Datasheet


  
  
SCCS041B – SEPTEMBER 1994 – REVISED SEPTEMBER 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Function and Pinout Compatible With FCT
and F Logic
D 25-Ω Output Series Resistors to Reduce
Transmission-Line Reflection Noise
D Reduced V
OH
(Typically = 3.3 V) Versions
of Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D I
off
Supports Partial-Power-Down Mode
Operation
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D Matched Rise and Fall Times
D Fully Compatible With TTL Input and
Output Logic Levels
D 12-mA Output Sink Current
15-mA Output Source Current
D 3-State Outputs
description
The CY74FCT2541T is an octal buffer and line driver designed to be employed as a memory-address driver,
clock driver, and bus-oriented transmitter/receiver. On-chip termination resistors at the outputs reduce system noise
caused by reflections. The CY74FCT2541T can replace the CY74FCT541T to reduce noise in an existing design.
The speed of the CY74FCT2541T is comparable to bipolar logic counterparts, while reducing power dissipation.
Input and output voltage levels allow direct interface with TTL and CMOS devices without external components.
This device is fully specified for partial-power-down applications using I
off
. The I
off
circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION
T
A
PACKAGE
†
SPEED
(ns)
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QSOP – Q Tape and reel 4.1 CY74FCT2541CTQCT FCT2541C
SOIC SO
Tube 4.1 CY74FCT2541CTSOC
FCT2541C
SOIC – SO
Tape and reel 4.1 CY74FCT2541CTSOCT
FCT2541C
QSOP – Q Tape and reel 4.8 CY74FCT2541ATQCT FCT2541A
–40°C to 85°C
SOIC SO
Tube 4.8 CY74FCT2541ATSOC
FCT2541A
40 C
to
85 C
SOIC – SO
Tape and reel 4.8 CY74FCT2541ATSOCT
FCT2541A
QSOP – Q Tape and reel 8 CY74FCT2541TQCT FCT2541
SOIC SO
Tube 8 CY74FCT2541TSOC
FCT2541
SOIC – SO
Tape and reel 8 CY74FCT2541TSOCT
FCT2541
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright  2001, Texas Instruments Incorporated
        
         
       
   
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.
Q OR SO PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
A
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
GND
V
CC
OE
B
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7