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74ABT541 Datasheet(Folha de dados) 6 Page - Fairchild Semiconductor

Nome de Peças. 74ABT541
descrição  Octal Buffer/Line Driver with 3-STATE Outputs
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Fbricantes  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
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©1992 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74ABT541 Rev. 1.4
6
Skew
SOIC package.
Notes:
11. 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.)
12. These specifications guaranteed but not tested. The limits represent propagation delays with 250pF load capacitors
in place of the 50pF load capacitors in the standard AC load.
13. 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.
14. 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.
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.
Capacitance
Note:
16. COUT is measured at frequency of f = 1 MHz, per MIL-STD-883, Method 3012.
Symbol
Parameter
TA = –40°C to +85°C,
VCC = 4.5V to 5.5V,
CL = 50pF,
8 Outputs
Switching(11)
TA = –40°C to +85°C,
VCC = 4.5V to 5.5V,
CL = 250pF,
8 Outputs
Switching(12)
Units
Max.
Max.
tOSHL
(13)
Pin to Pin Skew, HL Transitions
1.3
2.3
ns
tOSLH
(13)
Pin to Pin Skew, LH Transitions
1.0
1.8
ns
tPS
(14)
Duty Cycle, LH/HL Skew
2.0
3.5
ns
tOST
(13)
Pin to Pin Skew, LH/HL Transitions
2.0
3.5
ns
tPV
(15)
Device to Device Skew, LH/HL
Transitions
2.0
3.5
ns
Symbol
Parameter
Conditions
TA = 25°C
Typ.
Units
CIN
Input Capacitance
VCC = 0.0V
5.0
pF
COUT
(16)
Output Capacitance
VCC = 5.0V
9.0
pF




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