74AHCT594BQ Просмотр технического описания (PDF) - Philips Electronics
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74AHCT594BQ Datasheet PDF : 29 Pages
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Philips Semiconductors
74AHC594; 74AHCT594
8-bit shift register with output register
Table 8. Dynamic characteristics type 74AHC594 …continued
GND = 0 V; tr = tf ≤ 3.0 ns; see Figure 15.
Symbol Parameter
Test conditions
fmax
maximum frequency CL = 50 pF; see Figure 9 and
SHCP or STCP
Figure 10
VCC = 3.0 V to 3.6 V
VCC = 4.5 V to 5.5 V
[1] Typical values are measured at nominal VCC.
[2] CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi × N + ∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
∑ (CL × VCC2 × fo) = sum of outputs.
Table 9. Dynamic characteristics type 74AHCT594
GND = 0 V; tr = tf ≤ 3.0 ns; VCC = 4.5 V to 5.5 V; see Figure 15
Symbol Parameter
Test conditions
Tamb = 25 °C[1]
tPLH
LOW-to-HIGH
propagation delay
SHCP to Q7S
tPHL
HIGH-to-LOW and
LOW-to-HIGH
propagation delay
SHCP to Q7S
see Figure 9
CL = 15 pF
CL = 50 pF
see Figure 9
CL = 15 pF
CL = 50 pF
tPLH
LOW-to-HIGH
see Figure 10
propagation delay
STCP to Qn
CL = 15 pF
CL = 50 pF
tPHL
HIGH-to-LOW
see Figure 10
propagation delay
STCP to Qn
CL = 15 pF
CL = 50 pF
tPHL
HIGH-to-LOW
see Figure 13
propagation delay
SHR to Q7S
CL = 15 pF
CL = 50 pF
HIGH-to-LOW
propagation delay
STR to Qn
see Figure 14
CL = 15 pF
CL = 50 pF
tW
pulse width HIGH or CL = 50 pF; see Figure 9 and
LOW SHCP and STCP Figure 10
pulse width HIGH or
LOW SHR and STR
CL = 50 pF; see Figure 13 and
Figure 14
Min
Typ
Max
Unit
65
-
-
MHz
70
-
-
MHz
Min
Typ
Max
Unit
-
3.8
6.3
ns
-
4.8
8.0
ns
-
4.1
6.7
ns
-
5.4
8.8
ns
-
3.5
5.7
ns
-
4.6
7.7
ns
-
3.7
6.1
ns
-
5.2
8.5
ns
-
4.3
7.0
ns
-
5.4
8.8
ns
-
4.5
7.4
ns
-
5.7
9.4
ns
5.5
-
-
ns
5.2
-
-
ns
74AHC_AHCT594_1
Product data sheet
Rev. 01 — 4 July 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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