Document
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MC14538B Dual Precision Retriggerable/Resettable Monostable Multivibrator
The MC14538B is a dual, retriggerable, resettable monostable multivibrator. It may be triggered from either edge of an input pulse, and produces an accurate output pulse over a wide range of widths, the duration and accuracy of which are determined by the external timing components, CX and RX. • Unlimited Rise and Fall Time Allowed on the A Trigger Input • Pulse Width Range = 10 µs to 10 s • Latched Trigger Inputs • Separate Latched Reset Inputs • 3.0 Vdc to 18 Vdc Operational Limits • Triggerable from Positive (A Input) or Negative–Going Edge (B–Input) • Capable of Driving Two Low–power TTL Loads or One Low–power Schottky TTL Load Over the Rated Temperature Range • Pin–for–pin Compatible with MC14528B and CD4528B (CD4098) • Use the MC54/74HC4538A for Pulse Widths Less Than 10 µs with Supplies Up to 6 V. MAXIMUM RATINGS* (Voltages Referenced to VSS)
Symbol VDD Parameter DC Supply Voltage L SUFFIX CERAMIC CASE 620
P SUFFIX PLASTIC CASE 648
DW SUFFIX SOIC CASE 751G
ORDERING INFORMATION
MC14XXXBCP MC14XXXBCL *MC14XXXBDW Plastic Ceramic SOIC
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ
Value Unit V V – 0.5 to + 18.0 Vin, Vout Iin, Iout PD Input or Output Voltage (DC or Transient) – 0.5 to VDD + 0.5 ± 10 500 Input or Output Current (DC or Transient), per Pin Power Dissipation, per Package† Storage Temperature mA mW Tstg TL – 65 to + 150 260
TA = – 55° to 125°C for all packages.
BLOCK DIAGRAM
CX RX 2 Q1 5 B Q1 RESET 3 CX 15 14 Q2 B Q2 RESET 13 RX AND CX ARE EXTERNAL COMPONENTS. VDD = PIN 16 VSS = PIN 8, PIN 1, PIN 15 * Consult factory for possible “D” suffix SOIC Case 751B. 10 9 RX 6 7 VDD
1 4 A
_C _C
Lead Temperature (8–Second Soldering)
* Maximum Ratings are those values beyond which damage to the device may occur. †Temperature Derating: Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C Ceramic “L” Packages: – 12 mW/_C From 100_C To 125_C
VDD
ONE–SHOT SELECTION GUIDE
100 ns MC14528B MC14536B MC14538B MC14541B MC4538A* *LIMITED OPERATING VOLTAGE (2 – 6 V) TOTAL OUTPUT PULSE WIDTH RANGE RECOMMENDED PULSE WIDTH RANGE 1 µs 10 µs 100 µs 1 ms 10 ms 100 ms 1s 10 s 23 HR 5 MIN.
12 11
A
REV 3 1/94
©MOTOROLA Motorola, Inc. 1995 CMOS LOGIC DATA
MC14538B 1
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ELECTRICAL CHARACTERISTICS (Voltages Referenced to VSS)
Characteristic Output Voltage Vin = VDD or 0 “0” Level Symbol VOL VDD Vdc 5.0 10 15 5.0 10 15 5.0 10 15 VIH 5.0 10 15 IOH Source 5.0 5.0 10 15 IOL 5.0 10 15 15 15 — — 5.0 10 15 5.0 10 15 5.0 10 – 3.0 – 0.64 – 1.6 – 4.2 0.64 1.6 4.2 — — — — — — — — — — — — — — — — — ± 0.05 ± 0.1 — — 5.0 10 20 2.0 2.0 2.0 – 2.4 – 0.51 – 1.3 – 3.4 0.51 1.3 3.4 — — — — — — — — — — – 4.2 – 0.88 – 2.25 – 8.8 0.88 2.25 8.8 ± 0.00001 ± 0.00001 25 5.0 0.005 0.010 0.015 0.04 0.08 0.13 — — — — — — — ± 0.05 ± 0.1 — 7.5 5.0 10 20 0.20 0.45 0.70 – 1.7 – 0.36 – 0.9 – 2.4 0.36 0.9 2.4 — — — — — — — — — — — — — — — — — ± 0.5 ± 1.0 — — 150 300 600 2.0 2.0 2.0 mAdc 3.5 7.0 11 — — — 3.5 7.0 11 2.75 5.50 8.25 — — — 3.5 7.0 11 — — — mAdc Min — — — 4.95 9.95 14.95 — — — – 55_C 25_C 125_C Max 0.05 0.05 0.05 — — — 1.5 3.0 4.0 Min — — — 4.95 9.95 14.95 — — — Typ # 0 0 0 5.0 10 15 2.25 4.50 6.75 Max 0.05 0.05 0.05 — — — 1.5 3.0 4.0 Min — — — 4.95 9.95 14.95 — — — Max 0.05 0.05 0.05 — — — 1.5 3.0 4.0 Vdc Unit Vdc “1” Level Vin = 0 or VDD Input Voltage “0” Level (VO = 4.5 or 0.5 Vdc) (VO = 9.0 or 1.0 Vdc) (VO = 13.5 or 1.5 Vdc) “1” Level (VO = 0.5 or 4.5 Vdc) (VO = 1.0 or 9.0 Vdc) (VO = 1.5 or 13.5 Vdc) Output Drive Current (VOH = 2.5 Vdc) (VOH = 4.6 Vdc) (VOH = 9.5 Vdc) (VOH = 13.5 Vdc) (VOL = 0.4 Vdc) (VOL = 0.5 Vdc) (VOL = 1.5 Vdc) Input Current, Pin 2 or 14 Input Current, Other Inputs Input Capacitance, Pin 2 or 14 Input Capacitance, Other Inputs (Vin = 0) Quiescent Current (Per Package) Q = Low, Q = High Quiescent Current, Active State (Both) (Per Package) Q = High, Q = Low **Total Supply Current at an external load capacitance (CL) and at external timing network (RX, CX) VIL VOH Vdc
Vdc
Sink
Iin Iin Cin Cin IDD
µAdc µAdc pF pF µAdc
IDD
mAdc
IT
IT = (3.5 x 10–2) RXCXf + 4CXf + 1 x 10–5 CLf IT = (8.0 x 10–2) RXCXf + 9CXf + 2 x 10–5 CLf IT = (1.25 x 10–1) RXCXf + 12CXf + 3 x 10–5 CLf where: IT in µA (one monostable switching only), where: CX in µF, CL in pF, RX in k ohms, and where: f in Hz is the input frequency.
µAdc
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. ** The fo.