參數(shù)資料
型號(hào)： 74LVT245B
廠商： NXP Semiconductors N.V.
英文描述： 3.3V Octal transceiver with direction pin (3-State)
中文描述： 3.3八路收發(fā)器的方向引腳（3態(tài)）
文件頁(yè)數(shù)： 2/10頁(yè)
文件大?。?/td> 106K
代理商： 74LVT245B
Philips Semiconductors
Product specification
74LVT245B
3.3V Octal transceiver with direction pin (3-State)
2
1999 Mar 19
853-2143 21060
FEATURES
Octal bidirectional bus interface
3-State buffers
Output capability: +64mA/-32mA
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 LVT245B 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.
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
2.4
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
ORDERING INFORMATION
74LVT245B D
74LVT245B DB
74LVT245B PW
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
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
DIR
Direction control input
2, 3, 4, 5, 6, 7, 8, 9
A0 – A7
Data inputs/outputs (A side)
18, 17, 16, 15, 14,
13, 12, 11
B0 – B7
Data inputs/outputs (B side)
19
OE
Output enable input
(active–Low)
10
GND
Ground (0V)
20
V
CC
Positive supply voltage
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74LVT245BBQ-G 功能描述:總線收發(fā)器 OCTAL TRANSCEIVER RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
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