HD74AC245 Datasheet, PDF (2/9 Pages) Hitachi Semiconductor – Octal Bidirectional Transceiver with 3-State Input/Output

HD74AC245/HD74ACT245
Pin Names
OE
T/R
A₀ to A₇
B₀ to B₇
Output Enable Input
Transmit/Receive Input
Side A 3-State Inputs or 3-State Outputs
Side B 3-State Inputs or 3-State Outputs
Pin Arrangement
T/R 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
(Top view)
20 VCC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
Truth Tables
Inputs
OE
L
L
L
H
H
X
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
Absolute Maximum Ratings
Item
Supply voltage
DC input diode current
DC input voltage
DC output diode current
DC output voltage
DC output source or sink current
DC V_CC or ground current per output pin
Storage temperature
T/R
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
Symbol
V_CC
I_IK
V_I
I_OK
V_O
I_O
I_CC, I_GND
Tstg
Ratings
–0.5 to 7
–20
20
–0.5 to Vcc+0.5
–50
50
–0.5 to Vcc+0.5
±50
±50
–65 to +150
Unit
V
mA
mA
V
mA
mA
V
mA
mA
°C
Condition
V_I = –0.5V
V_I = Vcc+0.5V
V_O = –0.5V
V_O = Vcc+0.5V
Rev.2.00, Jul.16.2004, page 2 of 8