參數(shù)資料
型號: 935064910112
廠商: NXP SEMICONDUCTORS
元件分類: 總線收發(fā)器
英文描述: ABT SERIES, OCTAL 1-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝: 5.30MM, PLASTIC, MS-150, SOT-339-1, SSOP2-20
文件頁數(shù): 5/9頁
文件大小: 112K
代理商: 935064910112
Philips Semiconductors
Product data
74ABT245
Octal transceiver with direction pin (3-State)
2003 Feb 06
5
AC CHARACTERISTICS
GND = 0 V; tR = tF = 2.5 ns; CL = 50 pF, RL = 500
LIMITS
SYMBOL
PARAMETER
WAVEFORM
Tamb = +25 °C
VCC = +5.0 V
Tamb = –40 °C to +85 °C
VCC = +5.0 V ±0.5 V
UNIT
Min
Typ
Max
Min
Max
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
1
1.0
2.2
2.9
4.1
4.2
1.0
4.6
ns
tPZH
tPZL
Output enable time
to HIGH and LOW level
2
1.3
2.3
3.0
4.0
4.8
5.8
1.3
2.3
5.3
6.3
ns
tPHZ
tPLZ
Output disable time
from HIGH and LOW Level
2
1.0
4.7
4.1
6.2
5.8
1.0
7.2
6.3
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
An or Bn
INPUT
VM
Bn or An
OUTPUT
VM
tPLH
tPHL
SA00124
Waveform 1. Waveforms showing the input to output
propagation delays
nOE INPUT
OUTPUT
VM
tPZH
tPHZ
VOH
VM
VOL
tPZL
tPLZ
3.5V
0V
VOL + 0.3V
VOH – 0.3V
SA00024
Waveform 2. Waveforms showing the 3-State Output Enable
and Disable times
TEST CIRCUIT AND WAVEFORMS
CL = 50 pF
500
Load Circuit
DEFINITIONS
CL =
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
TEST
S1
tpd
open
tPLZ/tPZL
7 V
tPHZ/tPZH
open
SA00012
500
From Output
Under Test
S1
7 V
Open
GND
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