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74FCT621ATSOG

P1-P3P4-P6
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT621T/AT
FAST CMOS OCTAL BUS TRANSCEIVER (OPEN DRAIN)
1
NOVEMBER 2016INDUSTRIAL TEMPERATURE RANGE
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
© 2016 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. DSC-2538/13
FEATURES:
• Std. and A grades
• Low input and output leakage
≤≤
≤≤
≤1µA (max.)
• CMOS power levels
• True TTL input and output compatibility:
–VOH = 3.3V (typ.)
–VOL = 0.3V (typ.)
• Meets or exceeds JEDEC standard 18 specifications
• Power off disable outputs permit "live insertion"
• Available in SOIC package
FUNCTIONAL BLOCK DIAGRAM
IDT74FCT621T/AT
FAST CMOS
OCTAL BUS TRANSCEIVER
(OPEN DRAIN)
DESCRIPTION:
The IDT74FCT621T is an octal transceiver with non-inverting Open-
Drain bus compatible outputs in both send and receive directions. The B
bus outputs are capable of sinking 64mA providing very good capacitive
drive characteristics. These octal bus transceivers are designed for
asynchronous two-way communication between data buses. The control
function implementation allows for maximum flexibility in timing.
GBA
GAB
A
1
B
1
A
2
-A
8
B
2
-B
8
SEVEN OTHER TRANSCEIVERS
218
19
1
INDUSTRIAL TEMPERATURE RANGE
2
IDT74FCT621T/AT
FAST CMOS OCTAL BUS TRANSCEIVER (OPEN DRAIN)
PIN CONFIGURATION
Symbol Description Max Unit
VTERM
(2)
Terminal Voltage with Respect to GND –0.5 to +7 V
VTERM
(3)
Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
TSTG Storage Temperature –65 to +150 °C
I
OUT DC Output Current –60 to +120 mA
ABSOLUTE MAXIMUM RATINGS
(1)
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage may exceed
Vcc by +0.5V unless otherwise noted.
2. Inputs and Vcc terminals only.
3. Output and I/O terminals only.
Symbol Parameter
(1)
Conditions Typ. Max. Unit
CIN Input Capacitance VIN = 0V 6 10 pF
C
OUT Output Capacitance VOUT = 0V 8 12 pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
SOIC
TOP VIEW
2
3
1
16
15
14
11
19
18
20
17
13
12
5
6
7
4
8
9
10
A
2
A
1
V
CC
A
3
A
6
A
4
A
5
A
7
GND
GBA
B
2
B
8
B
1
B
3
B
6
B
4
B
5
B
7
GAB
A
8
PIN DESCRIPTION
Pin Names Description
GBA, GAB Enable Inputs
A
1 – A8 A Inputs or Open-drain Outputs
B
1 – B8 B Inputs or Open-drain Outputs
FUNCTION TABLE
(1)
Enable Inputs
GBA GAB Function
L L B data to A bus
H H A data to B bus
H L OFF
L H B data to A bus
A data to B bus
NOTE:
1. H = HIGH Voltage Level.
L = LOW Voltage Level.
OFF = HIGH if pull-up resistor is connected to Open-Drain output.
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT621T/AT
FAST CMOS OCTAL BUS TRANSCEIVER (OPEN DRAIN)
3
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
Symbol Parameter Test Conditions
(1)
Min. Typ.
(2)
Max. Unit
VIH Input HIGH Level Guaranteed Logic HIGH Level 2 — — V
VIL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V
IIH Input HIGH Current
(4)
VCC = Max., VI = 2.7V — — ±1 µA
IIL Input LOW Current
(4)
VCC = Max., VI = 0.5V — — ±1 µA
II Input HIGH Current
(4)
VCC = Max., VI = VCC (Max.) — — ±1 µA
VIK Clamp Diode Voltage VCC = Min., IN= –18mA — –0.7 –1.2 V
I
OH Output HIGH Current VCC = Max. VOH = Vcc (Max.) — — 20 µA
VIN = VIH or VIL
VOL Output LOW Voltage VCC = Min. IOL = 64mA
(3)
— 0.3 0.55 V
(B Bus) VIN = VIH or VIL
VOL Output LOW Voltage VCC = Min. IOL = 48mA
(3)
— 0.3 0.5 V
(A Bus) VIN = VIH or VIL
IOFF Input/Output Power Off VCC = 0V, VIN or VO - 4.5V — — ±1 µA
Leakage
(4)
VH Input Hysteresis — — 200 — mV
I
CC Quiescent Power Supply VCC = max., VIN = GND or Vcc — 0.01 1 mA
Current
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. These are maximum IOL values per output, for 8 outputs turned on simultaneously. Total maximum IOL (all outputs) is 512mA for commercial and 384mA for military. Derate
IOL for number of outputs exceeding 8 turned on simultaneously.
4. The test limit for this parameter is ±5µA at TA = –55°C.
P1-P3P4-P6

74FCT621ATSOG

Mfr. #:
Buy 74FCT621ATSOG
Manufacturer:
IDT
Description:
Bus Transceivers OCTAL BUS TRANS OPEN COLL
Lifecycle:
New from this manufacturer.
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