|
Details, datasheet, quote on part number:SN74F2244DWR
| |
| Part: | SN74F2244DWR |
| Category: | Logic => Buffers/Drivers => Non-Inverting Buffers and Drivers |
| Description: | ti SN74F2244, 25-Ohm Octal Buffers/drivers With 3-State Outputs |
| Company: | Texas Instruments, Inc. |
| Datasheet: | Download SN74F2244DWR datasheet File size : 82 kB |
| Request For quote: | Find where to buy SN74F2244DWR
|
| |
Datasheet text preview:
SN74F2244 25- OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
SDFS095B NOVEMBER 1993 REVISED JANUARY 1996
D D
3-State Outputs Drive Bus Lines or Buffer-Memory Address Registers Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs
DW OR N PACKAGE (TOP VIEW)
description
This octal buffer and line driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The 25- resistors in the lower output circuit reduce ringing and eliminate the need for external resistors. The SN74F2244 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE (each buffer) INPUTS OE L L H A H L X OUTPUT Y H L Z
1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VC C 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
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.
Copyright © 1996, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
SN74F2244 25- OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
SDFS095B NOVEMBER 1993 REVISED JANUARY 1996
logic symbol
1OE 1 EN 18 16 14 12
logic diagram (positive logic)
1 1OE 2 18
1A1 1A2 1A3 1A4
2 4 6 8
1
1Y1 1Y2 1Y3 1Y4
1A1
1Y1
1A2
4
16
1Y2
1A3 2OE 19 EN
6
14 1Y3 12
8 2A1 2A2 2A3 2A4 11 13 15 17 1 9 7 5 3 1A4 2Y1 2Y2 2Y3 2Y4 2A1 11 2OE 19
1Y4
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
9
2Y1
2A2
13
7
2Y2
2A3
15
5
2Y3
2A4
17
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, II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA to 5 mA Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . 0.5 V to 5.5 V Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC Current into any output in the low state, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Operating free-air temperature range,TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 if the input current ratings are observed.
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN74F2244 25- OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
SDFS095B NOVEMBER 1993 REVISED JANUARY 1996
recommended operating conditions
MIN 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 0 4.5 2 0.8 18 15 12 70 NOM 5 MAX 5.5 UNIT V V V mA mA mA °C
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOH VCC = 4.5 V, VCC = 4.5 V, VCC = 4.5 V VCC = 4.75 V, VCC = 4.5 V, VCC = 4.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, Any OE input Any A input VCC = 5 5 V 5.5 V, VCC = 5.5 V, VCC = 5.5 V 5 5 V, Outputs open TEST CONDITIONS II = 18 mA IOH = 3 mA IOH = 15 mA IOH = 3 mA IOL = 1 mA IOL = 12 mA VI = 0.5 V VO = 7 V VO = 2.7 V VI = 2.7 V VI = 0 5 V 0.5 VO = 0 Outputs high Outputs low 100 40 60 MIN 2.4 2 2.7 0.2 0.5 0.5 0.75 0.1 50 50 20 1 1.6 225 60 90 90 mA V mA µA µA µA mA mA TYP 2.8 2.3 V MAX 1.2 UNIT V
VOL II IOZH IOZL IIH IIL IOS ICC
Outputs disabled 60 All typical values are at VCC = 5 V, TA = 25°C. Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
switching characteristics (see Figure 1)
VCC = 5 V, CL = 50 PF, R1 = 500 , R2 = 500 , TA = 25°C MIN tPLH tPHL tPZH tPZL tPHZ tPLZ A Y Y Y 1.5 2.5 1.5 2.5 1.5 1.5 MAX 7 8 9 11.5 9 8.5 VCC = 4.5 V TO 5.5 V, CL = 50 PF, R1 = 500 , R2 = 500 , TA = MIN TO MAX§ MIN 1.5 2 1 2.5 1 1.5 MAX 7 8 9.5 12 9.5 9.5 ns ns ns
PARAMETER
FROM (INPUT)
TO (OUTPUT)
UNIT
OE OE
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
|
|
