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CD74FCT374SME4 Datasheet

Download or read online TI (Texas Instruments) CD74FCT374SME4 FCT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 pdf datasheet.



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BiCMOS Technology With Low Quiescent
Power
3-State Outputs Drive Bus Lines Directly
Buffered Inputs
Noninverted Outputs
Input/Output Isolation From V
Controlled Output Edge Rates
48-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 CD74FCT374 is an octal, edge-triggered, D-type flip-flop that uses a small-geometry BiCMOS technology
and features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance
loads. This device is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers,
and working registers.
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
CC
of electromagnetic interference (EMI)] and minimizes V
simultaneous output switching. The output configuration also enhances switching speed and is capable of
sinking 48 mA.
The eight flip-flops enter data into their registers on the low-to-high transition of the clock (CLK). The
output-enable (OE) input controls the 3-state outputs and is independent of the register operation. When OE
is high, the outputs are in the high-impedance state.
A buffered OE input can be used to place the eight outputs in either a normal logic state (high or low) or the
high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly.
The high-impedance state and the increased drive provide the capability to drive bus lines without interface or
pullup components.
OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while
the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to V
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The CD74FCT374 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 EDGE-TRIGGERED D-TYPE FLIP-FLOP
CC
bounce and ground bounce and their effects during
CC
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
CD74FCT374
WITH 3-STATE OUTPUTS
SCBS739 – JULY 2000
E, M, OR SM PACKAGE
(TOP VIEW)
OE
V
1
20
CC
1Q
8Q
2
19
1D
8D
3
18
2D
7D
4
17
2Q
7Q
5
16
3Q
6Q
6
15
3D
7
14
6D
4D
8
13
5D
4Q
9
12
5Q
GND
10
11
CLK
through a pullup
CC
Copyright
2000, Texas Instruments Incorporated
1
Specifications of TI (Texas Instruments) CD74FCT374SME4
Mfr Package Description:
GREEN, PLASTIC, SSOP-20
Lead Free:
Yes
EU RoHS Compliant:
Yes
China RoHS Compliant:
Yes
Technology:
BICMOS
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, SHRINK PITCH
Surface Mount:
Yes
Terminal Form:
GULL WING
Terminal Pitch:
0.6500 mm
Terminal Finish:
NICKEL PALLADIUM GOLD
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:
DRIVER
Number of Bits:
8
Number of Ports:
2
Output Polarity:
TRUE
Propagation Delay (tpd):
10 ns

Summary of Contents

Page 1

BiCMOS Technology With Low Quiescent Power 3-State Outputs Drive Bus Lines Directly Buffered Inputs Noninverted Outputs Input/Output Isolation From V Controlled Output Edge Rates 48-mA Output Sink Current Output Voltage Swing Limited to 3.7 V SCR Latch-Up-Resistant BiCMOS Process and ...

Page 2

CD74FCT374 BiCMOS OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS SCBS739 JULY 2000 logic symbol OE CLK This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. ...

Page 3

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

Page 4

CD74FCT374 BiCMOS OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS SCBS739 JULY 2000 timing requirements over recommended operating conditions, (unless otherwise noted) (see Figure 1) f clock Clock frequency t w Pulse duration t su Setup time t h Hold ...

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

PACKAGING INFORMATION (1) Orderable Device Status CD74FCT374E ACTIVE CD74FCT374EE4 ACTIVE CD74FCT374M ACTIVE CD74FCT374M96 ACTIVE CD74FCT374M96E4 ACTIVE CD74FCT374M96G4 ACTIVE CD74FCT374ME4 ACTIVE CD74FCT374MG4 ACTIVE CD74FCT374SM OBSOLETE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new ...

Page 7

TAPE AND REEL INFORMATION All dimensions are nominal Device Package Package Type Drawing CD74FCT374M96 SOIC DW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 20 2000 330.0 24.4 10.8 Pack Materials-Page 1 11-Mar-2008 ...

Page 8

Device Package Type CD74FCT374M96 SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2000 Pack Materials-Page 2 11-Mar-2008 Width (mm) Height (mm) 346.0 346.0 41.0 ...

Page 9

DB (R-PDSO-G) 28 PINS SHOWN 0, 2,00 MAX PINS DIM A MAX A MIN NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not ...

Page 12

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...

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