74LVC32244 datasheet(7/16 Pages) PHILIPS

7 / 16 page

1999 Aug 31

Philips Semiconductors

Product speciﬁcation

32-bit buffer/line driver; 5 V input/output

tolerant; 3-state

74LVC32244A;

74LVCH32244A

DC CHARACTERISTICS

Over recommended operating conditions; voltage are referenced to GND (ground=0V).

Notes

1. All typical values are at VCC = 3.3 V and Tamb =25 °C.

2. For bus hold parts the bus hold circuit is switched off when VI exceeds VCC allowing 5.5 V on the input terminal.

3. Valid for data inputs of bus hold parts only (LVCH32xxx-A).

4. For data inputs only. Control inputs do not have a bus hold circuit.

5. The specified sustaining current at the data input holds the input below the specified VI level.

6. The specified overdrive current at the data input forces the data input to the opposite logic input level.

SYMBOL

PARAMETER

TEST CONDITIONS

Tamb (°C)

UNIT

OTHER

VCC (V)

−40 to +85

MIN.

TYP.(1) MAX.

VIH

HIGH-level input voltage

1.2

VCC

−−

2.7 to 3.6 2.0

−−

VIL

LOW-level input voltage

1.2

−−

GND

2.7 to 3.6

−−

0.8

VOH

HIGH-level output voltage

VI =VIH or VIL

IO = −12 mA

2.7

VCC − 0.5 −−

IO = −100 µA

3.0

VCC − 0.2 VCC

−

IO = −18 mA

3.0

VCC − 0.6 −−

IO = −24 mA

3.0

VCC − 0.8 −−

VOL

LOW-level output voltage

VI =VIH or VIL

IO =12mA

2.7

−−

0.40

IO = 100 µA

3.0

−−

0.20

IO =24mA

3.0

−−

0.55

input leakage current

VI = 5.5 V or GND;

note 2

3.6

−±0.1

±5

µA

IOZ

3-state output OFF-state current

VI =VIH or VIL;

VO = 5.5 V or GND

3.6

−

0.1

±5

µA

Ioff

power off leakage supply

VI or VO = 5.5 V

0.0

−

0.1

±10

µA

ICC

quiescent supply current

VI =VCC or GND; IO = 0

3.6

−

0.1

µA

∆I

additional quiescent supply

current per input pin

VI =VCC − 0.6 V; IO = 0

2.7 to 3.6

−

500

µA

IBHL

bus hold LOW sustaining current

VI = 0.8 V;

notes 3, 4 and 5

3.0

−−

µA

IBHH

bus hold HIGH sustaining current VI = 2.0 V;

notes 3, 4 and 5

3.0

−75

−−

µA

IBHLO

bus hold LOW overdrive current

notes 3, 4 and 6

3.6

500

−−

µA

IBHHO

bus hold HIGH overdrive current

notes 3, 4 and 6

3.6

−500

−−

µA

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