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): 6/22頁
文件大?。?/td> 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
14 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Test data is given in Table 12.
Denitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistor.
Fig 7.
Load circuitry for switching times
Table 12:
Test data
Type
Input
Test
VI
tr, tf
tPHL, tPLH
tPZH, tPHZ
tPZL, tPLZ
74HC245
VCC
6 ns
open
GND
VCC
74HCT245
3 V
6 ns
open
GND
VCC
mgk563
D.U.T
VCC
VI
VO
RT
RL = 1 k
CL
50 pF
open
PULSE
GENERATOR
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