MC74AC652 Datasheet, PDF (1/8 Pages) Motorola, Inc – OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING)

Octal Transceiver/Register With
3ĆState Outputs (NonĆInverting)
The MC74AC/ACT652 consists of registered bus transceiver circuits, with
outputs, D-type flip-flops and control circuitry providing multiplexed transmission of
data directly from the input bus or from the internal storage registers. Data on the A
or B bus will be loaded into the respective registers on the LOW-to-HIGH transition
of the appropriate clock pin (CAB or CBA). The four fundamental data handling
functions available are illustrated in Figures 1 to 4.
• Independent Registers for A and B Buses
• Multiplexed Real-Time and Stored Data Transfers
• Choice of True and Inverting Data Paths
• 3-State Outputs
• 300 mil Slim Dual-in-Line Package
• Outputs Source/Sink 24 mA
• ′ACT652 Has TTL Compatible Inputs
REAL TIME TRANSFER
A-BUS TO B-BUS
REAL TIME TRANSFER
B-BUS TO A-BUS
A-BUS
A-BUS
REG
REG
REG
REG
B-BUS
Figure 1
STORAGE
FROM BUS TO REGISTER
A-BUS
B-BUS
Figure 2
TRANSFER
FROM REGISTER TO BUS
A-BUS
REG
REG
REG
REG
B-BUS
Figure 3
B-BUS
Figure 4
MC74AC652
MC74ACT652
OCTAL TRANSCEIVER/
REGISTER WITH 3-STATE
OUTPUTS (NON-INVERTING)
24
1
N SUFFIX
CASE 724-03
PLASTIC PACKAGE
24
1
DW SUFFIX
CASE 751E-04
SOIC PACKAGE
PIN NAMES
A0 – A7
B0 – B7
CAB, CBA
SAB, SBA
GAB, GBA
Data Register A Inputs
Data Register A Outputs
Data Register B Inputs
Data Register B Outputs
Clock Pulse Inputs
Transmit/Receive Inputs
Output Enable Inputs
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
Vin
Vout
Iin
Iout
ICC
Tstg
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC VCC or GND Current per Output Pin
Storage Temperature
–0.5 to +7.0
V
–0.5 to VCC + 0.5
V
–0.5 to VCC + 0.5
V
± 20
mA
± 50
mA
± 50
mA
–65 to +150
°C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
FACT DATA
5-1