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參數(shù)資料
| 型號： | 74F646A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal transceiver/register, inverting(3-State)(八收發(fā)器/寄存器，（反相，三態(tài)）) |
| 中文描述： | 八路收發(fā)器/寄存器，反相（3態(tài)）（八收發(fā)器/寄存器，（反相，三態(tài)）） |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 121K |
| 代理商： | 74F646A |
Philips Semiconductors
Product specification
74F646/A/74F648/A
Transceivers/registers
1990 Sep 25
5
FUNCTION TABLE
INPUTS
CPAB
DATA I/O
OPERATING MODE
OE
DIR
CPBA
SAB
SBA
An
Bn
74F646/74F646A
74F648/74F648A
X
X
↑
X
X
X
Input
Unspecified*
Store A, B unspecified*
Store A, B unspecified*
X
X
X
↑
↑
X
X
Unspecified*
Input
Store B, A unspecified*
Store B, A unspecified*
H
X
↑
X
X
Input
Input
Store A and B data
Store A and B data
H
X
H or L
H or L
X
X
Input
Input
Isolation, hold storage
Isolation, hold storage
L
L
X
X
X
L
Output
Input
Real time B data to A bus
Real time B data to A bus
L
L
X
H or L
X
H
Output
Input
Stored B data to A bus
Stored B data to A bus
L
H
X
X
L
X
Input
Output
Real time A data to B bus
Real time A data to B bus
L
H
H or L
X
H
X
Input
Output
Stored A data to B bus
Stored A data to B bus
NOTES:
1. H =
2. L
3. X =
4.
↑
=
5. *
High–voltage level
Low–voltage level
Don’t care
Low–to–high clock transition
The data output function may be enabled or disabled by various signals at the OE and DIR inputs. Data input functions are
always enabled, i.e., data at the bus pins will be stored on every low–to–high transition of the clock.
=
=
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the
operating free air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
V
CC
V
IN
I
IN
V
OUT
Supply voltage
–0.5 to +7.0
V
Input voltage
–0.5 to +7.0
V
Input current
–30 to +5
mA
Voltage applied to output in high output state
–0.5 to V
CC
V
I
OUT
Current applied to output in low output state
74F646A, 74F648A
72
mA
74F646, 74F648
128
mA
T
amb
Operating free air temperature range
0 to +70
°
C
°
C
T
stg
Storage temperature range
–65 to +150
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
NOM
MAX
V
CC
V
IH
V
IL
I
Ik
I
OH
I
OL
Supply voltage
4.5
5.0
5.5
V
High–level input voltage
2.0
V
Low–level input voltage
0.8
V
Input clamp current
–18
mA
High–level output current
–15
mA
Low–level output current
74F646A, 74F648A
48
mA
74F646, 74F648
64
mA
°
C
T
amb
Operating free air temperature range
0
+70
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F648 | Octal transceiver/register, inverting(3-State)(八通道收發(fā)器/寄存器，反向（三態(tài)）) |
| 74F648A | Octal transceiver/register, non-inverting(3-State)(八通道收發(fā)器/寄存器，同向（三態(tài)）) |
| 74F649 | Octal transceiver/register, non-inverting open-collector |
| 74F647 | Octal transceiver/register, non-inverting open-collector |
| 74F64 | 4-2-3-2-input AND-OR-invert gate |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F646B | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Transceiver/Register with 3-STATE Outputs |
| 74F646BFCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BFCX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BFMQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BFMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
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