SN54HCT652_15 Datasheet, PDF (1/13 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

D Operating Voltage Range of 4.5 V to 5.5 V
D Low Power Consumption, 80-µA Max I_CC
D Typical t_pd = 12 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Inputs Are TTL-Voltage Compatible
SN54HCT652 . . . JT OR W PACKAGE
SN74HCT652 . . . DW OR NT PACKAGE
(TOP VIEW)
CLKAB 1
SAB 2
OEAB 3
A1 4
A2 5
A3 6
A4 7
A5 8
A6 9
A7 10
A8 11
GND 12
24 V_CC
23 CLKBA
22 SBA
21 OEBA
20 B1
19 B2
18 B3
17 B4
16 B5
15 B6
14 B7
13 B8
SN54HCT652, SN74HCT652
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCLS179D – MARCH 1984 – REVISED MARCH 2003
D Independent Registers and Enables for
A and B Buses
D Multiplexed Real-Time and Stored Data
D True Data Paths
D High-Current 3-State Outputs Can Drive Up
To 15 LSTTL Loads
SN54HCT652 . . . FK PACKAGE
(TOP VIEW)
4 3 2 1 28 27 26
A1 ⁵
25 OEBA
A2 ⁶
24 B1
A3 7
23 B2
NC 8
22 NC
A4 9
21 B3
A5 10
20 B4
A6 11
19 B5
12 13 14 15 16 17 18
description/ordering information
NC – No internal connection
The ’HCT652 devices consist of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for
multiplexed transmission of data directly from the data bus or from the internal storage registers. Output-enable
(OEAB and OEBA) inputs are provided to control the transceiver functions. Select-control (SAB and SBA) inputs
are provided to select real-time or stored data transfer. A low input level selects real-time data; a high input level
selects stored data. Figure 1 illustrates the four fundamental bus-management functions that can be performed
with these devices.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – NT
Tube
SN74HCT652NT
SN74HCT652NT
–40°C to 85°C
SOIC – DW
Tube
Tape and reel
SN74HCT652DW
SN74HCT652DWR
HCT652
CDIP – JT
–55°C to 125°C CFP – W
Tube
Tube
SNJ54HCT652JT
SNJ54HCT652W
SNJ54HCT652JT
SNJ54HCT652W
LCCC – FK
Tube
SNJ54HCT652FK
SNJ54HCT652FK
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines}
are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
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Copyright  2003, Texas Instruments Incorporated
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