PI74FCT623T datasheet(3/3 Pages) PERICOM

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PI74FCT623T

Octal Bus Transceiver (3-State)

PS2021B

06/20/01

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623T

623AT

623CT

Com.

Parameters

Description

Conditions(1)

Min

Max

Min

Max

Min

Max

Units

tPLH

PropagationDelay

CL = 50 pF

1.5

7.5

1.5

5.5

1.5

4.8

tPHL

AN toBN

RL = 500

Ω

tPLH

PropagationDelay

1.5

7.5

1.5

5.5

1.5

4.8

tPHL

BN toAN

tPZH

OutputEnableTime

1.5

9.0

1.5

7.0

1.5

6.1

tPZL

GBAtoAN

tPZH

OutputDisableTime(3)

1.5

8.0

1.5

6.5

1.5

5.6

tPZL

GBAtoAN

tPZH

OutputEnableTime

1.5

9.0

1.5

7.0

1.5

6.1

tPZL

GABtoBN

tPZH

OutputDisableTime(3)

1.5

8.0

1.5

6.5

1.5

5.6

tPZL

GABtoBN

Notes:

1. See test circuit and wave forms.

2 Minimum limits are guaranteed but not tested on Propagation Delays.

3. This parameter is guaranteed but not production tested.

Parameters Description

Test Conditions

(1)

Min.

Typ

(2)

Max.

Units

ICC

Quiescent Power

VCC= Max.

VIN =GND

0.1

500

µA

Supply Current

or Vcc

∆ICC

Supply Current per

VCC = Max.,

VIN=3.4V(3)

0.5

2.0

Input @ TTL HIGH

ICCD

Supply Current per

VCC = Max., Outputs Open

VIN= VCC

0.15

0.25

mA/

Input per MHz(4)

GBA = GAB = GND,

VIN =GND

MHz

One Input Toggling, 50% Duty Cycle

Total Power Supply

VCC = Max., Outputs Open

VIN= VCC

1.5

3.5(5)

Current(6)

fCP = 10 MHZ, 50% Duty Cycle

VIN =GND

GBA = GAB = GND, 50% Duty Cycle

VIN=3.4V

1.8

4.5(5)

One Bit toggling at fI = 5 MHZ

VIN =GND

VCC = Max., Outputs Open

VIN= VCC

3.0

6.0(5)

fCP = 10 MHZ, 50% Duty Cycle

VIN =GND

GBA = GAB = GND, 50% Duty Cycle

VIN=3.4V

Eight Bits toggling at fI = 2.5 MHZ

VIN =GND

5.0

14.0(5)

50% Duty Cycle

Notes:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at Vcc = 5.0V, +25°C ambient.

3. Per TTL driven input (VIN = 3.4V); all other inputs at Vcc or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.

6. IC =IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC +

∆ICC DHNT + ICCD (fCP/2 + fINI)

ICC = Quiescent Current

∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

fI = Input Frequency

NI = Number of Inputs at fI

All currents are in milliamps and all frequencies are in megahertz.

Switching Characteristics over Operating Range

Power Supply Characteristics

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