SN74BCT979 Datasheet, PDF (5/10 Pages) Texas Instruments – 9-BIT REGISTERED BTL TRANSCEIVER WITH PARITY GENERATOR/CHECKER

SN74BCT979
9ĆBIT REGISTERED BTL TRANSCEIVER
WITH PARITY GENERATOR/CHECKER
SCBS115A − OCTOBER 1990 − REVISED NOVEMBER 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^†
Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, V_I (see Note 1): B1−B8, BPAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 5.5 V
Other inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Voltage range applied to any output in the disabled or power-off state, V_O . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Voltage range applied to any output in the high state, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V_CC
Input clamp current, I_IK (V_I < 0) (A port) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA
Current into any output in the low state, I_O: A port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA
B port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Maximum power dissipation at T_A = 55°C (in still air) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.85 W
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 negative-voltage rating may be exceeded if the input clamp-current rating is observed.
recommended operating conditions (see Note 2)
VCC Supply voltage
VIH High-level input voltage
B1 −B8, BPAR
Other inputs
VIL Low-level input voltage
B1 −B8, BPAR
Other inputs
VOH
IIK
IOH
High-level output voltage
Input clamp current
High-level output current
IOL Low-level output current
B1 −B8, BPAR
AO1 −AO8, APARO, ERRA, ERRB
AO1 −AO8, APARO, ERRA, ERRB
B1 −B8, BPAR
∆t /∆v Input transition rise or fall rate
Outputs enabled
TA
Operating free-air temperature
NOTE 2: Unused or floating pins (input or I/O) must be held high or low.
MIN NOM MAX UNIT
4.5
5 5.5 V
1.6
V
2
1.47
V
0.8
2.1 mA
−18 mA
−3 mA
24
mA
100
10 ns / V
0
70 °C
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