CY74FCT2541T Datasheet, PDF (1/6 Pages) Texas Instruments – 8-Bit Buffer/Line Driver

Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT2541T
SCCS041 - September 1994 - Revised March 2000
8-Bit Buffer/Line Driver
Features
• Function and pinout compatible with FCT and F logic
• FCT-C speed at 4.1 ns max.
FCT-A speed at 4.8 ns max.
• 25Ω output series to reduce transmission line reflection
noise
• Reduced V_OH (typically = 3.3V) versions of equivalent
FCT functions
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-off disable feature
• ESD > 2000V
• Matched rise and fall times
• Fully compatible with TTL input and output logic levels
• Sink current
12 mA
Source current 15 mA
• Extended commercial temp. range of –40˚C to +85˚C
• Three-state outputs
Functional Description
The FCT2541T 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
have been added to the outputs to reduce system noise caused by
reflections. The FCT2541T can be used to replace the FCT541T to
reduce noise in an existing design. The speed of the FCT2541T is
comparable to bipolar logic counterparts while reducing power dis-
sipation. The input and output voltage levels allow direct interface
with TTL and CMOS devices without external components.
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
Logic Block Diagram
OE_A
OE_B
D₀
O₀
D₁
O₁
D₂
O₂
D₃
O₃
D₄
O₄
D₅
O₅
D₆
O₆
D₇
O₇
FCT2541T–3
Pin Configurations
SOIC/QSOP
Top View
OE_A 1
D₀ 2
D₁ 3
D₂ 4
D₃ 5
D₄ 6
D₅ 7
D₆ 8
D₇ 9
GND 10
20 VCC
19
OE _B
18
O₀
17
O₁
16
O₂
15
O₃
14
O₄
13
O₅
12
O₆
11
O₇
FCT2541T–2
]
Function Table^[1]
Inputs
OE_A
OE_B
D
L
L
L
L
L
H
H
H
X
Note:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
Output
L
H
Z
Copyright © 2000, Texas Instruments Incorporated