74AHC245D-Q100 Просмотр технического описания (PDF) - NXP Semiconductors.
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74AHC245D-Q100 Datasheet PDF : 17 Pages
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Nexperia
74AHC245-Q100; 74AHCT245-Q100
Octal bus transceiver; 3-state
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ[1] Max Min
Max
Min
Max
tdis
disable time OE to An; OE to Bn;
[4]
signal name DIR;
see Figure 6
CL = 15 pF
- 5.0 14.4 1.0
15.5
1.0
18.0 ns
CL = 50 pF
CPD
power
fi = 1 MHz;
dissipation VI = GND to VCC
capacitance
- 6.0 15.4 1.0
16.5
1.0
19.5 ns
[5] -
15 -
-
-
-
-
pF
[1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2] tpd is the same as tPLH and tPHL.
[3] ten is the same as tPZL and tPZH.
[4] tdis is the same as tPLZ and tPHZ.
[5] CPD is used to determine the dynamic power dissipation (PD in W).
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 the outputs.
10.1 Waveforms
VI
An, Bn input
GND
VOH
tPLH
Bn, An output
VOL
VM
VM
VM
tPHL
VM
mna176
Fig 5.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Input to output propagation delays
74AHC_AHCT245_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 21 March 2013
© Nexperia B.V. 2017. All rights reserved
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