參數(shù)資料
型號: 74LVTH2245MTCX
廠商: Fairchild Semiconductor
文件頁數(shù): 5/9頁
文件大?。?/td> 0K
描述: IC TRANSCVR TRI-ST 8BIT 20TSSOP
標(biāo)準(zhǔn)包裝: 2,500
系列: 74LVTH
邏輯類型: 收發(fā)器,非反相
元件數(shù): 1
每個元件的位元數(shù): 8
輸出電流高,低: 32mA,64mA; 12mA,12mA
電源電壓: 2.7 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 帶卷 (TR)
1999 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74LVT2245, 74LVTH2245 Rev. 1.5.0
5
74L
VT2245,
74L
VTH2245
Lo
w
V
olta
g
e
Octal
Bidirectional
T
ransceiver
with
3-ST
A
TE
Inputs/Outputs
and
25
Series
Resistor
s
in
the
B
P
o
rt
Outputs
Dynamic Switching Characteristics(6)
Notes:
6. Characterized in SOIC package. Guaranteed parameter, but not tested.
7. Max number of outputs defined as (n). n–1 data inputs are driven 0V to 3V. Output under test held LOW.
AC Electrical Characteristics
Note:
8. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
separate outputs of the same device. The specification applies to any outputs switching in the same direction,
either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).
Capacitance(9)
Note:
9. Capacitance is measured at frequency f
= 1MHz, per MIL-STD-883, Method 3012.
Symbol
Parameter
VCC (V)
Conditions
TA = 25°C
Units
CL = 50pF, RL = 500
Min.
Typ.
Max.
VOLP
Quiet Output Maximum
Dynamic VOL
3.3
(7)
0.8
V
VOLV
Quiet Output Minimum
Dynamic VOL
3.3
(7)
–0.8
V
Symbol
Parameter
TA = –40°C to +85°C,
CL = 50pF, RL = 500
Units
VCC = 3.3V ± 0.3V
VCC = 2.7V
Min.
Max.
Min.
Max.
tPLH
Propagation Delay Data to B Port Output
1.2
4.4
1.2
5.1
ns
tPHL
1.2
4.4
1.2
5.1
tPLH
Propagation Delay Data to A Port Output
1.2
3.6
1.2
4.0
ns
tPHL
1.2
3.5
1.2
4.0
tPZH
Output Enable Time for B Port Output
1.3
6.2
1.3
7.3
ns
tPZL
1.7
6.2
1.7
7.3
tPZH
Output Enable Time for A Port Output
1.3
5.5
1.3
7.1
ns
tPZL
1.7
5.7
1.7
6.7
tPHZ
Output Disable Time for B Port Output
2.0
5.9
2.0
6.5
ns
tPLZ
2.0
5.4
2.0
5.7
tPHZ
Output Disable Time for A Port Output
2.0
5.9
2.0
6.5
ns
tPLZ
2.0
5.0
2.0
5.1
tOSHL, tOSLH A Port Output to Output Skew
(8)
1.0
ns
tOSHL, tOSLH B Port Output to Output Skew
(8)
1.0
ns
Symbol
Parameter
Conditions
Typical
Units
CIN
Input Capacitance
VCC = 0V, VI = 0V or VCC
4pF
CI/O
Input/Output Capacitance
VCC = 3.0V, VO = 0V or VCC
8pF
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