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74ABT2952CMSA Scheda tecnica(PDF) 5 Page - Fairchild Semiconductor

Il numero della parte 74ABT2952CMSA
Spiegazioni elettronici  Octal Registered Transceiver
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ABT2952CMSA Scheda tecnica(HTML) 5 Page - Fairchild Semiconductor

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Extended AC Electrical Characteristics
(SOIC Package)
Note 8: 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 9: This specification is guaranteed but not tested. The limits represent propagation delay 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.
Note 10: This specification is guaranteed but not tested. The limits represent propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.) with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load.
Note 11: The 3-STATE delays are dominated by the RC network (500
Ω, 250 pF) on the output and has been excluded from the datasheet.
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: 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 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: 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: CI/O 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°CTA = −40°C to +85°C
Units
VCC = 4.5V to 5.5V
VCC = 4.5V to 5.5V
VCC = 4.5V to 5.5V
CL = 50 pF
CL = 250 pF
CL = 250 pF
8 Outputs Switching
(Note 9)
8 Outputs Switching
(Note 8)
(Note 10)
Min
Max
Min
Max
Min
Max
tPLH
Propagation Delay
1.5
6.0
2.0
8.0
2.5
10.5
ns
tPHL
CPA or CPB to An or Bn
1.5
6.0
2.0
8.0
2.5
10.5
tPZH
Output Enable Time
1.5
6.0
2.0
8.0
2.5
11.5
ns
tPZL
OEA or OEB to An or Bn
1.5
6.0
2.0
8.0
2.5
11.5
tPHZ
Output Disable Time
1.5
6.0
(Note 11)
(Note 11)
ns
tPZL
OEA or OEB to An or Bn
1.5
6.0
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
1.0
1.5
ns
(Note 14)
HL Transitions
tOSLH
Pin to Pin Skew
1.0
2.0
ns
(Note 14)
LH Transitions
tPS
Duty Cycle
2.0
4.5
ns
(Note 15)
LH–HL Skew
tOST
Pin to Pin Skew
2.1
4.5
ns
(Note 14)
LH/HL Transitions
tPV
Device to Device Skew
2.5
5.0
ns
(Note 16)
LH/HL Transitions
Symbol
Parameter
Typ
Units
Conditions
TA = 25°C
CIN
Input Capacitance
5
pF
VCC = 0V (Non I/O Pins)
CI/O (Note 17)
Output Capacitance
11
pF
VCC = 5.0V (An, Bn)


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