CD74FCT540 Datasheet, PDF (1/7 Pages) Texas Instruments – BiCMOS FCT Interface Logic, Octal Buffers/Line Drivers, Three-State

Data sheet acquired from Harris Semiconductor
SCHS257
January 1997
Features
• Buffered Inputs
NOFO_U^T_sRRe ^E_CNCMEO^OW_S^MD_T^M_e^E_c^E_h^SN_n^I_o^GD_lo^NE_g^SD_y
•
Typical Propagation Delay:
T_A = 25^oC, C_L = 50pF
6.4ns
at
V_CC
=
5V,
• CD74FCT540
- Inverting
• CD74FCT541
- Noninverting
• SCR Latchup Resistant BiCMOS Process and
Circuit Design
• Speed of Bipolar FAST™/AS/S
• 64mA Output Sink Current
• Output Voltage Swing Limited to 3.7V at V_CC = 5V
• Controlled Output Edge Rates
• Input/Output Isolation to V_CC
• BiCMOS Technology with Low Quiescent Power
Pinouts
CD74FCT540
(PDIP, SOIC)
TOP VIEW
CD74FCT540,
CD74FCT541
BiCMOS FCT Interface Logic,
Octal Buffers/Line Drivers, Three-State
Description
The CD74FCT540 and CD74FCT541 octal buffers/line drivers
use 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_CC. This resultant lowering of output swing (0V to 3.7V)
reduces power bus ringing (a source of EMI) and minimizes
V_CC bounce and ground bounce and their effects during
simultaneous output switching. The output configuration
also enhances switching speed and is capable of sinking
64 milliamperes.
The CD74FCT540 is a three-state buffer having two active
LOW output enables. The CD74FCT541 is a noninverting
three state buffer having two active LOW output enables.
Ordering Information
PART NUMBER
TEMP.
RANGE (^oC) PACKAGE
PKG.
NO.
CD74FCT540E
0 to 70 20 Ld PDIP E20.3
CD74FCT541E
0 to 70 20 Ld PDIP E20.3
CD74FCT540M
0 to 70 20 Ld SOIC M20.3
CD74FCT541M
0 to 70 20 Ld SOIC M20.3
CD74FCT541SM
0 to 70 20 Ld SSOP M20.209
NOTE: When ordering the suffix M and SM packages, use the entire
part number. Add the suffix 96 to obtain the variant in the tape and reel.
CD74FCT541
(PDIP, SOIC, SSOP)
TOP VIEW
OE1 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 V_CC
19 OE2
18 Y0
17 Y1
16 Y2
15 Y3
14 Y4
13 Y5
12 Y6
11 Y7
OE1 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 V_CC
19 OE2
18 Y0
17 Y1
16 Y2
15 Y3
14 Y4
13 Y5
12 Y6
11 Y7
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a trademark of Fairchild Semiconductor.
Copyright © Harris Corporation 1997
8-1
File Number 2383.2