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74ABT646AN

Octal bus transceiver/register (3-State)

Philips Electronics 

Philips Semiconductors

Octal bus transceiver/register (3-State)

Product specification

74ABT646A

DC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

Tamb = +25°C

Tamb = –40°C

to +85°C

UNIT

Min Typ Max Min Max

VIK

Input clamp voltage

VOH High–level output voltage

VOL

VRST

Low–level output voltage

Power-up output low

voltage3

VCC = 4.5V; IIK = –18mA

VCC = 4.5V; IOH = –3mA; VI = VIL or VIH

VCC = 5.0V; IOH = –3mA; VI = VIL or VIH

VCC = 4.5V; IOH = –32mA; VI = VIL or VIH

VCC = 4.5V; IOL = 64mA; VI = VIL or VIH

VCC = 5.5V; IO = 1mA; VI = GND or VCC

–0.9 –1.2

–1.2 V

2.5 3.0

2.5

V

3.0 3.5

3.0

V

2.0 2.4

2.0

V

0.3 0.55

0.55 V

0.13 0.55

0.55 V

Input leakage Control pins VCC = 5.5V; VI = GND or 5.5V

II

current

Data pins

VCC = 5.5V; VI = GND or 5.5V

IOFF

Power-off leakage current

VCC = 0.0V; VO or VI ≤ 4.5V

±0.01

±5

±5.0

±1.0

±100

±100

±1.0 µA

±100 µA

±100 µA

IPU/IPD

Power-up/down 3-State

output current4

VCC = 2.1V; VO = 0.5V; VI = GND or VCC;

V OE = Don’t care

±5.0 ±50

±50 µA

IIH + IOZH 3–State output High current VCC = 5.5V; VO = 2.7V; VI = VIL or VIH

5.0 50

50

µA

IIL + IOZL 3–State output Low current VCC = 5.5V; VO = 0.5V; VI = VIL or VIH

–5.0 –50

–50 µA

ICEX Output High leakage current VCC = 5.5V; VO = 5.5V; VI = GND or VCC

5.0 50

50

µA

IO

Output current1, 5

VCC = 5.5V; VO = 2.5V

–40 –65 –180 –40 –180 mA

ICCH

VCC = 5.5V; Outputs High, VI = GND or VCC

110 250

250 µA

ICCL

ICCZ

Quiescent supply current

VCC = 5.5V; Outputs Low, VI = GND or VCC

VCC = 5.5V; Outputs 3–State;

VI = GND or VCC

20

30

110 250

30 mA

250 µA

∆ICC

Additional supply current per VCC = 5.5V; one input at 3.4V,

input pin2

other inputs at VCC or GND; VCC = 5.5V

0.6 1.5

1.5 mA

NOTES:

1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.

2. This is the increase in supply current for each input at 3.4V.

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

4. This parameter is valid for any VCC between 0V and 2.1V, with a transition time of up to 10msec. From VCC = 2.1V to VCC = 5V ± 10%, a

transition time of up to 100µsec is permitted.

5. This data sheet limit may vary among suppliers.

1998 Feb 17

6

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