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Details, datasheet, quote on part number:SN54F245FK
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Datasheet text preview:
SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SDFS010A MARCH 1987 REVISED OCTOBER 1993
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3-State Outputs Drive Bus Lines Directly Package Options Include Plastic Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs
SN54F245 . . . J PACKAGE SN74F245 . . . DB, DW, OR N PACKAGE (TOP VIEW)
description
These octal bus transceivers are designed for asynchronous communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction-control (DIR) input. The output enable (OE) input can be used to disable the device so the buses are effectively isolated. The SN74F245 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54F245 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74F245 is characterized for operation from 0°C to 70°C.
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VC C OE B1 B2 B3 B4 B5 B6 B7 B8
SN54F245 . . . FK PACKAGE (TOP VIEW)
A2 A1 DIR VCC
A3 A4 A5 A6 A7
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
OE B1 B2 B3 B4 B5
FUNCTION TABLE INPUTS OE L L H DIR L H X OPERATION B data to A bus A data to B bus Isolation
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 © 1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
A8 GND B8 B7 B6
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SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SDFS010A MARCH 1987 REVISED OCTOBER 1993
logic symbol
OE DIR 19 1 G3 3EN1[BA] 3EN2[AB] 1 2 A2 A3 A4 A5 A6 A7 A8 3 4 5 6 7 8 9 17 16 15 14 13 12 11 B2 B3 B4 B5 B6 B7 B8 18 B1
logic diagram (positive logic)
DIR 1 19
OE
A1
2
A1
2
18
B1
To Seven Other Channels
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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 (except I/O ports) (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: SN54F245 (A1 thru A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA SN54F245 (B1 thru B8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74F245 (A1 thru A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA SN74F245 (B1 thru B8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Operating free-air temperature range: SN54F245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C SN74F245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SDFS010A MARCH 1987 REVISED OCTOBER 1993
recommended operating conditions
SN54F245 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 output current Low-level output current output current Operating free-air temperature A1 thru A8 B1 thru B8 A1 thru A8 B1 thru B8 55 4.5 2 0.8 18 3 12 20 48 125 0 NOM 5 MAX 5.5 SN74F245 MIN 4.5 2 0.8 18 3 15 24 64 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 A1 thru A8 thru A8 VOH B1 thru B8 thru B8 Any output A1 thru A8 thru A8 VOL B1 thru B8 thru B8 II IIH IIL IOS§ A and B DIR, OE A and B DIR, OE A and B DIR, OE A1 thru A8 B1 thru B8 VCC = 4 5 V 4.5 VCC = 5 5 V 5.5 VCC = 5 5 V 5.5 V, VCC = 5 5 V 5.5 V, VCC = 5 5 V 5.5 V, VCC = 4.5 V, VCC = 4 5 V 4.5 VCC = 4 5 V 4.5 VCC = 4.75 V, VCC = 4 5 V 4.5 TEST CONDITIONS CONDITIONS II = 18 mA IOH = 1 mA IOH = 3 mA IOH = 12 mA IOH = 15 mA IOH = 1 mA to 3 mA IOL = 20 mA IOL = 24 mA IOL = 48 mA IOL = 64 mA VI = 5.5 V VI = 7 V VI = 2 7 V 2.7 VI = 0 5 V 0.5 VO = 0 Outputs high ICC VCC = 5.5 V Outputs low 60 100 70 95 0.3 0.38 0.5 0.35 0.55 0.42 1 0.1 70 20 0.65 1.2 150 225 90 120 60 100 70 95 0.55 1 0.1 70 20 0.65 1.2 150 225 90 120 110 mA mA µA mA mA 0.5 V MIN SN54F245 TYP MAX 1.2 2.5 2.4 2 3.4 3.3 3.2 2 2.7 3.1 2.5 2.4 3.4 3.3 V MIN SN74F245 TYP MAX 1.2 UNIT V
Outputs disabled 85 110 85 All typical values are at VCC = 5 V, TA = 25°C. For I/O ports, the parameters IIH and IIL include the off-state output current. § Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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