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74ABT652

Octal Transceivers and Registers with 3-STATE Outputs

Fairchild Semiconductor 

Skew

(SOIC Package)

TA = −40°C to +85°C

TA = −40°C to +85°C

VCC = 4.5V–5.5V

VCC = 4.5V–5.5V

Symbol

Parameter

CL = 50 pF

8 Outputs Switching

CL = 250 pF

8 Outputs Switching

Units

(Note 16)

(Note 17)

Max

Max

tOSHL

(Note 14)

Pin to Pin Skew

HL Transitions

1.3

2.5

ns

tOSLH

(Note 14)

Pin to Pin Skew

LH Transitions

1.0

2.0

ns

tPS

(Note 18)

Duty Cycle

LH–HL Skew

2.0

4.0

ns

tOST

(Note 14)

Pin to Pin Skew

LH/HL Transitions

2.0

4.0

ns

tPV

(Note 15)

Device to Device Skew

LH/HL Transitions

2.5

4.5

ns

Note 14: Skew is defined as the absolute value of the difference between the actual propagation delays for any two separate outputs of the same device.

The specification applies to any outputs switching HIGH to LOW (tOSHL), LOW-to-HIGH (tOSLH), or any combination switching LOW-to-HIGH and/or HIGH-to-

LOW (tOST). This specification is guaranteed but not tested.

Note 15: Propagation delay variation for a given set of conditions (i.e., temperature and VCC) from device to device. This specification is guaranteed but not

tested

Note 16: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase (i.e., all LOW-to-

HIGH, HIGH-to-LOW, etc.).

Note 17: This specification is guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load

capacitors in the standard AC load.

Note 18: This describes the difference between the delay of the LOW-to-HIGH and the HIGH-to-LOW transition on the same pin. It is measured across all

the outputs (drivers) on the same chip, the worst (largest delta) number is the guaranteed specification. This specification is guaranteed but not tested.

Capacitance

Symbol

Parameter

Typ

CIN

Input Capacitance

5.0

CI/O (Note 19)

I/O Capacitance

11.0

Note 19: CI/O is measured at frequency, f = 1 MHz, per MIL-STD-883D, Method 3012.

Units

pF

pF

Conditions

(TA = 25°C)

VCC = 0V (non I/O pins)

VCC = 5.0V (An, Bn)

7

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