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參數(shù)資料
| 型號： | 74F1245 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal transceiver 3-State |
| 中文描述： | 八路收發(fā)器三態(tài) |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 86K |
| 代理商： | 74F1245 |
Philips Semiconductors
Product specification
74F1245
Octal transceiver (3-State)
2
1995 Mar 01
853-0885 14921
FEATURES
Same function and pinout as 74F245
High impedance NPN base inputs for reduced loading (70
μ
A in
Low and High states)
Useful in applications where light loading bus loading or direct
interface with output of a MOS microprocessor is desired
Octal bidirectional bus interface
Glitch free during 3-State power up and power down
3-State buffer outputs sink 64mA and source 15mA
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL SUPPLY
CURRENT (TOTAL)
74F1245
5.0ns
115mA
DESCRIPTION
The 74F1245 is an octal transceiver featuring non-inverting 3-State
bus compatible outputs in both transmit and receive directions. The
B port outputs are capable of sinking 64mA and sourcing up to
15mA, producing very good capacitive drive characteristics. The
device features an Output Enable (OE) input for easy cascading and
Transmit/Receive (T/R) input for direction control. The 3-State
outputs, B0–B7, have been designed to prevent output bus loading if
the power is removed from the device.
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
N74F1245N
DRAWING
NUMBER
20-Pin Plastic DIP
SOT146-1
20-Pin Plastic SOL
N74F1245D
SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
LOAD VALUE HIGH/LOW
70
μ
A/70
μ
A
40
μ
A/20
μ
A
40
μ
A/20
μ
A
3.0mA/24mA
A0–A7, B0–B7
A and B port inputs
3.5/0.117
OE
Output Enable input (active Low)
2.0/0.033
T/R
Transmit/Receive input
2.0/0.033
A0–A7
A port outputs
150/40
B0–B7
B port outputs
750/106.7
15mA/64mA
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the High state and 0.6mA in the Low state.
PIN CONFIGURATION
SF00198
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
V
CC
OE
B0
B1
B2
B3
B4
B6
B5
B7
LOGIC SYMBOL
B2
B3
B4
B5
16
15
14
13
2
3
4
V
= Pin 20
GND = Pin 10
SF00199
B1
17
B0
18
19
1
OE
T/R
A0
A1
A2
A3
A4
A5
5
6
7
B6
B7
12
11
A6
A7
8
9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F125D | 4-Bit Buffer/Driver |
| 74F125N | 4-Bit Buffer/Driver |
| 74F126D | 4-Bit Buffer/Driver |
| 74F126N | 4-Bit Buffer/Driver |
| 74F125 | Quad buffers 3-State |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F125 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Quad Buffer (3-STATE) |
| 74F125AP | 功能描述:固定電感器 12uH 10% RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| 74F125AP-RC | 功能描述:固定電感器 12uH 10% RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| 74F125D | 制造商:NXP Semiconductors 功能描述: 制造商:Freescale Semiconductor 功能描述:Driver/Buffer Device, Single, 4-Bit, 14 Pin, Plastic, SOP 制造商:North American Philips Discrete Products Div 功能描述:Driver/Buffer Device, Single, 4-Bit, 14 Pin, Plastic, SOP 制造商:NXP Semiconductors 功能描述:Driver/Buffer Device, Single, 4-Bit, 14 Pin, Plastic, SOP 制造商:Texas Instruments 功能描述:Driver/Buffer Device, Single, 4-Bit, 14 Pin, Plastic, SOP |
| 74F125D SIG9241 | 制造商:SIG 功能描述:74F125D S1I2C |
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