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74FR16245 Datasheet(Fiches technique) 5 Page - Rochester Electronics

Numéro de pièce 74FR16245
Description  16-Bit Transceiver with 3-STATE Outputs Separate control pins for each byte
Télécharger  5 Pages
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Fabricant  ROCHESTER [Rochester Electronics]
Site Internet  http://www.rocelec.com/
Logo ROCHESTER - Rochester Electronics

74FR16245 Datasheet(HTML) 5 Page - Rochester Electronics

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74FR16245
Specification Number 74FR16245-CI(F) Rev A
Page 5 of 5
www.fairchildsemi.com
4
AC Electrical Characteristics
Extended AC Characteristics
Note 3: Skew is defined as the absolute value of the difference between the actual propagation delays for any two outputs of the same device. The specifi-
cation applies to any outputs switching HIGH-to-LOW (tOSHL) LOW-to-HIGH (tOSLH), or HIGH-to-LOW and/or LOW-to-HIGH (tOST). Specifications guaran-
teed with all outputs switching in phase.
Note 4: 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, 3-STATE-to-HIGH, etc.
Note 5: 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. This specification pertains to single output switching only.
Symbol
Parameter
TA = +25°CTA = 0°C to +70°C
Unit
VCC = +5.0V
VCC = +5.0V
CL = 50 pF
CL = 50 pF
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
1.3
2.7
4.3
1.3
4.3
ns
tPHL
An to Bn or Bn to An
1.3
2.2
4.3
1.3
4.3
tPZH
Output Enable Time
3.9
6.9
13.9
3.9
13.9
ns
tPZL
3.9
9.7
13.9
3.9
13.9
tPHZ
Output Disable Time
1.8
3.9
6.3
1.8
6.3
ns
tPLZ
1.8
4.4
6.3
1.8
6.3
Symbol
Parameter
TA = 0°C to +70°CTA = 0°C to +70°C
Unit
VCC = +5.0V
VCC = +5.0V
CL = 50 pF
CL = 250 pF
16 Outputs Switching
(Note 4)
(Note 5)
Min
Max
Min
Max
tPLH
Propagation Delay
1.3
5.8
3.2
8.2
ns
tPHL
An to Bn or Bn to An
1.3
5.8
3.2
8.2
tPZH
Output Enable Time
3.9
14.6
ns
tPZL
3.9
14.6
tPHZ
Output Disable Time
1.8
6.3
ns
tPLZ
1.8
6.3
tOSHL
Pin-to-Pin Skew
1.2
ns
(Note 3)
for HL Transitions
tOSLH
Pin-to-Pin Skew
2.2
ns
(Note 3)
for LH Transitions
tOST
Pin-to-Pin Skew
2.5
ns
(Note 3)
for HL/LH Transitions
Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes
only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves
the right to make changes without further notice to any specification herein.


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