參數(shù)資料
型號(hào)： 7LVT2245PWDH
廠商： NXP Semiconductors N.V.
英文描述： 3.3V Octal transceiver with 30ohm termination resistors 3-State
中文描述： 3.3八路收發(fā)器與30ohm端接電阻器三態(tài)
文件頁(yè)數(shù)： 2/10頁(yè)
文件大?。?/td> 93K
代理商： 7LVT2245PWDH
Philips Semiconductors
Product specification
74LVT2245
3.3V Octal transceiver with 30
termination resistors (3-State)
2
1998 Feb 19
853-1828 18985
FEATURES
30
output termination resistors
Octal bidirectional 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
Live insertion/extraction permitted
Power-up 3-State
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
DESCRIPTION
The LVT2245 is a high-performance BiCMOS product designed for
V
CC
operation at 3.3V.
This device is an octal transceiver featuring non-inverting 3-State
bus compatible outputs in both send and receive directions. The
control function implementation minimizes external timing
requirements. The device features an Output Enable (OE) input for
easy cascading and a Direction (DIR) input for direction control.
The 74LVT2245 is designed with 30
series resistance in both the
High and Low states of the output. This design reduces line noise in
applications such as memory address drivers, clock drivers, and bus
transceivers/transmitters.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
°
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
An to Bn or Bn to An
C
L
= 50pF;
V
CC
= 3.3V
3.2
3.1
ns
C
IN
Input capacitance
DIR, OE
V
I
= 0V or 3.0V
4
pF
C
I/O
I/O pin capacitance
Outputs disabled; V
I/O
= 0V or 3.0V
10
pF
I
CCZ
Total supply current
Outputs disabled; V
CC
= 3.6V
0.13
mA
ORDERING INFORMATION
PACKAGES
20-Pin Plastic SO
20-Pin Plastic SSOP
20-Pin Plastic TSSOP
TEMPERATURE RANGE
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
OUTSIDE NORTH AMERICA
74LVT2245 D
74LVT2245 DB
74LVT2245 PW
NORTH AMERICA
74LVT2245 D
74LVT2245 DB
7LVT2245PW DH
DWG NUMBER
SOT163-1
SOT339-1
SOT360-1
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DIR
A0
A1
A2
A3
A4
A5
A6
A7
GND
V
CC
OE
B0
B1
B2
B3
B4
B5
B6
B7
SV00014
LOGIC SYMBOL
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
OE
19
DIR
1
SV00016
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