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74F1245 반도체 회로 부품 판매점

Octal transceiver 3-State



NXP Semiconductors 로고
NXP Semiconductors
74F1245 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
74F1245
Octal transceiver (3-State)
Product specification
IC15 Data Handbook
Philips Semiconductors
1995 Mar 01


74F1245 데이터시트, 핀배열, 회로
Philips Semiconductors
Octal transceiver (3-State)
Product specification
74F1245
FEATURES
Same function and pinout as 74F245
High impedance NPN base inputs for reduced loading (70µA 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
74F1245
TYPICAL
PROPAGATION
DELAY
5.0ns
TYPICAL SUPPLY
CURRENT (TOTAL)
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
VCC = 5V ±10%,
Tamb = 0°C to +70°C
20-Pin Plastic DIP
N74F1245N
20-Pin Plastic SOL
N74F1245D
DRAWING
NUMBER
SOT146-1
SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
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
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOAD VALUE HIGH/LOW
70µA/70µA
40µA/20µA
40µA/20µA
3.0mA/24mA
15mA/64mA
PIN CONFIGURATION
T/R 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 VCC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
SF00198
LOGIC SYMBOL
234567 89
A0 A1 A2 A3 A4 A5 A6 A7
19 OE
1 T/R
B0 B1 B2 B3 B4 B5 B6 B7
VCC = Pin 20
GND = Pin 10
18 17 16 15 14 13 12 11
SF00199
1995 Mar 01
2 853-0885 14921




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74F1245 transceiver

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