Document
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs
description
These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Taken together with the ′F240 and ′F244, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical OE (active-low output-enable) inputs, and complementary OE and OE inputs.
The SN54F241 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74F241 is characterized for operation from 0°C to 70°C.
SN54F241, SN74F241 OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS090 – MARCH 1987 – REVISED OCTOBER 1993
SN54F241 . . . J PACKAGE SN74F241 . . . DW OR N PACKAGE
(TOP VIEW)
1OE 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10
20 VCC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1
SN54F241 . . . FK PACKAGE (TOP VIEW)
2Y4 1A1 1OE VCC 2OE
1A2
3 2 1 20 19
4
18
1Y1
2Y3 5
17 2A4
1A3 6
16 1Y2
2Y2 7
15 2A3
1A4 8
14 1Y3
9 10 11 12 13
2Y1 GND 2A1 1Y4 2A2
FUNCTION TABLES
INPUTS 1OE 1A
OUTPUT 1Y
H
X
Z
L
H
H
L
L
L
INPUTS
2OE 2A
H
H
H
L
L
X
OUTPUT 2Y
H L Z
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1993, Texas Instruments Incorporated 2–1
SN54F241, SN74F241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SDFS090 – MARCH 1987 – REVISED OCTOBER 1993
logic symbol†
logic diagram (positive logic)
1
1OE
EN
1 1OE
2 1A1
4 1A2
6 1A3
8 1A4
18 1Y1
16 1Y2
14 1Y3
12 1Y4
19
2OE
EN
11 2A1
13 2A2
15 2A3
17 2A4
9 2Y1
7 2Y2
5 2Y3
3 2Y4
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
2 1A1
1A2 4 6
1A3 8
1A4
19 2OE
11 2A1
13 2A2
15 2A3
18 1Y1
16 1Y2
14 1Y3
12 1Y4
9 2Y1
7 2Y2
5 2Y3
17 2A4
3 2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1.2 V to 7 V Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 mA to 5 mA Voltage range applied to any output in the disabled or power-off state . . . . . . . . . . . . . . . . . . . – 0.5 V to 5.5 V Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC Current into any output in the low state: SN54F241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74F241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Operating free-air temperature range: SN54F241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74F241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
2–2
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
recommended operating conditions
VCC VIH VIL IIK IOH IOL TA
Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature
SN54F241, SN74F241
OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SDFS090 – MARCH 1987 – REVISED OCTOBER 1993
SN54F241
MIN NOM MAX
4.5
5 5.5
2
0.8
– 18
– 12
48
– 55
125
SN74F241
MIN NOM MAX
4.5
5 5.5
2
0.8
– 18
– 15
64
0
70
UNIT
V V V mA mA mA °C
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F241 MIN TYP† MAX
SN74F241 MIN TYP† MAX
VIK
VCC = 4.5 V,
VOH
VOL I.