SN74BCT29854 Datasheet, PDF (4/7 Pages) Texas Instruments – 8-BIT TO 9-BIT PARITY BUS TRANSCEIVER

SN74BCT29854
8-BIT TO 9-BIT PARITY BUS TRANSCEIVER
SCBS257 – SEPTEMBER 1987 – REVISED NOVEMBER 1993
recommended operating conditions
VCC
VIH
VIL
VOH
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
High-level output current
Low-level output current
Operating free-air temperature
ERR
MIN NOM MAX UNIT
4.5
5 5.5 V
2
V
0.8 V
2.4 V
– 24 mA
48 mA
0
70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2 V
VOH All inputs /outputs except ERR VCC = 4.5 V
IOH = – 15 mA
IOH = – 24 mA
2.4
2
V
IOH
ERR
VCC = 4.5 V,
VOH = 2.4 V
20 µA
VOL
VCC = 4.5 V,
IOL = 48 mA
0.35 0.5 V
II
VCC = 5.5 V,
VI = 5.5 V
IIH‡
VCC = 5.5 V,
VI = 2.7 V
0.1 mA
20 µA
Data
IIL‡
Control
VCC = 5.5 V,
VI = 0.4 V
– 0.2
mA
– 0.75
IOS§
VCC = 5.5 V,
VO = 0
–75
– 250 mA
ICCL
VCC = 5.5 V,
Outputs open
55
80 mA
ICCZ
VCC = 5.5 V,
Outputs open
† _{All typical values are at VCC = 5 V, TA = 25°C.}
‡ _{These parameters include off-state output current for I/O ports only.}
§ _{Not more than one output should be tested at a time, and the duration of the test should not exceed one second.}
30
45 mA
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
tw
Pulse duration
tsu Setup time before LE↓
th
Hold time after LE↓
LE low
CLR low
Bi and PARITY
Bi and PARITY
MIN MAX UNIT
10
ns
10
18
ns
8
ns
2–4
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