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CD74FCT623SM Datasheet

Download or read online TI (Texas Instruments) CD74FCT623SM FCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 pdf datasheet.



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BiCMOS Technology With Low Quiescent
Power
Buffered Inputs
Noninverted Outputs
Input/Output Isolation From V
Controlled Output Edge Rates
64-mA Output Sink Current
Output Voltage Swing Limited to 3.7 V
SCR Latch-Up-Resistant BiCMOS Process
and Circuit Design
Package Options Include Plastic
Small-Outline (M) and Shrink Small-Outline
(SM) Packages and Standard Plastic (E) DIP
description
The CD74FCT623 is an octal bus transceiver that uses a small-geometry BiCMOS technology. The output stage
is a combination of bipolar and CMOS transistors that limits the output high level to two diode drops below V
This resultant lowering of output swing (0 V to 3.7 V) reduces power-bus ringing [a source of electromagnetic
interference (EMI)] and minimizes V
switching. The output configuration also enhances switching speed and is capable of sinking 64 mA.
This device is a noninverting, 3-state, bidirectional transceiver-buffer intended for two-way transmission from
A bus to B bus or B bus to A bus, depending on the logic levels of the output-enable (OEAB, OEBA) inputs.
The dual output-enable provision gives these devices the capability to store data by simultaneously enabling
OEAB and OEBA. Each output reinforces its input under these conditions, and when all other data sources to
the bus lines are at high impedance, both sets of bus lines remain in their last states.
The CD74FCT623 is characterized for operation from 0 C to 70 C.
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.
PRODUCTION DATA information is 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.
BiCMOS OCTAL BUS TRANSCEIVER
OEAB
CC
bounce and ground bounce and their effects during simultaneous output
CC
FUNCTION TABLE
INPUTS
OPERATION
OPERATION
OEBA
OEAB
L
L
B data to A bus
H
H
A data to B bus
Isolation †
H
L
B data to A bus,
L
H
A data to B bus
† To prevent excess current in the
high-impedance (isolation) state, all I/O
terminals should be terminated with
10-k to 1-M resistors.
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
CD74FCT623
WITH 3-STATE OUTPUTS
SCBS736 – JULY 2000
E, M, OR SM PACKAGE
(TOP VIEW)
V
1
20
CC
A1
OEBA
2
19
A2
B1
3
18
A3
B2
4
17
A4
B3
5
16
A5
B4
6
15
A6
B5
7
14
A7
B6
8
13
A8
B7
9
12
GND
10
11
B8
CC
Copyright
2000, Texas Instruments Incorporated
.
1
Specifications of TI (Texas Instruments) CD74FCT623SM
Mfr Package Description:
PLASTIC, SSOP-20
Technology:
BICMOS
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, SHRINK PITCH
Surface Mount:
Yes
Terminal Form:
GULL WING
Terminal Pitch:
0.6500 mm
Terminal Position:
DUAL
Number of Functions:
1
Number of Terminals:
20
Package Body Material:
PLASTIC/EPOXY
Temperature Grade:
COMMERCIAL
Output Characteristics:
3-ST
Operating Temperature-Max:
70 Cel
Operating Temperature-Min:
0.0 Cel
Supply Voltage-Max (Vsup):
5.25 V
Supply Voltage-Min (Vsup):
4.75 V
Supply Voltage-Nom (Vsup):
5 V
Logic IC Type:
TRANSCEIVER
Number of Bits:
8
Number of Ports:
2
Output Polarity:
TRUE
Propagation Delay (tpd):
7 ns

Summary of Contents

Page 1

BiCMOS Technology With Low Quiescent Power Buffered Inputs Noninverted Outputs Input/Output Isolation From V Controlled Output Edge Rates 64-mA Output Sink Current Output Voltage Swing Limited to 3.7 V SCR Latch-Up-Resistant BiCMOS Process and Circuit Design Package Options Include Plastic ...

Page 2

CD74FCT623 BiCMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS SCBS736 JULY 2000 logic symbol OEBA OEAB This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic ...

Page 3

DC supply voltage range input clamp current < 0 output clamp current output sink current per ...

Page 4

CD74FCT623 BiCMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS SCBS736 JULY 2000 switching characteristics over recommended operating conditions (unless otherwise noted) (see Figure 1) PARAMETER PARAMETER dis t di noise characteristics ...

Page 5

PARAMETER MEASUREMENT INFORMATION From Output Test From Output Under Test Point Under Test 500 (see Note A) LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS 90% 90% 1 VOLTAGE WAVEFORM INPUT RISE AND FALL ...

Page 6

Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, ...

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