74LVT646DB 查看數據表（PDF） - Philips Electronics

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74LVT646DB

3.3V Octal bus transceiver/register (3-State)

Philips Electronics 

Philips Semiconductors

3.3V Octal bus transceiver/register (3-State)

Product specification

74LVT646

DC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

Temp = -40°C to +85°C

MIN

TYP

NO TAG

MAX

UNIT

VIK

Input clamp voltage

VCC = 2.7V; IIK = –18mA

–0.9 –1.2 V

VCC = 2.7 to 3.6V; IOH = –100µA

VCC-0.2 VCC-0.1

VOH High-level output voltage

VCC = 2.7V; IOH = –8mA

2.4

2.5

V

VCC = 3.0V; IOH = –32mA

2.0

2.2

VCC = 2.7V; IOL = 100µA

0.1

0.2

VCC = 2.7V; IOL = 24mA

0.3

0.5

VOL

Low–level output voltage

VCC = 3.0V; IOL = 16mA

0.25

0.4

V

VCC = 3.0V; IOL = 32mA

0.3

0.5

VCC = 3.0V; IOL = 64mA

0.4

0.55

VRST Power-up output low voltage5 VCC = 3.6V; IO = 1mA; VI = GND or VCC

0.13 0.55 V

II

Input leakage current

VCC = 3.6V; VI = VCC or GND

VCC = 0 or 3.6V; VI = 5.5V

VCC = 3.6V; VI = 5.5V

VCC = 3.6V; VI = VCC

Control pins

I/O Data pins4

±0.1

±1

1

10

1

20

µA

0.1

1

VCC = 3.6V; VI = 0

–1

-5

IOFF Output off current

IHOLD Bus Hold current A inputs6

IEX

Current into an output in the

High state when VO > VCC

VCC = 0V; VI or VO = 0 to 4.5V

VCC = 3V; VI = 0.8V

VCC = 3V; VI = 2.0V

VCC = 0V to 3.6V; VCC = 3.6V

VO = 5.5V; VCC = 3.0V

75

–75

±500

1

±100 µA

150

–150

µA

60

125 µA

IPU/PD

Power up/down 3-State output VCC ≤ 1.2V; VO = 0.5V to VCC; VI = GND or VCC;

current3

OE/OE =Don’t care

15

±100 µA

ICCH

VCC = 3.6V; Outputs High, VI = GND or VCC, IO = 0

0.13 0.19

ICCL Quiescent supply current

VCC = 3.6V; Outputs Low, VI = GND or VCC, IO = 0

3

12 mA

ICCZ

VCC = 3.6V; Outputs Disabled; VI = GND or VCC, IO = 0

0.13 0.19

∆ICC

Additional supply current per

input pin2

VCC = 3V to 3.6V; One input at VCC-0.6V,

Other inputs at VCC or GND

0.1

0.2 mA

NOTES:

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

2. This is the increase in supply current for each input at the specified voltage level other than VCC or GND

3. This parameter is valid for any VCC between 0V and 1.2V with a transition time of up to 10msec. From VCC = 1.2V to VCC = 3.3V ± 0.3V a

transition time of 100µsec is permitted. This parameter is valid for Tamb = 25°C only.

4. Unused pins at VCC or GND.

5. For valid test results, data must not be loaded into the flip-flops (or latches) after applying power.

6. This is the bus hold overdrive current required to force the input to the opposite logic state.

1998 Feb 19

6

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