74LVC244A 查看數據表（PDF） - Philips Electronics
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74LVC244A
Philips Electronics
74LVC244A Datasheet PDF : 10 Pages
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Philips Semiconductors
Octal buffer/line driver with 5-volt
tolerant inputs/outputs (3-State)
Product specification
74LVC244A
74LVCH244A
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
MIN
TYP1 MAX
VIH
HIGH level Input voltage
VIL
LOW level Input voltage
VOH HIGH level output voltage
VOL LOW level output voltage
II
IOZ
Ioff
ICC
∆ICC
Input leakage current
3-State output OFF-state current
Power off leakage supply
Quiescent supply current
Additional quiescent supply current
per input pin
VCC = 1.2V
VCC = 2.7 to 3.6V
VCC = 1.2V
VCC = 2.7 to 3.6V
VCC = 2.7V; VI = VIH or VIL; IO = –12mA
VCC = 3.0V; VI = VIH or VIL; IO = –100µA
VCC = 3.0V; VI = VIH or VIL; IO = –18mA
VCC = 3.0V; VI = VIH or VIL; IO = –24mA
VCC = 2.7V; VI = VIH or VIL; IO = 12mA
VCC = 3.0V; VI = VIH or VIL; IO = 100µA
VCC = 3.0V; VI = VIH or VIL; IO = 24mA
VCC = 3.6V; VI = 5.5V or GND
VCC = 3.6V; VI = VIH or VIL; VO = 5.5V or GND
VCC = 0.0V; VI or VO = 5.5V
VCC = 3.6V; VI = VCC or GND; IO = 0
VCC = 2.7V to 3.6V; VI = VCC –0.6V; IO = 0
VCC
2.0
VCC*0.5
VCC*0.2 VCC
VCC*0.6
VCC*0.8
GND
"0.1
0.1
0.1
0.1
GND
0.8
0.40
0.20
0.55
"5
"5
"10
10
5
500
IBHL
Bushold LOW sustaining
current2, 3, 4
VCC = 3.0V; VI =0.8V
75
–
–
IBHH
Bushold HIGH sustaining
current2, 3, 4
VCC = 3.0V; VI =2.0V
–75
–
–
IBHLO Bushold LOW overdrive current2, 3, 5 VCC = 3.6V
500
–
–
IBHHO Bushold HIGH overdrive current2, 3, 5 VCC = 3.6V
–500
–
–
NOTES:
1. All typical values are at VCC = 3.3V and Tamb = 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 VI exceeds VCC allowing 5.5V on the input terminal.
UNIT
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
µA
µA
1998 May 20
5
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