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74ALS245A 반도체 회로 부품 판매점

Octal transceiver 3-State



NXP Semiconductors 로고
NXP Semiconductors
74ALS245A 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
74ALS245A/74ALS245A–1
Octal transceiver (3–State)
Product specification
IC05 Data Handbook
1991 Jun 03
Philips
Semiconductors


74ALS245A 데이터시트, 핀배열, 회로
Philips Semiconductors
Octal transceiver (3-State)
Product specification
74ALS245A/74ALS245A-1
FEATURES
Octal bidirectional bus interface
3-State buffer outputs sink 24mA and source 15mA
Outputs are placed in high impedance state during power-off
conditions
The -1 version sinks 48mA
DESCRIPTION
The 74ALS245A is an octal transceiver featuring non-inverting
3-State bus compatible outputs in both transmit and receive
directions. The device features an output enable (OE) input for easy
cascading and transmit/receive (R/T) input for direction control.
The 74ALS245A-1 is the same as the 74ALS245A except that both
ports sink 48mA within the ±5% VCC range.
TYPE
74ALS245A
74ALS245A-1
TYPICAL
PROPAGATION
DELAY
7.0ns
7.0ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
34mA
34mA
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
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
20-pin plastic DIP
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
74ALS245AN,
74ALS245A-1N
20-pin plastic SOL
74ALS245AD,
744ALS245A-1D
20-pin plastic SSOP
Type II
74ALS245ADB,
74ALS245A-1DB
DRAWING
NUMBER
SOT146-1
SOT163-1
SOT339-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
A0 – A7, B0 – B7
Data inputs
1.0/1.0
OE Output Enable input (active-Low)
1.0/1.0
T/R Transmit/receive input
1.0/1.0
A0 – A7
A port outputs
750/240
B0 – B7
B port outputs
750/240
A0 – A7
A port outputs (-1 version)
750/480
B0 – B7
B port outputs (-1 version)
750/480
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOAD VALUE
HIGH/LOW
20µA/0.1mA
20µA/0.1mA
20µA/0.1mA
15mA/24mA
15mA/24mA
15mA/48mA
15mA/48mA
1991 Jun 03
2 853–0011 02709




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74ALS245A transceiver

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