參數(shù)資料
型號： 74HC_HCT245_CNV_2
廠商： NXP Semiconductors N.V.
英文描述： Octal bus transceiver; 3-state
中文描述： 8個三態(tài)總線收發(fā)器, 3態(tài)
文件頁數(shù)： 12/22頁
文件大小： 130K
代理商： 74HC_HCT245_CNV_2
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
2 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
[1]
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 outputs.
4.
Ordering information
CI
input capacitance
-
3.5
-
pF
CI/O
input/output capacitance
-
10
-
pF
CPD
power dissipation
capacitance per
transceiver
VI = GND to
VCC 1.5 V
[1] -30
-
pF
Table 1:
Quick reference data …continued
GND = 0 V; Tamb =25 °C; tr =tf = 6 ns.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 2:
Ordering information
Type number
Package
Temperature range
Name
Description
Version
74HC245N
40 °C to +125 °C
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
74HC245D
40 °C to +125 °C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74HC245PW
40 °C to +125 °C
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
74HC245DB
40 °C to +125 °C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
74HC245BQ
40 °C to +125 °C
DHVQFN20
plastic dual-in-line compatible thermal enhanced
very thin quad at package no leads; 20 terminals;
body 2.5
× 4.5 × 0.85 mm
SOT764-1
74HCT245N
40 °C to +125 °C
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
74HCT245D
40 °C to +125 °C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74HCT245PW
40 °C to +125 °C
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
74HCT245DB
40 °C to +125 °C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
74HCT245BQ
40 °C to +125 °C
DHVQFN20
plastic dual-in-line compatible thermal enhanced
very thin quad at package no leads; 20 terminals;
body 2.5
× 4.5 × 0.85 mm
SOT764-1
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