參數(shù)資料
型號(hào): MC74LCX2952SD
廠商: ON SEMICONDUCTOR
元件分類(lèi): 總線收發(fā)器
英文描述: LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝: PLASTIC, SSOP-24
文件頁(yè)數(shù): 10/43頁(yè)
文件大?。?/td> 383K
代理商: MC74LCX2952SD
LCX Family Characteristics
LCX DATA
BR1339 — REV 3
13
MOTOROLA
LCX Family Characteristics
LCX and LVT Products
Product Family
74LCX244
74LVC244A
74LVT244A
Technology
CMOS
CMOS
BiCMOS
ICCL (mA)
0.01
0.01
12.0
ICC vs Frequency (50MHz)
130mA
145mA
275mA
Speed
6.5ns
6.5ns
4.1ns
Drive (2.0V/0.55V)
JEDEC (2.4V/0.4V)
>–24mA/24mA
–18mA/16mA
–24mA/24mA
–12mA/???
–32mA/64mA
–8mA/16mA
5V Tolerant
Inputs
Outputs
YES
YES
YES*
Power–Down High–Z (IOFF)
YES (10
A)
NO
YES (
±100A)
Data Retention
YES
YES
NO
* LVT claims, but does not specify, 5V–Tolerant outputs. LCX can be used to replace LVC; be careful when exchanging LCX with LVC as not all
LVC functions have 5V–tolerance!!
The following graph compares the 5V–tolerance capability of LCX, LVC and LVT. When LCX is not driving the bus (outputs are
disabled), the levels on that bus can exceed the LCX VCC with no adverse effect on the device or any loading on the bus. In fact,
test data shows that a disabled LCX output can “tolerate” signals over 13V on the outputs!
5V Output Tolerance
(IOZ vs Vout, VCC = 2.7V, +25°C)
0
25
50
75
100
2
4
6
8
10
12
14
Vout (V)
I OZ
(
LCX244
LVT244A
A)
LVC244A
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