74LVC244ABQ 데이터 시트보기 (PDF) - Philips Electronics
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74LVC244ABQ Datasheet PDF : 17 Pages
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Philips Semiconductors
Octal buffer/line driver with 5 V tolerant
inputs/outputs (3-state)
Product specification
74LVC244A; 74LVCH244A
SYMBOL
PARAMETER
TEST CONDITIONS
OTHER
VCC (V)
MIN.
TYP.(1) MAX. UNIT
Tamb = −40 to +125 °C
VIH
HIGH-level input voltage
VIL
LOW-level input voltage
VOH
HIGH-level output voltage
VOL
LOW-level output voltage
ILI
IOZ
Ioff
ICC
∆ICC
IBH(L)
IBH(H)
IBH(LO)
IBH(HO)
input leakage current
3-state output OFF-state
current
power-off leakage supply
current
quiescent supply current
additional quiescent supply
current per input pin
bushold LOW sustaining
current
bushold HIGH sustaining
current
bushold LOW overdrive
current
bushold HIGH overdrive
current
VI = VIH or VIL
IO = −100 µA
IO = −12 mA
IO = −18 mA
IO = −24 mA
VI = VIH or VIL
IO = 100 µA
IO = 12 mA
IO = 24 mA
VI = 5.5 V or GND;
notes 2
VI = VIH or VIL;
VO = 5.5 V or GND;
notes 2
VI or VO = 5.5 V
VI = VCC or GND;
IO = 0
VI = VCC − 0.6 V;
IO = 0
VI = 0.8 V;
notes 3 and 4
VI = 2.0 V;
notes 3 and 4
notes 3 and 5
notes 3 and 5
1.2
2.7 to 3.6
1.2
2.7 to 3.6
2.7 to 3.6
2.7
3.0
3.0
2.7 to 3.6
2.7
3.0
3.6
3.6
0.0
3.6
2.7 to 3.6
3.0
3.0
3.6
3.6
VCC
−
2.0
−
−
−
−
−
VCC − 0.3 −
VCC − 0.65 −
VCC − 0.75 −
VCC − 1
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
60
−
−60
−
500
−
−500
−
−
V
−
V
GND
V
0.8
V
−
V
−
V
−
V
−
V
0.3
V
0.6
V
0.8
V
±20
µA
±20
µA
±20
µA
40
µA
5 000
µA
−
µA
−
µA
−
µA
−
µA
Notes
1. All typical values are measured at VCC = 3.3 V and Tamb = 25 °C.
2. For bushold parts, the bushold circuit is switched off when VI > VCC allowing 5.5 V on the input pin.
3. Valid for data inputs of bushold parts (74LVCH244A) only. 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.
2003 Oct 30
8
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