參數(shù)資料
型號： 74LVC244
廠商： NXP Semiconductors N.V.
英文描述： Octal buffer/line driver with 5-volt tolerant inputs/outputs 3-Statetitle
中文描述： 八路緩沖器/線路驅(qū)動器5伏耐輸入/輸出3 - Statetitle
文件頁數(shù)： 5/10頁
文件大?。?/td> 96K
代理商： 74LVC244
Philips Semiconductors
Product specification
74LVC244A
74LVCH244A
Octal buffer/line driver with 5-volt
tolerant inputs/outputs (3-State)
1998 May 20
5
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40
°
C to +85
°
C
UNIT
MIN
TYP
1
MAX
V
IH
HIGH level Input voltage
V
CC
= 1.2V
V
CC
V
V
CC
= 2.7 to 3.6V
2.0
V
IL
LOW level Input voltage
V
CC
= 1.2V
GND
V
V
CC
= 2.7 to 3.6V
0.8
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
CC
0.5
V
OH
HIGH level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –100
μ
A
V
CC
0.2
V
CC
V
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –18mA
V
CC
0.6
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –24mA
V
CC
0.8
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
0.40
V
OL
LOW level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 100
μ
A
GND
0.20
V
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
0.55
I
I
Input leakage current
V
CC
= 3 6V; V = 5 5V or GND
I
= 5.5V or GND
0 1
0.1
5
μ
A
I
OZ
3-State output OFF-state current
V
CC
= 3.6V; V
I
= V
IH
or V
IL
; V
O
= 5.5V or GND
0.1
5
μ
A
I
off
Power off leakage supply
V
CC
= 0.0V; V
I
or V
O
= 5.5V
0.1
10
μ
A
I
CC
Quiescent supply current
V
CC
= 3.6V; V
I
= V
CC
or GND; I
O
= 0
0.1
10
μ
A
I
CC
Additional quiescent supply current
per input pin
V
CC
= 2.7V to 3.6V; V
I
= V
CC
–0.6V; I
O
= 0
5
500
μ
A
I
BHL
Bushold LOW sustaining
current
2, 3, 4
V
CC
= 3.0V; V
I
=0.8V
75
–
–
μ
A
I
BHH
Bushold HIGH sustaining
current
2, 3, 4
V
CC
= 3.0V; V
I
=2.0V
–75
–
–
μ
A
I
BHLO
Bushold LOW overdrive current2
, 3, 5
V
CC
= 3.6V
500
–
–
μ
A
I
BHHO
Bushold HIGH overdrive current2
, 3, 5
V
CC
= 3.6V
–500
–
–
μ
A
NOTES:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25
°
C.
2. Valid for data inputs of bushold parts (LVCH-A) only.
3. For data inputs only, control inputs do not have a bushold circuit
4. The specified sustaining current at the data inputs do not have a bushold circuit.
5. The specified overdrive current at the data input forces the data input to the opposite logic input state.
6. For bushold parts, the bushold circuit is switched off when V
I
exceeds V
CC
allowing 5.5V on the input terminal.
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