參數(shù)資料
型號: 74LVCH16244A
廠商: NXP Semiconductors N.V.
英文描述: 16-bit buffer/line driver;5V input/output tolerant (3-State)(5V輸入/輸出容限的16位緩沖器/線驅動器(三態(tài)))
中文描述: 16位緩沖器/線路驅動器,5V的輸入/輸出寬容(3態(tài))(5V的輸入/輸出容限的16位緩沖器/線驅動器(三態(tài)))
文件頁數(shù): 6/10頁
文件大小: 78K
代理商: 74LVCH16244A
Philips Semiconductors
16-bit buffer/line driver; 5V input/output tolerant
(3-State)
Product specification
74LVC16244A/
74LVCH16244A
1997 Oct 28
6
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF; R
L
= 500
; T
amb
= –40
°
C to +85
°
C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V
±
0.3V
MIN
TYP
1
V
CC
= 2.7V
MIN
V
CC
= 1.2V
TYP
UNIT
MAX
MAX
t
PHL
t
PLH
Propagation delay
1An to 1Yn;
2An to 2Yn
1
1.5
3
4.5
1.5
5.5
11.0
ns
t
PZH
t
PZL
3-State output enable time
1OE to 1Yn;
2OE to 2Yn
2, 3
1.5
3.5
5.5
1.5
6.5
15.0
ns
t
PHZ
t
PLZ
3-State output disable time
1OE to 1Yn;
2OE to 2Yn
2, 3
1.5
3.7
5.2
1.5
6.2
10.0
ns
NOTE:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25
°
C.
AC WAVEFORMS
V
M
= 1.5V at V
V
OL
and V
OH
are the typical output voltage drop that occur with the output load.
V
X
= V
OL
+ 0.3V at V
CC
2.7V; V
X
= V
OL
+ 0.1 V
CC
at V
CC
V
Y
= V
OH
–0.3V at V
CC
2.7V; V
Y
= V
OH
– 0.1 V
CC
at V
CC
2.7V; V
= 0.5 V
at V
2.7V.
2.7V
2.7V
SW00057
An INPUT
V
M
t
PHL
t
PLH
V
OL
V
I
V
M
GND
V
OH
Yn OUTPUT
Waveform 1. Input (An) to output (Yn) propagation delay times
t
PLZ
t
PZL
V
I
nOE INPUT
GND
V
CC
OUTPUT
LOW-to-OFF
OFF-to-LOW
V
OL
V
OH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
outputs
enabled
outputs
enabled
outputs
disabled
t
PHZ
V
M
V
M
V
M
t
PZH
V
X
V
Y
SW00058
Waveform 2. 3-State enable and disable times
TEST CIRCUIT
PULSE
GENERATOR
R
T
V
IN
D.U.T.
V
OUT
C
L
V
CC
R
L
=500
SWITCH POSITION
TEST
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
SWITCH
Open
2
V
CC
GND
Test Circuit for 3-State Outputs
Open
GND
S
1
2
V
CC
DEFINITIONS
R
L
= Load resistor
C
L
= Load capacitance includes jig and probe capacitance
R
T
=Termination resistance should be equal to Z
OUT
of pulse generators.
V
CC
2.7V
2.7 – 3.6V
V
IN
V
CC
2.7V
SW00047
R
L
=500
Waveform 3. Load circuitry for switching times
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