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74ABT2541 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. 74ABT2541
Description  Octal Buffer/Line Driver with 25Ω Series Resistors in the Outputs
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ABT2541 Datasheet(HTML) 4 Page - Fairchild Semiconductor

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4
Skew
(SOIC Package)
Note 12: 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 13: These specifications 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 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). The specification is guaranteed but not tested.
Note 15: 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.
Note 16: 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.
Capacitance
Note 17: COUT is measured at frequency f = 1 MHz; per MIL-STD-883, Method 3012.
Symbol
Parameter
TA = −40°C to +85°CTA = −40°C to +85°C
Units
VCC = 4.5V–5.5V
VCC = 4.5V–5.5V
CL = 50 pF
CL = 250 pF
8 Outputs Switching
8 Outputs Switching
(Note 12)
(Note 13)
Max
Max
tOSHL
Pin to Pin Skew
1.3
2.3
ns
(Note 14)
HL Transitions
tOSLH
Pin to Pin Skew
1.0
1.8
ns
(Note 14)
LH Transitions
tPS
Duty Cycle
2.0
5.0
ns
(Note 15)
LH–HL Skew
tOST
Pin to Pin Skew
2.0
5.0
ns
(Note 14)
LH/HL Transitions
tPV
Device to Device Skew
2.0
5.0
ns
(Note 16)
LH/HL Transitions
Symbol
Parameter
Typ
Units
Conditions
TA = 25°C
CIN
Input Capacitance
5.0
pF
VCC = 0V
COUT (Note 17)
Output Capacitance
9.0
pF
VCC = 5.0V


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