50 mA
1 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ABT16648
Input clamp current, I
IK
(V
I
< 0)
Output clamp current, I
OK
(V
O
< 0)
Maximum power dissipation at T
A
= 55
°
C (in still air)
Storage temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65
°
C to 150
°
C
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.
NOTE 1: The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
recommended operating conditions (see Note 2)
SN54ABT16648
SN74ABT16648
UNIT
MIN
MAX
MIN
MAX
VCC
VIH
VIL
VI
IOH
IOL
t/
v
TA
NOTE 2: Unused or floating pins (input or I/O) must be held high or low.
Supply voltage
4.5
5.5
4.5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
0
VCC
–24
0
VCC
–32
V
High-level output current
mA
Low-level output current
48
64
mA
Input transition rise or fall rate
Outputs enabled
10
10
ns/V
°
C
Operating free-air temperature
–55
125
–40
85
P
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