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PDF 74ACT245 Data sheet ( Hoja de datos )
| Número de pieza | 74ACT245 | |
| Descripción | Octal Bidirectional Transceiver | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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January 2008
74AC245, 74ACT245
Octal Bidirectional Transceiver with 3-STATE
Inputs/Outputs
Features
■ ICC and IOZ reduced by 50%
■ Non-inverting buffers
■ Bidirectional data path
■ A and B outputs source/sink 24mA
■ ACT245 has TTL-compatible inputs
General Description
The AC/ACT245 contains eight non-inverting bidirec-
tional buffers with 3-STATE outputs and is intended for
bus-oriented applications. Current sinking capability is
24mA at both the A and B ports. The Transmit/Receive
(T/R) input determines the direction of data flow through
the bidirectional transceiver. Transmit (active-HIGH)
enables data from A ports to B ports; Receive (active-
LOW) enables data from B ports to A ports. The Output
Enable input, when HIGH, disables both A and B ports
by placing them in a HIGH Z condition.
Ordering Information
Order Number
Package
Number
Package Description
74AC245SC
74AC245SJ
74AC245MTC
74AC245PC
74ACT245SC
74ACT245SJ
74ACT245MSA
74ACT245MTC
74ACT245PC
M20B
M20D
MTC20
N20A
M20B
M20D
MSA20
MTC20
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,
4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,
4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1988 Fairchild Semiconductor Corporation
74AC245, 74ACT245 Rev. 1.5.0
www.fairchildsemi.com
1 page  
DC Electrical Characteristics for ACT
Symbol
VIH
Parameter
Minimum HIGH Level
Input Voltage
VCC (V)
4.5
5.5
Conditions
VOUT = 0.1V or
VCC − 0.1V
TA = +25°C TA = −40°C to +85°C
Typ. Guaranteed Limits
1.5 2.0
2.0
1.5 2.0
2.0
VIL Maximum LOW
Level Input Voltage
4.5 VOUT = 0.1V or
5.5 VCC − 0.1V
1.5 0.8
1.5 0.8
0.8
0.8
VOH Minimum HIGH Level
Output Voltage
4.5 IOUT = −50µA
5.5
4.49 4.4
5.49 5.4
4.4
5.4
VOL Maximum LOW
Level Output Voltage
4.5 VIN = VIL or VIH,
IOH = −24mA
5.5 VIN = VIL or VIH,
IOH = −24mA(4)
4.5 IOUT = 50µA
5.5
3.86
4.86
0.001
0.001
0.1
0.1
3.76
4.76
0.1
0.1
IIN Maximum Input
Leakage Current
4.5 VIN = VIL or VIH,
IOL = 24mA
5.5 VIN = VIL or VIH,
IOL = 24mA(4)
5.5 VI = VCC, GND
0.36 0.44
0.36 0.44
±0.1 ±1.0
ICCT
IOLD
IOHD
ICC
Maximum ICC/Input
Minimum Dynamic
Output Current(5)
Maximum Quiescent
Supply Current
5.5 VI = VCC − 2.1V
0.6
5.5 VOLD = 1.65V Max.
5.5 VOHD = 3.85V Min.
5.5 VIN = VCC or GND
4.0
1.5
75
−75
40.0
IOZT Maximum I/O
Leakage Current
5.5 VI (OE) = VIL, VIH;
VI = VCC, GND;
VO = VCC, GND
±0.3
±3.0
Notes:
4. All outputs loaded; thresholds on input associated with output under test.
5. Maximum test duration 2.0ms, one output loaded at a time.
Units
V
V
V
V
µA
mA
mA
mA
µA
µA
©1988 Fairchild Semiconductor Corporation
74AC245, 74ACT245 Rev. 1.5.0
5
www.fairchildsemi.com
5 Page 
Physical Dimensions (Continued)
Figure 5. 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©1988 Fairchild Semiconductor Corporation
74AC245, 74ACT245 Rev. 1.5.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 74ACT245.PDF ] | |
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