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74LVT2244PW 数据表(PDF) 2 Page - NXP Semiconductors

部件名 74LVT2244PW
功能描述  3.3V Octal buffer/line driver with 30ohm series termination resistors 3-State
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

74LVT2244PW 数据表(HTML) 2 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LVT2244
3.3V Octal buffer/line driver with 30
series termination resistors (3-State)
2
1998 Feb 19
853-1867 18985
FEATURES
Octal bus interface
3-State buffers
Output capability: +12mA/-12mA
TTL input and output switching levels
Input and output interface capability to systems at 5V supply
Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
Power-up 3-State
Live insertion/extraction permitted
No bus current loading when output is tied to 5V bus
Latch-up protection exceeds 500mA per JEDEC Std 17
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
Outputs include series resistance of 30Ω, making external
termination resistors unnecessary.
DESCRIPTION
The LVT2244 is a high-performance BiCMOS product designed for
VCC operation at 3.3V.
This device is an octal buffer that is ideal for driving bus lines. The
device features two Output Enables (OE1, OE2), each controlling
four of the 3-State outputs.
The 74LVT2244 is designed with 30
Ω series resistance in both the
High and Low states of the output. This design reduces the line
noise in applications such as memory address drivers, clock drivers
and bus receivers/transmitters.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
Tamb = 25°C; GND = 0V
TYPICAL
UNIT
tPLH
tPHL
Propagation delay
nAx to nYx
CL = 50pF;
VCC = 3.3V
2.9
2.9
ns
CIN
Input capacitance
VI = 0V or 3.0V
4
pF
COUT
Output capacitance
Outputs disabled; VO = 0V or 3.0V
7
pF
ICCZ
Total supply current
Outputs disabled; VCC = 3.6V
0.13
mA
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin Plastic SOL
–40
°C to +85°C
74LVT2244 D
74LVT2244 D
SOT163-1
20-Pin Plastic SSOP Type II
–40
°C to +85°C
74LVT2244 DB
74LVT2244 DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40
°C to +85°C
74LVT2244 PW
7LVT2244PW DH
SOT360-1
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1OE
1A0
2Y3
1A1
2Y2
1A2
2Y1
1A3
2Y0
1Y3
GND
2A1
1Y2
2A2
1Y1
2A3
1Y0
2OE
VCC
2A0
SV00010
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
2, 4, 6, 8
1A0 – 1A3
Data inputs
11. 13, 15, 17
2A0 – 2A3
Data inputs
18, 16, 14, 12
1Y0 – 1Y3
Data outputs
9, 7, 5, 3
2Y0 – 2Y3
Data outputs
1, 19
1OE, 2OE
Output enables
10
GND
Ground (0V)
20
VCC
Positive supply voltage


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