MC74F2245 Datasheet, PDF (1/5 Pages) Motorola, Inc – 25ohm OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS AND OUTPUTS

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
25Ω Octal Bidirectional
Transceiver With 3-State
Inputs and Outputs
The MC74F2245 is designed for asynchronous communication
between data buses. The device transmits data from the A bus to the B
bus or from the B bus to the A bus depending upon the logic level at the
direction control (DIR) input. The output enable (OE) input disables the
device so the buses are effectively isolated.
Both A and B outputs can sink up to 12mA; 25Ω resistors are included
in the lower output circuit to reduce overshoot and undershoot.
The MC74F2245 is characterized for operation from 0°C to 70°C.
• 3–State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Package Options Include Plastic SOIC (DW–Suffix) and Plastic SSOP
(SD–Suffix)
CONNECTION DIAGRAM (TOP VIEW)
VCC OE B0 B1 B2 B3 B4 B5 B6 B7
20 19 18 17 16 15 14 13 12 11
MC74F2245
25Ω OCTAL BIDIRECTIONAL
TRANSCEIVER WITH 3–STATE
INPUTS AND OUTPUTS
FAST™ SCHOTTKY TTL
DW SUFFIX
PLASTIC SOIC
CASE 751D–04
1
2
T/R A0
3
4
A1 A2
5
6
7
8
9 10
A3 A4 A5 A6 A7 GND
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
TA
IOH
IOL
Supply Voltage
Operating Ambient Temperature Range
Output Current — High
Output Current — Low
Outputs
Outputs
SD SUFFIX*
PLASTIC SSOP
CASE 940C–03
*Thermal Mounting Techniques are
Recommended. Please refer to Motorola
Application Note AN1567/D.
Min
Typ
Max
Unit
4.5
5.0
5.5
V
0
25
70
°C
–3.0
mA
12
mA
2/96
© Motorola, Inc. 1996
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