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Partno	Mfg	Dc	Qty	Available	Descript
74ACT8244TTR	ST	N/a	919	avai	RELAY DRIVER IC

74ACT8244TTR ,RELAY DRIVER IC74ACT8244RELAY DRIVER IC ■ OPERATES 4 LATCHES RELAIS, 1 SINGLE SIDE STABLE RELAY AND 1 LED■ VERY L ..
74ACT825 ,8-Bit D-Type Flip-Flopfeatures which are ideal for parity bus

74ACT8244TTR
RELAY DRIVER IC
1/7June 2001 OPERATES 4 LATCHES RELAIS, 1 SINGLE
SIDE STABLE RELAY AND 1 LED VERY LOW POWER CONSUMPTION TTL COMPATIBLE INPUT THRESHOLDS IMPROVED LATCH-UP IMMUNITY UP TO
300mA
� OPERATING VOLTAGE RANGE:CC (OPR) = 4.25V to 5.25V AVAILABLE IN TSSOP-20 PACKAGE
DESCRIPTION
The device is a relais driver for line card
application. It is able to operate four latching
relais, one single side stable relay and one LED
connected either to GND or VCC. All the outputs
can be set to LOW with the RST input as shown in
the true table. All inputs and outputs are equipped
with protection circuits against static discharge,
giving them 2KV ESD immunity and transient
excess voltage.
PIN DESCRIPTION
74ACT8244
RELAY DRIVER IC
ORDER CODES
PIN CONNECTION
74ACT8244
2/7
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
RECOMMENDED OPERATING CONDITIONS
1) VIN from 0.8V to 2.0V
74ACT8244
3/7
DC SPECIFICATIONS
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)
TRUTH TABLE FOR LATCHING RELAY
DRIVER
Z : High Impedance
X : Don’t Care
n : 1,2,3
TRUTH TABLE FOR SINGLE SIDE RELAY
TRUTH TABLE FOR LED DRIVER
74ACT8244
4/7
OUTPUT CIRCUIT FOR LATCHING RELAY DRIVER
OUTPUT CIRCUIT FOR SINGLE SIDE RELAY OUTPUT CIRCUIT FOR LED DRIVER
74ACT8244
5/7
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C)
Figure 1 : Output Characteristics of a Double
Relay Driver N-channel with All Output Loaded
Figure 2 : Output Characteristics of a Single Side
Relay or Led Driver N-channel with All Output
Loaded
Figure 3 : Output Characteristics of a Double
Relay Driver P-channel with All Output Loaded
Figure 4 : Output Characteristics of a Single Side
Relay or Led Driver P-channel with All Output
Loaded

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