参数资料
型号: 74LVTH2245SJX
厂商: Fairchild Semiconductor
文件页数: 5/9页
文件大小: 0K
描述: IC TRANSCVR TRI-ST 8BIT 20SOP
标准包装: 2,000
系列: 74LVTH
逻辑类型: 收发器,非反相
元件数: 1
每个元件的位元数: 8
输出电流高,低: 32mA,64mA; 12mA,12mA
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.209",5.30mm 宽)
供应商设备封装: 20-SOIC
包装: 带卷 (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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